Natural Blue Star Sapphire 14.73ctw & Diamond 0.61ctw Platinum Ring, Size 7
Lot #442
Current Bid
$1,000
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Description
Size: 7 Gemstones: Natural Blue Star Sapphire 14.73ctw & Diamond 0.61ctw SI Clarity, G-H Color Metal: platinum pt900 weight: 14.36 grams Notes from the Curator Star sapphires display asterism—a shimmering six-rayed pattern caused by intersecting needle-like inclusions of rutile aligned with the crystal's internal structure—and this high-domed oval cabochon, weighing 14.73 carats, has been cut expressly to center the star at the apex of the dome. Corundum's trigonal crystal system favors three-directional rutile growth, hence the prevalence of six-ray stars in these stones, though rare specimens exhibit twelve-rayed stars when a second network of needles intersects the first. Cabochon-cut star sapphires surged in popularity during the 1930s and 1940s; Douglas Fairbanks Sr. gave Mary Pickford the legendary Star of Bombay, set in a platinum ring by Trabert & Hoeffer. The present ring echoes that mid-century aesthetic: platinum and diamonds were the materials of choice for discerning collectors, and a halo of round brilliants and baguettes frames the star with restrained Art Deco geometry, allowing the sapphire's optical phenomenon to command attention.
Bidding Details
- Starting Bid: $1,000
- Buyer's Premium: 20%
- Auction End Date: August 31, 2026
Bid Increment Schedule
The minimum amount your bid must exceed the current price, based on the current bid level.
| Current Price | Minimum Increment |
|---|---|
| $0 – $24.99 | $1 |
| $25 – $74.99 | $2 |
| $75 – $149.99 | $5 |
| $150 – $499.99 | $10 |
| $500 – $999.99 | $25 |
| $1,000 – $4,999.99 | $50 |
| $5,000 – $9,999.99 | $100 |
| $10,000 – $24,999.99 | $250 |
| $25,000 – $49,999.99 | $500 |
| $50,000 – $99,999.99 | $1,000 |
| $100,000 – $499,999.99 | $2,000 |
| $500,000+ | $5,000 |
