Aluminum Case for Jewelry: Mu-metal, GIA, ISO 764, COSC

Aluminum Case for Jewelry and Horology (Watchmaking) Equipment Transport: Gemstone Protection, Precision Tool Stability, and Anti-Tarnish Microclimate Engineering

Jewelry and horology (watchmaking) equipment represents one of the most precision-sensitive and high-value-per-gram categories in any industry. A gemological refractometer (Eickermann/Gem Refractometer; $800-$3,500) that arrives with a displaced refractive index prism (±0.001 RI tolerance) can produce false gemstone identification, potentially resulting in a $50,000 misclassification of a ruby versus a garnet. A watchmaker’s precision lathe (Boley/Leinen; $5,000-$20,000) with spindle bearing damage from transport vibration exceeding 2 Grms develops runout beyond 0.002mm, rendering it unusable for pivoting and polishing watch components to Swiss chronometer tolerance. A diamond grading set (GIA master diamonds, D-Z color scale; $10,000-$50,000) exposed to temperature shock can develop micro-fissures in the comparison stones, invalidating the laboratory’s color grading reference standard under ISO 17025. A mechanical watch movement (ETA 2824-2/Rolex 3135/Patek Philippe 26-330; $200-$50,000 per movement) subjected to magnetic flux above 4,800 A/m (ISO 764 anti-magnetic standard) can exhibit amplitude loss exceeding 60 seconds/day, failing chronometer certification under ISO 3159. A diamond polishing/sawing machine (Meyer & Burger/Sarlacc; $8,000-$30,000) with misaligned spindle from impact can destroy a $100,000 rough diamond through incorrect facet geometry. This comprehensive engineering guide examines the jewelry and horology transport environment, gemological instrument protection, watchmaker’s tool transport, gemstone and diamond protection, movement and component transport, anti-magnetic and anti-tarnish case engineering, regulatory standards (ISO 17025, ISO 764, ISO 3159, ISO 11426, GIA, CIBJO, Federation of the Swiss Watch Industry), and OEM/ODM solutions for the jewelry and horology industry.

Jewelry and Horology Transport Environment Challenges

The jewelry and horology transport environment combines extreme precision tolerance (sub-micron for watch components, sub-0.001 RI for gemology), anti-magnetic protection (ISO 764), anti-tarnish microclimate (sulfide-free, chloride-free atmosphere for silver and copper alloys), thermal stability (20C +/-2C for gemological instruments), and security/tamper-evidence requirements that exceed typical industrial case engineering because the consequences include financial loss, legal liability, and brand reputation damage:

Precision, Magnetic, and Tarnish Protection Requirements

Case Materials for Jewelry and Horology Environment

The jewelry and horology environment demands materials that prevent magnetic interference, chemical tarnish, dust contamination, and thermal instability. The case exterior is 6061-T6 aluminum (anodized per MIL-A-8625 Type III, 25 um hardcoat, resistant to polishing compounds: diamond paste, cerium oxide, aluminum oxide; resistant to solvents: isopropyl alcohol, acetone, heptane; resistant to ultrasonic cleaning fluids). The gasket is EPDM (70 Shore A, compression set <25% per ASTM D395, IP65/IP66 rated, operating temperature -40C to +120C, non-outgassing per ASTM E595 TML 80,000 at 0.1T field strength, 0.1mm thick) is applied as a continuous wrap on interior surfaces of movement compartments, providing >40 dB DC magnetic field attenuation (ISO 764 compliant). For anti-tarnish protection, the case interior includes an activated carbon filter pad (50g coconut-shell activated carbon, BET surface area >1000 m2/g, adsorbs H2S and SO2 to <0.01 ppm) and anti-tarnish strips (3M Anti-Tarnish Paper, 1,2,4-triazole vapor-phase inhibitor, protects silver, copper, brass, bronze from sulfide tarnish for 12 months). Fasteners are 316 stainless steel (non-magnetic, A4-70 grade, nylon patch lock, critical for horology where magnetic fasteners would compromise the Mu-metal shield). The case features a pressure equalization valve (Gore-Tex membrane, IP66, prevents vacuum seal and condensation in precision instrument compartments). For high-value gemstone transport, the case includes a dual-lock security system (keyed cylinder lock + 3-digit combination dial, recessed padlock loops accepting 8mm shackle, security cable anchor point for tethers).

