Custom Made Platinum 16.65 Carat Cabochon Cut Blue Star Sapphire and Diamond Ring
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Product Overview
Crafted with precision and artistry, this custom-designed platinum ring centers on a truly exceptional gemstone: a mesmerizing natural blue star sapphire. Known for their captivating optical phenomenon called asterism, genuine star sapphires display a luminous, six-rayed star that shimmers across the surface of the stone when viewed under direct light. This rare effect is caused by fine needle-like inclusions of rutile within the sapphire—an unmistakable hallmark of authenticity and natural formation. Prong-set at the heart of the design, the cabochon-cut star sapphire glows with a velvety depth and celestial light, making it a true centerpiece of distinction.
Surrounding this ethereal gem is an elaborate swirling halo of diamonds, crafted in an ornate vine-like pattern that flows seamlessly around the stone. The motif features six repeating segments, each beginning with a graceful half-moon curl set with four vintage-inspired single-cut diamonds. These are followed by a delicate swirl adorned with a round brilliant-cut diamond, which then transitions into two stacked, prong-set round brilliant-cut diamonds. The pattern is not only richly dimensional but also cleverly integrated between each sapphire to incorporate the prongs into the design, creating a radiant pinwheel-like motion that draws the eye around the central stone.
The setting is supported by a sculptural wire band that splits into three graceful strands as it approaches the gallery, cradling the swirl motif and lending strength to the design. This elegant split shank structure enhances both balance and beauty, while the undergallery is thoughtfully engineered to offer structural support and light flow beneath the stones. Both regal and romantic, this platinum star sapphire ring is a celebration of natural rarity and masterful design—an heirloom-quality piece destined to captivate for generations.
• Platinum
• (1) oval cabochon cut blue star sapphire (16.65 ctw)
• (18) round, brilliant cut diamonds (0.99 ctw)
• (24) round diamonds (0.22 ctw)
• Combined carat weight is 1.21
• Diamond colour: G-H
• Diamond clarity: VS
• Gram weight is 12.1
• Current ring size is 10
• Measures approximately 2.3 cm from knuckle to knuckle and 2 cm from finger to finger
• Independently appraised value for insurance purposes: $12,055.00 (note: may not reflect selling price)
All items in the Estate Originals Collection are estate pieces created in years gone by. Although this item is in excellent condition, it could have some signs of its age and past enjoyment. The images shown are of the exact item you will receive.





