18K Yellow Gold Flat Curb Link Chain with Geometric Pendant
Necklace (Chain with integrated pendant) · Yellow Gold with a rich, high-karat saturation likely alloyed with silver and copper.
Purity: 18K (750 fineness); containing 75% pure gold and 25% alloy metals.

Type
Necklace (Chain with integrated pendant)
Purity
18K (750 fineness); containing 75% pure gold and 25% alloy metals.
Gold Type
Yellow Gold with a rich, high-karat saturation likely alloyed with silver and copper.
Weight
Estimated 12 to 18 grams based on link thickness and pendant mass.
Description
A refined 18K yellow gold flat curb chain that catches light across its broad surfaces, paired with a modern square pendant.
Key Features
High-purity 18K gold, classic curb link strength, and a unique minimalist sapphire-set pendant tag.
Color & Finish
Vivid deep yellow with a high-polish mirror finish; minor surface micro-scratches from wear.
Hallmarks & Stamps
Visible '750' stamp on the oval end tag and an circular maker's mark near the clasp.
Dimensions Estimate
Chain length approximately 18-20 inches; link width estimated at 3mm to 4mm.
Gemstones & Inlays
Square geometric pendant features a central flush-set blue gemstone, possibly a sapphire or spinel.
Clasp & Closure
Lobster claw clasp, high-security mechanical spring type, matching the 18K gold color.
Chain & Links
Flat curb links (Grumetta style), machine-massembled with precision soldering and excellent flexibility.
Craftsmanship Details
Precision-cut links with high-polish bevels; the pendant demonstrates clean flush-setting technique.
Authentication Indicators
Color depth is consistent with 75% gold; '750' stamp matches high-quality lobster clasp construction.
Origin & Maker
Likely Italian or European origin; the '750' in an oval is characteristic of Italian export marks.
Era & Period
Contemporary Modern (2010s-present) featuring minimalist geometric design influences.
Age Estimate
Circa 2015-2023 based on the clasp style and contemporary laser-engraved hallmarks.
Cultural Significance
Represents modern everyday luxury; the curb chain is a global symbol of durability and status.
Condition Notes
Very Good condition; structural integrity is excellent, minor tangling visible but no permanent kinking.
Value Estimate
Value is primarily based on 18K melt value plus a 20-30% premium for craftsmanship and gemstone.
Care & Maintenance
Clean with warm soapy water and a soft brush; store flat to avoid the flat links twisting or kinking.
Similar Items
Cuban link chains (thicker), Figaro chains (alternating link lengths), or 14K alternative curb chains.
Interesting Facts
The Curb link originated from horse bridle hardware, later adapted as the most durable jewelry link style.