Gemological Instrument Transport

Gemological Testing Instrument Transport

Gemological instrument case engineering: The gemological refractometer is the most transport-sensitive gemological instrument. The refractive index prism (lead glass or spinel, n=1.81, flatness lambda/4 at 589nm) must maintain optical contact with the hemicylinder (glass, n=1.81) with contact fluid (methylene iodide, n=1.74, or sulfur-saturated methylene iodide, n=1.81) in place. A 0.001 RI shift from prism displacement can change a ruby (n=1.762-1.770) reading to overlap with red spinel (n=1.708-1.736) or pyrope garnet (n=1.714-1.742), causing misidentification. The refractometer case provides: (1) 50mm closed-cell PE foam on all surfaces; (2) refractometer cradle (custom-cut EVA, 5mm contact surface, prism end elevated 10 degrees preventing RI fluid migration, prism cover cap fitted over the hemicylinder); (3) RI fluid compartment (sealed glass bottle, 10ml, PTFE-lined cap, spill containment tray, 15mm foam); (4) illuminator/flashlight compartment (LED 589nm monochromatic, 15mm foam, battery compartment separate); (5) eyepiece/ocular compartment (10x loupe, individual foam slot, lens caps); (6) polarizer attachment compartment (15mm foam, polarizer disk protected); (7) calibration reference stone compartment (known RI standard, individual sealed HDPE); (8) ShockWatch 10g label; (9) IP65 gasket seal; (10) humidity indicator card; (11) desiccant holder (50g silica gel). For the gemological microscope (GIA Gemolite 10x-60x, Zeiss Stemi, Motic GM): 50mm foam, objective lens caps (4 objectives: 10x, 20x, 40x, 60x), zoom mechanism lock (prevents zoom drift from vibration), illumination arm cradle (fiber optic dual gooseneck, coil radius >100mm), stage lock (mechanical stage prevented from lateral movement), eyepiece covers (10x and 25x widefield, rubber cups), darkfield immersible light compartment. For UV-Vis spectrometer transport (GemmoSpec/GemPyroscan): wire-rope isolators (EN/K3, 1.5 Hz natural frequency, 60% isolation at 10 Hz), 50mm foam, diffraction grating lock (1200 lines/mm, ±0.1nm wavelength accuracy), deuterium/tungsten light source compartment (shock-isolated), fiber optic cable channel (minimum bend radius 100mm), detector compartment (PMT or CCD, ESD-safe), touchscreen protector (0.3mm tempered glass). For DiamondSure/DiamondView (HRD Antwerp, synthetic diamond detection): wire-rope isolators, 50mm foam, laser compartment (Class 3B, key-locked, interlock cap), optical bench lock (preventing bench decoupling from base), camera compartment (CCD with shutter lock), power supply compartment (medical-grade isolation, IEC C13/C14 connector caps).

