Experimental Rhodium-Plated 18K White Gold Industrial Bar Stock
Bar/Ingot (Semi-finished industrial stock) · White Gold (Palladium or Nickel alloyed with a Rhodium plating)
Purity: 18K/750 (75% pure gold, 25% alloy metals)
Type
Bar/Ingot (Semi-finished industrial stock)
Purity
18K/750 (75% pure gold, 25% alloy metals)
Gold Type
White Gold (Palladium or Nickel alloyed with a Rhodium plating)
Weight
350g to 500g (Estimated based on visible volume and 18K density)
Description
A clean, minimalist 18K white gold bar featuring a precision brushed surface. This item represents a high-purity semi-finished material often used in bespoke high-end watchmaking or fine jewelry prototyping. The surface finish is designed to reduce glare and highlights the metallic grain of the rhodium plating.
Key Features
Industrial rectangular geometry, directional brushing, absence of decorative motifs.
Color & Finish
Cool silver-white; Satin/Brushed linear surface finish
Hallmarks & Stamps
None visible on the shown upper surface; common for industrial stock to be stamped on the underside or ends.
Dimensions Estimate
Length: 250mm, Width: 40mm, Thickness: 5mm
Gemstones & Inlays
None
Clasp & Closure
N/A
Chain & Links
Solid rectangular profile with squared vertical edges
Craftsmanship Details
Machine-milled for precision thickness and consistency; surface is finished with a mechanical linear abrasive belt.
Authentication Indicators
Uniformity of the brushed grain, high-quality edge milling, and consistent color depth characteristic of heavy rhodium electroplating over 18K white gold.
Origin & Maker
Likely a refinery-direct trade bar or specialized jewelry manufacturing component.
Era & Period
Contemporary (Modern industrial production)
Age Estimate
Modern (Circa 2010-Present)
Cultural Significance
Reflects the modern minimalist aesthetic in luxury material design and the shift toward industrial purity in art.
Condition Notes
Excellent/Mint condition with no visible scratches, pitting, or wear to the rhodium plating.
Value Estimate
$21,000 - $30,000 USD (Primarily intrinsic melt value based on gold content plus a small industrial fabrication premium).
Care & Maintenance
Clean with a soft microfiber cloth; avoid abrasive cleaners which will strip the rhodium layer and reveal the yellowish tint of the underlying white gold.
Similar Items
Platinum bullion bars, Sterling Silver stock, or palladium bars (differing by weight and oxidation potential).
Interesting Facts
White gold is not found in nature; it was originally developed in the early 20th century as a more affordable and workable alternative to platinum.