Diamond Infinity Necklace in 18K Yellow Gold

A Small Symbol of Forever, Traced in Fine Diamond Pavé

This is a diamond infinity necklace made in solid 18K yellow gold, with the infinity sign shaped from a thin gold contour and traced with 22 round lab diamonds in a fine pavé setting. The pendant measures 14.20 mm wide by 5.7 mm tall, sized to register clearly as an infinity symbol from a normal viewing distance without dominating the collarbone. The total diamond weight sits at 1/5 ct, distributed evenly across both loops of the symbol so the sparkle reads as one continuous line of light rather than concentrated at the center crossing. It is built for the wearer who wants a small piece of meaningful jewelry on the chain every single day, layered with other necklaces or worn alone as a quiet signature.

The Pavé Infinity Symbol and the Fine Cable Chain

The defining structural choice in this necklace is the pavé infinity symbol rather than a smooth gold cutout. Two loops of fine pavé diamonds trace the outer contour of the infinity sign, with the diamond facets catching light continuously around the curve rather than at a single fixed point. This matters specifically for an everyday-wear pendant: a flat gold infinity reads as plain at a normal viewing distance, while a fully set diamond infinity reads as visibly luxurious from across a room. The pavé sits in the middle of that range, registering as fine jewelry without crossing into formal-only territory.

The chain itself is a fine cable construction at 1.5 mm width, sized to keep the pavé pendant as the visual focal point rather than competing with it. The pendant attaches at two points along the top of the infinity symbol rather than a single jump ring, which keeps the symbol sitting flat and level against the collarbone instead of rotating to its side through the day. The clasp is a lobster style chosen for one-handed operation when putting it on alone.

Solid 18K Yellow Gold and Lab Grown Diamonds

The pendant, chain, and clasp are all produced in solid 18K yellow gold. Not plated, not vermeil, not gold-filled. 18K yellow gold has the warm, saturated tone that frames diamond pavé at its truest brightness, and at this karat the alloy stands up to skin contact and continuous wear better than 9K or 10K alternatives. The 22 stones are lab grown diamonds, matched in size and color across both loops of the infinity sign so the pavé reads as a single visually consistent line rather than a mix of bright and dim points.

• ◆ Each pavé seat is hand-cut after the infinity contour is shaped, ensuring the gold meets each diamond’s girdle cleanly with no visible gap
• ◆ Prongs are cut from the contour itself rather than soldered on, which keeps every stone locked into the pavé without weak solder points
• ◆ Stone matching is completed at the bench: 22 diamonds are color-graded and size-matched before setting, not pulled from a generic batch
• ◆ Final inspection covers prong security, pavé alignment around both loops of the infinity, chain attachment, and clasp engagement before the necklace leaves our manufacturing facility

Adjustable to Your Chain Length, Carat Weight, and Metal Choice

This necklace is built to order. The configuration shown is a starting point, not a fixed SKU. The following options can be specified before production starts.

• ◆ Chain length: 14, 16, 18 (standard), or 20 inches; extender chains available for adjustable fit
• ◆ Gold karat: 14K or 18K, with 18K offering the warmer saturated tone for yellow gold
• ◆ Gold color: yellow as shown, white, or rose
• ◆ Pendant size: smaller (12 mm wide) for a more delicate look, larger (18 mm wide) for more presence
• ◆ Total carat weight: lighter for a finer pavé line, heavier for more visible sparkle per stone
• ◆ Stone type: lab grown diamond as standard, with natural diamond available on request

For fully custom designs beyond these options, start here →