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Pt950 1.75ct No-Heat Madagascar Sapphire & 0.83ctw Natural Diamond Cluster Ring w/Report, 5.75

Currency:USD Category:Jewelry Start Price:2,000.00 USD Estimated At:8,000.00 - 10,000.00 USD
Pt950 1.75ct No-Heat Madagascar Sapphire & 0.83ctw Natural Diamond Cluster Ring w/Report, 5.75
Welcome to Gallery 63's 157th online estate auction!
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All sales carry at 28% buyer's premium.
The auction starts at 3PM ET with lot 1. Each lot will be open for 60 seconds, and each subsequent bid will reset the timer to 30 seconds.

Platinum ring having an 1.75 ct round-to-oval mixed-cut sapphire of vivid medium-blue hue, certified by GFCO (Report AAP42162) as natural, Madagascar origin, with no evidence of heat treatment. Center stone is secured in a four-prong basket and surrounded by a double-tier floral cluster of near-colourless round brilliant diamonds totalling approximately 0.83 ctw (F-G colour, VS clarity). Diamonds extend partway down the cathedral shoulders in shared-prong rows, while a pierced basket gallery maximises light return and minimises metal weight. The high-polish shank is stamped “Pt950” and presents in excellent condition with tight settings and only light wear.






Metal: Pt950 platinum


Center Stone: 1.75 ct round/oval mixed-cut sapphire, medium vivid blue; natural Madagascar origin; no heat (GFCO AAP42162)


Accent Diamonds: ≈0.83 ctw near-colourless round brilliants, natural, & nbsp; F-G colour, VS clarity


Setting: Four-prong centre; double-tier floral cluster; shared-prong shoulder rows; pierced basket gallery


Design & amp; Craftsmanship: Cathedral shoulders, high-polish comfort shank, refined hand finishing


Hallmark: “Pt950” inside shank


Ring Size: 5 & frac34; (resizable)


Condition: Excellent—secure prongs, crisp facets, minimal wear