Antique Sapphire and Old-Cut Diamond Line Brooch with Millgrain Detail, Rub-Over Set, Boxed

A refined example of antique elegance, this sapphire and diamond line brooch is beautifully composed with a sense of quiet symmetry and balance. At its centre, an oval sapphire of rich blue hue is framed within a geometric setting, flanked by two old-cut diamonds that offer a soft, understated sparkle.

The platinum-topped front enhances the crispness of the design, while delicate millgrain detailing and rub-over settings speak to the craftsmanship of the period. The gentle contrast between the cool platinum and warmer gold beneath adds depth, allowing each element to sit in harmony.

Slender and versatile, this piece lends itself effortlessly to both day and evening wea, whether worn on a lapel, collar, or as a subtle accent to a scarf. A timeless antique, offering both character and wearability.

Details

• Era: Early 20th century, later Edwardian/ early Art Deco
• Metal: Brooch tests as 15ct with platinum topped. Pin tests as 9ct
• Gemstones:
  • 1 natural Old-cut round sapphire, approx. 0.25ct (approx. 4.2 x 3.2mm)
  • 2 natural Old-cut round diamonds, approx. 0.12ct (approx. 2.4mm)
• Design: Linear bar brooch, rub-over set with millgrain detailing
• Weight: 5 grams
• Condition: Pre-owned, in good condition with light surface wear
• Marking: None present
• Packaging: Presented in the displayed box
• Measurements: Overall measurement 64mm long by 5.5mm wide (widest)

All gemstones have been professionally examined, authenticated, and recorded by GIA Graduate Gemologist.

Important Information for International Buyers:

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