GIA Diamond Grading Set and Color Reference Transport

Master diamond set case engineering: The GIA master diamond set is the laboratory’s color grading reference standard under ISO 17025 section 6.4 (equipment calibration). A master stone that develops a thermal-shock micro-fissure from temperature change exceeding 5C/minute changes its light return and face-up color appearance, potentially shifting the D-Z color boundary by one grade. A 0.30ct D-color master stone ($5,000-$10,000 replacement value) with a chip on the girdle from contact with another stone during transport requires laboratory recertification and replacement. The case provides: (1) 25mm PU foam insulation (maintains interior temperature change rate <2C/hour when exterior changes 10C/hour); (2) individual HDPE vials for each master stone (5-7 stones, each vial: 15mm diameter, 30mm height, snap-cap with foam insert, vial interior padded with lint-free cotton); (3) vial rack (CNC-machined HDPE, individual slots with 5mm foam between, prevents vial contact); (4) UV-blocking interior (99% UV-A/UV-B block, black anodized aluminum interior, prevents fluorescence excitation of comparison stones); (5) temperature indicator (circular dial, 0-50C, +/-1C, mounted on interior lid); (6) tamper-evident seal system (4-point serialized evidence tape, tamper-evident tape over closure); (7) dual-lock security (keyed cylinder + 3-digit combination); (8) ShockWatch 10g label; (9) IP65 gasket seal; (10) desiccant holder (50g silica gel, maintains 30-40% RH); (11) chain of custody form pocket (waterproof sleeve, external access); (12) security cable anchor point (tether to fixed point during field grading). For CZ master sets (D-Z, 10 stones, 6mm round): individual slots in anti-tarnish-lined tray (3M Anti-Tarnish paper base), UV-blocking lid (99% UV block prevents CZ color shift from prolonged UV exposure), 15mm foam between slots, 10mm foam tray base.

Watchmaker’s Precision Tool Transport

Watchmaker’s Lathe and Machine Tool Transport

Watchmaker’s lathe case engineering: The watchmaker’s lathe (Boley 17L, Leinen) is the most transport-sensitive machine tool in horology. The spindle runs on precision ball bearings (ABEC 7, 5-20mm bore, radial runout <0.002mm at the collet nose). Transport vibration exceeding 2 Grms can cause bearing race brinelling (false brinelling from oscillatory motion without rotation), creating permanent raceway indentations that increase spindle runout beyond 0.002mm, making the lathe unusable for pivot polishing to Swiss finish standards. The bed (hardened steel, ground, flatness 0.005mm/100mm) can warp from asymmetric thermal exposure or impact. The case provides: (1) wire-rope isolators (EN/K3, 316 stainless steel rope, 1.5 Hz natural frequency, 60-80% vibration isolation at 10-200 Hz, 4-point mounting); (2) 50mm closed-cell PE foam on all surfaces; (3) spindle lock (aluminum clamp, prevents spindle rotation during transport, protects bearings from false brinelling); (4) bed cradle (custom-cut EVA, supports bed at 3 points: headstock end, middle, tailstock end, 5mm contact surface, prevents bed flexure); (5) collet set compartment (8-20 collets, individual foam slots, 1.5-6mm, with collet key); (6) tailstock compartment (locked in position, ram retracted, center protected); (7) cross-slide lock (prevents slide movement); (8) tool rest/post compartment (15mm foam); (9) accessory drawer (graver, graver handle, faceplate, driver, center, wire; 15mm foam); (10) ShockWatch 10g label; (11) IP65 gasket seal; (12) humidity indicator; (13) desiccant holder (50g silica gel); (14) anti-tarnish strip (3M, protects steel accessories). For the polishing head (Boley/Leinen BGV): 50mm foam, arbor lock (prevents arbor rotation, protects bearings), grinding wheel/pulley compartment (individual, 15mm foam, wheel protected from chipping), motor cradle (shock-isolated, 25mm foam), foot control/variator compartment (15mm foam). For ultrasonic cleaner (Elma S30/S60/H, Branson CPX): 25mm foam, tank drain plug secured (prevents fluid leak), transducer protected (piezoelectric, impact-sensitive), basket compartment, lid locked open (prevents lid damage), heater thermostat locked at OFF position.

