Sapphire and Diamond Brooch | Centering a Cushion-cut Sapphire Weighing 9.63 Carats, Flanked by Triangle-shaped Sapphire

A cushion-cut sapphire weighing 9.63 carats is a substantial stone by any measure, and this brooch builds its entire composition around showcasing it properly: the center stone is flanked by triangle-shaped sapphires, the whole arrangement set within a surround of old mine-cut diamonds that frames the sapphires without ever competing with their colour.

The choice of triangle-shaped flanking stones is a particularly considered design decision — triangular cuts are comparatively rare in fine jewelry precisely because they demand exacting proportion to avoid appearing lopsided, and their presence here suggests the jeweler was working to create visual movement and directional flow leading the eye toward the central cushion sapphire rather than settling for a simpler round or baguette accent. Old mine-cut diamonds, meanwhile, are themselves a marker of considerable age and craftsmanship — a cutting style that predates the modern round brilliant, characterized by a high crown, small table, and warmer, more candlelight-friendly sparkle than contemporary cuts. Their presence as a full surround, rather than scattered accents, indicates the diamonds were cut specifically to complete this composition rather than repurposed from unrelated stock.

Metal and specific colour and clarity grading for the sapphires are not confirmed in our archive record, so we list them as on request pending full gemological review, which we would strongly recommend to any buyer given the central stone's near-ten-carat weight. A sapphire of this size and cut is the kind of stone collectors describe as increasingly difficult to source — cushion cuts at this weight, with strong enough colour to anchor a design like this one, do not come to market often, and when they do, they tend to be recognized quickly and acquired just as quickly.

As a brooch, the piece's scale and central symmetry make it a natural fit for the center of a lapel or the shoulder of a formal gown, where the flanking triangles and diamond surround can be fully appreciated rather than folded into fabric. The pin's fitting is built to support the weight of a stone this size securely; our advisors can discuss the specific mechanism and any recommendations for safe evening wear.

Independent certification is available on request, and given the sapphire's scale, we would encourage any serious buyer to review it closely before acquisition. This brooch bears the Legacy mark, our house's standing commitment to authenticity behind every substantial stone we offer.

We would welcome a private conversation about this piece — its sapphire, its construction, and how it might join your collection. Please reach out whenever convenient.

Specifications

• Diamond / Gem weight: 9.63ct
• Cut / Shape: Cushion Cut
• Gemstones: Sapphire