Aquamarine and Diamond 'star' Brooch of Sunburst Design, Centering an Emerald-cut Aquamarine, Radiating with Oval and Pe

Sunburst designs ask a great deal of a centre stone — every radiating line in the setting exists to draw the eye inward, which means the stone at the heart of the piece has to reward that attention. This aquamarine and diamond star brooch meets the brief with an emerald-cut aquamarine at its core, its clean rectangular facets offering the kind of cool, clear blue-green that has made aquamarine a favourite among gem cutters for exactly this kind of architectural design. Around it, oval, pear and round diamonds radiate outward in a sunburst arrangement, their mixed shapes giving the piece a sense of motion that a uniform diamond cut could not achieve on its own.

The diamonds are documented at a total of approximately 1.60 carats, a figure drawn directly from the piece's own paperwork, while metal composition and individual grading details for both the aquamarine and the diamonds remain on request pending further verification — we present only what has been confirmed and hold the rest open rather than filling gaps with assumption. The brooch measures approximately 3⅞ by 3⅝ inches, a genuinely substantial scale that places it firmly in statement territory rather than the realm of a delicate accent piece, and that size is part of what makes the sunburst motif work as intended — smaller execution would lose the sense of expansion the design is built around entirely.

A piece at this scale wants space to perform: the shoulder of a solid-colour coat, the centre of a wide lapel, or worn as the sole ornament against an evening gown where its full diameter can be appreciated without visual competition. Aquamarine's cool tone plays particularly well against ivory, navy and grey, echoing the same understated sophistication that made the stone a staple of both Art Deco and mid-century design across two very different design eras. The pin fitting is built for a brooch of this size and weight, distributing pressure across the back rather than relying on a single point of contact with the fabric it sits against.

Every stone offered through Legacy passes internal review before sale, and independent certification is available on request for clients seeking a third-party gemological opinion alongside our own. We conduct every transaction with discretion befitting a piece of this scale and presence. This brooch is recorded in the Legacy register as LD-BR-0055 — a substantial aquamarine centrepiece signed into our collection. We welcome enquiries for the full report or a private viewing at a time that works for you.

Specifications

• Diamond / Gem weight: 1.6ct
• Cut / Shape: Mixed
• Gemstones: Aquamarine, Emerald