The Gold Color Chart Daumet could produce with its innovative gold alloys

Pure Color. Optimized Mass.

Patented gold-tungsten alloys. Certified 18K and 22K. The color and luster of solid gold - 70 to 90% less material. Fine White™, High-Density 22K, and any bespoke composition from 18K to 24K.

18K WhiteGold Ring
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Why Gold-Tungsten Alloys?
Pure gold is soft, heavy, and expensive. Traditional jewelry alloys compromise color, durability, or biocompatibility - never all three at once. Daumet's gold-tungsten matrix maintains 18K and 22K color and luster, enhances hardness 2 to 10 times over pure gold, reduces material consumption by 70 to 90%, and is hypoallergenic - no nickel, no cadmium. Applied at atomic level via PVD - impossible with electroplating or traditional alloying.
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Two Certified Alloys
18K FINE WHITE™
The first certified 18K white gold without rhodium. Naturally white, permanently brilliant, hypoallergenic by design.
HIGH-DENSITY 22K
Certified 22K gold finish (916/1000) with the "massiveness" and radiance expected in Indian, Middle Eastern, and Asian traditional jewelry—enhanced durability for daily wear.

Full technical documentation available on request.
22K Gold/Tungsten Alloy for a pendant
21K Champagne Gold coating on Ring by Sandrine Tessier
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Bespoke Alloys: Your Signature Gold
Beyond Fine White™ and 22K High-Density, Daumet engineers custom gold-tungsten alloys in any color and karat—from subtle white variations to rare champagne tones.

Create a signature gold hue no competitor can replicate.

Implement your patented and exclusive composition and own your material differentiation.

This ring was treated with a dedicated 21K Champagne Gold - developed for a client with nickel and rhodium sensitivity.

Full documentation available on request.
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Process: PVD Gold Vapor Technology
Physical Vapor Deposition (PVD) applies gold at atomic level—creating denser thin film than electroplating.
Atomic Adhesion
Gold atoms bond directly to substrate surface. Result: no peeling, no delamination, no cracking even under flex.
Controlled Composition
Precise gold-tungsten ratio ensures certified 18K/22K gold content while enhancing mechanical properties.
Thickness Control
Deposition from 0.5 to 5µm depending on application— thinner than electroplating (10-20µm) with superior performance.

THE WHITEST 18K. THE DENSEST 22K. YOURS.

Request our technical deck - performance and cost comparison of our 18K and 22K alloys against solid gold and electroplating.