Watchmaker’s Hand Tool and Measurement Transport

Watchmaker’s hand tool case engineering: Dumont tweezers (Type 2, 3, 4, 5, 7; Swiss-made, anti-magnetic Dumoxel alloy or Dumastel, tip alignment 0.01mm) are the watchmaker’s primary instruments. A tweezer tip that contacts another tool during transport can bend 0.05mm, making it impossible to handle a 0.10mm watch screw or pivot a 0.07mm balance staff. The Dumoxel alloy is anti-magnetic (permeability <1.01) but can become magnetized by transport in a magnetic field above 1,000 A/m. The case provides: (1) individual vertical foam slots for each tweezer (10mm foam, slot depth 80mm, tip protector cap on each tweezer); (2) screwdriver set compartment (Bergeron 8640, Horotec; 10-20 screwdrivers, individual vertical slots, blade tip protector caps, size labels, 15mm foam); (3) loupe compartment (Bausch & Lomb Hastings triplet 10x/20x/30x; individual leather pouches, 10mm foam, prevents lens contact and color-filter degradation); (4) dial gauge/micrometer compartment (Mahr Micromar 40E, Mitutoyo 293-340; 25mm foam, spindle protector cap, anvil cap, calibration certificate pocket, anti-magnetic); (5) timing machine compartment (Witschi New Tech Champion 2.0: 50mm foam, acoustic microphone cradle with 5mm EVA contact, inductive sensor cradle, optical sensor cradle, touchscreen protector 0.3mm tempered glass, thermal printer paper roll compartment, power supply compartment); (6) water resistance tester compartment (Witschi Proofmaster: 50mm foam, pressure vessel cradle with O-ring protector, gauge face protector, pump handle locked, fitting set tray with individual slots for watch case fittings, condensation sensor compartment); (7) anti-magnetic compartment lining (Mu-metal 0.05mm, wraps the entire tool compartment, <4,800 A/m ISO 764 compliant); (8) ShockWatch 5g label for precision tools; (9) IP65 gasket seal; (10) humidity indicator; (11) desiccant holder (50g silica gel); (12) anti-tarnish strip (3M, protects steel tool surfaces); (13) security lock (keyed cylinder).

Gemstone and Diamond Transport

Rough and Polished Diamond Transport

Gemstone transport case engineering: Diamond and gemstone transport requires protection at the sub-gram level. A polished diamond (0.30ct, 4.3mm diameter, 2.5mm depth) with a chip on the girdle from contact with another stone or hard surface loses 20-50% of its value, as the girdle chip requires re-cutting (weight loss) or becomes a clarity characteristic (IF to SI). Emerald (Type III clarity, heavily included, fracture-filled with cedar oil or Opticon) is extremely sensitive to thermal shock; temperature change exceeding 5C/minute can extend existing fractures or create new ones, and fracture-filling oil can expand/contract, causing fill material extrusion. Pearls (Mohs 2.5-4.5, aragonite platelets) are scratched by contact with harder stones or metal, and are damaged by acids (vinegar, citrus), alkalis (ammonia), and humidity extremes (70% causes organic degradation). The case provides: (1) 25mm closed-cell PE foam on all surfaces; (2) individual stone paper compartments (diamond folding paper, white, acid-free, non-abrasive, each compartment holds 1-5 stones in individual papers); (3) HDPE vial rack (individual vials: 10mm diameter, 25mm height, cotton-padded interior, snap-cap with foam insert, vial rack CNC-machined HDPE with 5mm foam between slots); (4) UV-opaque compartment (99% UV block for color-change stones: alexandrite, color-change sapphire, color-change garnet; prevents UV-induced temporary color shift that affects grading); (5) thermal insulation (25mm PU foam, maintains <2C/hour interior rate); (6) temperature indicator (0-50C, +/-1C); (7) humidity control (50g silica gel desiccant + humidity indicator 30-50% RH; for pearls, maintains 40-60% RH with separate humidifier pad); (8) anti-tarnish system (3M Anti-Tarnish strips for silver/copper jewelry settings; activated carbon pad for H2S/SO2 adsorption); (9) tamper-evident seal system (4-point serialized evidence tape, closure seal); (10) dual-lock security (keyed cylinder + 3-digit combination, recessed padlock loops 8mm); (11) security cable anchor point; (12) ShockWatch 15g label; (13) IP65 gasket seal; (14) chain of custody form pocket (waterproof, external access). For pearl strand transport: silk-lined tray (natural silk, non-abrasive, acid-free), individual pearl compartments with velvet dividers (prevents pearl-to-pearl contact), anti-tarnish paper (protects any metal clasp), separate humidifier pad (50% RH buffer, maintains pearl hydration), 25mm foam, soft-close lid (prevents impact on pearls).

