SAPPHIRE AND DIAMOND NECKLACE Antique cushion-cut sapphire of 13.56 carats, round diamonds, platinum
At a glance
Shape
Cushion Cut, Round Brilliant
Carat
13.56ct
Colour
On Request
Metal
Platinum
At the heart of this necklace sits an antique cushion-cut sapphire of 13.56 carats — a stone of real stature, its cushion cut and period character lending a depth of colour that modern cutting rarely captures. Antique sapphires of this size are increasingly scarce, prized by collectors for the warmth and individuality that come only with age and origin. Round diamonds, set in platinum, surround the sapphire with cool, controlled brilliance, the platinum chosen to sharpen the contrast and let the blue read at its truest. The result is a piece of quiet authority — historically grounded, beautifully proportioned, and never ostentatious. Colour and clarity details are available on request, and certification can be provided to confirm the sapphire's weight and character. A stone of this calibre is both a singular adornment and an enduring, tangible holding. We invite you to a private viewing, where our specialists will present the full report and provenance in confidence.
Specifications
- Metal: Platinum
- Diamond / Gem weight: 13.56ct
- Cut: Cushion, Round
- Gemstones: Sapphire
- Carat Weight
- 13.56ct
- Shape
- Cushion Cut, Round Brilliant
- Color
- On Request
- Metal
- Platinum
- Certification
- GIA / IGI / HRD on request
- Treatment
- None · Natural
- Reference Number
- LD-N-GEM-0369
Brink's Global insured worldwide delivery — every Legacy acquisition ships door-to-door through Brink's secure network, fully insured, in discreet neutral packaging.
White-glove delivery — for qualifying pieces, our concierge arranges in-person delivery to your residence or private office.
3-day exclusive hold — your reservation holds the piece privately for 3 days, fully refundable.
Independently certified — to your choice of GIA, IGI or HRD on request; documents shared privately with verified acquirers.
Authentication guarantee — if any piece does not match its stated specifications, full money-back refund.
Care — a soak in warm water with mild soap restores light return; have the prongs inspected annually.
In full — nothing hidden
Most listings hide the writing. We don't — this is the work, in full.
At the heart of this necklace sits an antique cushion-cut sapphire of 13.56 carats — a stone of real stature, its cushion cut and period character lending a depth of colour that modern cutting rarely captures. Antique sapphires of this size are increasingly scarce, prized by collectors for the warmth and individuality that come only with age and origin. Round diamonds, set in platinum, surround the sapphire with cool, controlled brilliance, the platinum chosen to sharpen the contrast and let the blue read at its truest. The result is a piece of quiet authority — historically grounded, beautifully proportioned, and never ostentatious. Colour and clarity details are available on request, and certification can be provided to confirm the sapphire's weight and character. A stone of this calibre is both a singular adornment and an enduring, tangible holding. We invite you to a private viewing, where our specialists will present the full report and provenance in confidence.
Specifications
- Metal: Platinum
- Diamond / Gem weight: 13.56ct
- Cut: Cushion, Round
- Gemstones: Sapphire
Phoebe Chamberlain
- 1 EXPLORE Browse the collection
- 2 EXPRESS INTEREST Wishlist · Offer · Chat
- 3 PRIVATE GALLERY Your Private Viewing Room
- 4 RESERVE 3-day exclusive hold
- 5 DELIVERED Brinks · White-glove
Get a private alert when new arrivals match Gemstone Necklaces. Sent only when our specialists source a piece worth your attention. No newsletter.
Receive a private catalogue, curated for you
Enter your email to receive personally-selected pieces matching your interests — curated by your dedicated specialist, sent privately, never published. No newsletter, no marketing.














