53.06 CT. Fancy Shape Sapphire and Oval Cut Diamond Tennis Necklace in 18K White Gold and Yellow Gold

This 53.06 carat necklace, set with 62 stones, is a rare and exceptional piece in fine jewelry. Combining fancy-shaped sapphires with oval-cut diamonds in a two-tone 18K white and yellow gold setting, it showcases meticulous stone matching and expert craftsmanship. Oval diamonds provide a generous visual presence and flow naturally along the neckline, while the fancy-shaped sapphires enhance color and movement, creating a necklace with life and rhythm.

The sapphires are VS clarity with F–G equivalent tonal quality, and the diamonds are VS clarity, F–G color, ensuring both beauty and intrinsic value. The two-metal setting highlights contrast: white gold for the diamonds maintains cool precision, while yellow gold for the sapphires amplifies their rich blue hue. This piece blends exceptional aesthetics with rare sourcing and enduring quality.

Stone & material specifications

The case for sapphire at this scale

Why is sapphire above other colored gemstones

Sapphire is the benchmark colored gemstone in fine jewelry for two reasons: hardness and color. At 9 on the Mohs scale, sapphires are second only to diamonds in scratch resistance - meaning a 53-carat sapphire and diamond necklace can be worn without the anxiety that accompanies softer gemstones like emerald (7.5–8) or tanzanite (6–7). At 53 carats in a necklace, durability matters enormously. The second reason is color: well-saturated blue sapphires have no equivalent in the gemstone world. No other stone produces the same depth of blue - cool, velvety, and luminous - that a fine sapphire achieves.

Fancy shapes vs. round

Fancy-shaped sapphires - cut in oval, cushion, pear, or other non-round configurations - are cut specifically to maximize color face-up in the individual stone. Unlike round cuts, which follow a standardized faceting template, fancy shapes are tailored to each stone's natural color distribution and crystal structure. This means every fancy-shaped sapphire in this necklace has been cut to show its color at its best, rather than to conform to a standard template. The result is a richer, more complex color story than a uniform round-cut sapphire necklace could deliver.

Styling guidance

• This necklace is worn alone - at 53 carats and 62 stones, it is the complete look

• Allow it to rest against a bare neckline or low v-neck for maximum color and stone visibility

• For earrings: sapphire studs or small diamond hoops only - nothing that competes with the necklace's scale

• Ideal for formal occasions, galas, significant dinners, and any setting where extraordinary jewelry is appropriate

• The blue sapphire and white diamond combination works across all complexions and against all evening color palettes

Private viewing

A necklace of this significance deserves to be seen in person. We offer private viewings at our San Francisco showroom by appointment, with our full team available to discuss the stone selection, setting details, and the story behind the piece. Online consultations with high-resolution photography and video are available for clients outside the Bay Area. Contact us to schedule your viewing - and to understand what 53 carats of sapphire and diamond looks like at the neckline.