Watch Movement and Component Transport

Mechanical Movement Transport

Movement transport case engineering: The mechanical watch movement is the most precision-sensitive object in the jewelry/horology transport environment. The balance wheel (glucydur, 8-10mm diameter, 0.5-1.0g) oscillates at 4-5 Hz (28,800-36,000 vph), supported on pivots (0.07-0.12mm diameter) running in synthetic ruby jewels (hole jewel + cap jewel, oleophobic, friction-fit). Transport shock exceeding 5g can fracture a pivot jewel (synthetic ruby, Mohs 9, but brittle in thin sections <0.3mm). The hairspring (flat or Breguet overcoil, Nivarox alloy, 0.02-0.03mm wire, 12-15 turns) can deform from lateral impact, changing the active length and shifting the timing rate by 10-60 seconds/day. The Nivarox hairspring alloy is paramagnetic (permeability ~1.01) but the complete movement must meet ISO 764 (<4,800 A/m, residual amplitude loss 80,000 at 0.1T, continuous wrap on all 6 interior surfaces of movement compartment, overlapping seams >10mm, providing >40 dB DC magnetic field attenuation); (2) wire-rope isolators (EN/K3, 1.5 Hz natural frequency, 4-point mounting, 60-80% isolation at 10-200 Hz, prevents false brinelling of pivot jewels from oscillatory bearing contact); (3) 50mm closed-cell PE foam on all surfaces; (4) movement holder cradle (Bergeron 4040/4041 movement holder, 5mm EVA contact, movement secured in holder, holder cradled in foam); (5) balance assembly capsule (Mu-metal, sealed, 50mm foam, pivot protector caps on both jewels, hairspring shield ring prevents lateral contact, ESD-safe conductive foam for any quartz balance); (6) mainspring barrel compartment (individual HDPE, 15mm foam, arbor lock prevents spring unwinding); (7) watch hand compartment (individual foam slots, 10mm foam, hand protectors prevent bending, anti-static foam for luminous hands); (8) COSC/timing certificate pocket (waterproof sleeve); (9) demagnetizer slot (external, allows movement demagnetization through case wall without opening compartment); (10) ShockWatch 5g label; (11) IP65 gasket seal; (12) humidity indicator; (13) desiccant holder (50g silica gel); (14) anti-tarnish strip (protects steel components: screws, mainspring, barrel arbor); (15) tamper-evident seal system (4-point serialized); (16) dual-lock security. For high-end complications (tourbillon: 72-component cage rotating at 0.25-1 Hz; perpetual calendar: 300+ components; minute repeater: gong and hammer assembly): additional wire-rope isolators (6-point), complication-specific locks (tourbillon cage lock prevents rotation, repeater hammer lock prevents striking), 80mm foam for tourbillon movements, Mu-metal double-shield (0.2mm total).

Anti-Magnetic and Anti-Tarnish Case Engineering

Magnetic Shielding System

The anti-magnetic system for horology transport is engineered to ISO 764 (watchcase magnetic resistance, 4,800 A/m DC, residual effect 80,000 at 0.1T, saturation flux density 0.65T). The shield is applied as a continuous wrap on all 6 interior surfaces of movement compartments, with overlapping seams (minimum overlap 10mm, folded and pressed, not spot-welded to avoid stress-induced permeability degradation). (2) Shield effectiveness: at 4,800 A/m external DC field (ISO 764 test level), the Mu-metal shield provides 40-45 dB attenuation, reducing interior field to 10,000 A/m) or from mechanical shock (magnetomechanical effect). The case includes a demagnetizer slot (external access, 30mm diameter, allows passage of a demagnetizer coil over the movement compartment without opening the case, enabling field demagnetization while maintaining ISO 764 compliance). (4) Shield integrity verification: the case is tested with a Helmholtz coil system generating 4,800 A/m DC, with a Hall effect probe (Lakeshore, +/-0.1 A/m) inside the movement compartment verifying interior field <48 A/m. (5) Non-magnetic fasteners: all fasteners in the movement compartment are 316 stainless steel (non-magnetic, permeability <1.01, A4-70, nylon patch lock); any magnetic fastener would create a flux path bypassing the Mu-metal shield.

Anti-Tarnish Microclimate System

The anti-tarnish system protects silver, copper, brass, bronze, and steel components from atmospheric corrosion during transport and storage. The system consists of: (1) Activated carbon filter pad (50g coconut-shell activated carbon, BET surface area >1000 m2/g, pore volume 0.5-0.8 cm3/g, adsorbs H2S to <0.01 ppm, SO2 to <0.01 ppm, Cl2 to <0.01 ppm, VOCs to <0.1 ppm). The filter pad is mounted in a flow-through position near the gasket seam (where gaseous ingress occurs). (2) Vapor-phase corrosion inhibitor (VCI) strips (3M Anti-Tarnish Paper, 1,2,4-triazole-3-thiol, protects silver and copper alloys by forming a monomolecular adsorption layer on metal surfaces, effective for 12 months in sealed environment, non-toxic, non-staining, removable with isopropyl alcohol). (3) Desiccant (100g silica gel, Type A, 2-5mm beads, adsorbs moisture to maintain 30-50% RH, color indicator changes from blue to pink at 50% RH, regenerable at 120C). (4) Humidity indicator card (circular, 30-50% RH, 5-point, +/-2% accuracy, mounted on interior lid for visual inspection). (5) Sealed interior: EPDM gasket (IP65/IP66) prevents external moisture and gas ingress; Gore-Tex pressure equalization valve allows pressure equalization without moisture ingress (water vapor transmission rate <15 g/m2/day). The anti-tarnish microclimate is verified through salt spray testing (ASTM B117, 48-hour exposure, interior components show no corrosion) and H2S exposure testing (0.5 ppm H2S for 48 hours, silver test coupon shows no tarnish).

Regulatory Standards and Compliance

OEM/ODM Solutions for Jewelry and Horology Industry

ROBUST CASE provides OEM/ODM aluminum case solutions for the jewelry and horology industry through our ISO 9001 certified manufacturing facility in Changzhou, China. Our jewelry and horology case engineering addresses the industry’s most demanding requirements:

• Gemological laboratories: Refractometer transport cases with prism locks and RI fluid compartments, spectroscope and polariscope cases, GIA master diamond set transport cases with thermal insulation and UV protection, UV-Vis spectrometer cases with wire-rope isolators, DiamondSure/DiamondView transport cases
• Watch manufacturers (Swiss/Japanese/Chinese): Movement transport cases with ISO 764 Mu-metal magnetic shields and wire-rope isolators, balance assembly capsules with pivot protectors, mainspring barrel cases, watch hand transport cases, COSC certificate transport pockets
• Jewelry manufacturers: Diamond polishing/sawing machine transport cases, gemstone cutting station cases, ultrasonic cleaner cases, bench tool transport cases, finished jewelry transport cases with anti-tarnish systems and velvet-lined compartments
• Watch repair/after-sales service: Watchmaker’s lathe cases with spindle locks and bed cradles, timing machine cases (Witschi/BenchScope), water resistance tester cases, hand tool sets (Dumont tweezers, Bergeron screwdrivers, loupes, dial gauges), staking set cases
• Gemstone dealers/traders: Rough diamond transport cases with thermal insulation and tamper-evident seals, polished diamond transport cases with individual stone paper compartments, colored stone cases with UV-opaque compartments for color-change gems, pearl strand cases with humidity-controlled silk-lined trays
• Auction houses/appraisers: High-value jewelry transport cases with dual-lock security and tamper-evident seals, appraisal instrument cases (refractometer, spectroscope, microscope), chain of custody documentation systems
• Jewelry retail chains: Store-to-store transfer cases with security cable anchors, inventory transport cases with serialized compartment labels, cleaning/maintenance equipment cases

Our OEM/ODM capabilities include custom aluminum extrusion profiles (6061-T6, 6063-T5), Mu-metal magnetic shielding integration (ISO 764 compliant, >40 dB DC attenuation, demagnetizer slot provision), anti-tarnish microclimate systems (activated carbon + VCI strips + desiccant + humidity indicator), CNC-machined interior foam (Ethafoam 220, ESD-safe conductive foam, medical-grade HDPE, silk-lined trays for pearls), wire-rope vibration isolation (EN/K3, 1.5 Hz natural frequency), dual-lock security systems (keyed cylinder + combination, recessed padlock loops, security cable anchors), tamper-evident seal integration (4-point serialized, chain of custody documentation pockets), and thermal insulation (25mm PU foam, temperature indicators, cold pack integration). Every jewelry and horology case is validated through ASTM D4169 DC-13 transport qualification testing, IEC 60529 IP65/IP66 ingress protection testing, IEC 60068-2-64 random vibration testing, IEC 60068-2-27 shock testing, ISTA 3A drop testing, ISO 764 magnetic resistance testing, and ASTM B117 salt spray testing.

Our ISO 9001 certified facility in Changzhou engineers jewelry and horology cases validated through ASTM D4169 transport qualification (DC-13 distribution cycle), IEC 60529 ingress protection testing (IP65/IP66), IEC 60068-2-64 random vibration testing, IEC 60068-2-27 shock testing, ISTA 3A drop testing, ISO 764 magnetic resistance (4,800 A/m DC), and ASTM B117 salt spray testing. For custom jewelry and horology case specifications, visit our OEM/ODM Customization page or review our certifications and standards.

Contact Us for Jewelry and Horology Aluminum Cases

From gemological refractometer cases with prism locks and RI fluid compartments, to GIA master diamond set cases with thermal insulation and UV protection, to watchmaker’s lathe cases with spindle locks and wire-rope isolators, to movement transport cases with ISO 764 Mu-metal magnetic shields and balance assembly capsules with pivot protectors, to gemstone transport cases with individual stone paper compartments and anti-tarnish systems, to pearl strand cases with humidity-controlled silk-lined trays, every jewelry and horology case we engineer is validated through ASTM D4169 transport qualification, IEC 60529 IP65/IP66 ingress protection, IEC 60068-2-64 vibration testing, ISO 764 magnetic resistance, and ISTA 3A drop testing. Our expertise in gemological instrument transport (Eickermann/GIA/Zeiss), master diamond set protection (GIA D-Z, thermal insulation, UV blocking), watchmaker’s lathe transport (Boley/Leinen, spindle bearing protection), Dumumont tweezer and Bergeron screwdriver sets, Witschi timing machine and water resistance tester transport, movement transport (ETA/Rolex/Patek Philippe, Mu-metal shielding, wire-rope isolation), and jewelry/horology industry standards (ISO 764, ISO 3159, ISO 17025, GIA, CIBJO, IEC 61340-5-1, ASTM D4169, ISTA 3A, ASTM B117) ensures that your gemological instruments, precision tools, gemstones, and watch movements arrive calibrated, untarnished, non-magnetized, and ready for use.

For custom jewelry and horology case specifications:

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Manufactured in Changzhou, China under ISO 9001 quality management. Compatible with ISO 764 (watch magnetic resistance, 4,800 A/m), ISO 3159 (chronometer testing), ISO 17025 (gemological laboratory competence), ISO 11426 (precious metal fineness), GIA grading standards, CIBJO Blue Book, ISO 14644 (cleanroom classification), IEC 61340-5-1 (ESD protection), IEC 60529 (IP65/IP66), IEC 60068-2-64/27 (vibration/shock), ASTM D4169 (DC-13), ISTA 3A, ASTM E595 (outgassing), and ASTM B117 (salt spray testing).

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