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15.904 Ct Natural Unheated Ceylon Blue Sapphire — Antique Cushion Cut

Weighing a monumental 15.904 carats, this natural blue sapphire from Ceylon (Sri Lanka) features an exquisite antique cushion cut (brilliant/step faceting) measuring 14.51 x 13.84 x 8.44 mm. Completely unheated and untouched by thermal treatment, the stone reflects a rich, regal blue palette with incredible optical depth and classic romantic proportions.

Unheated blue sapphires of this magnitude and transparency are extraordinary collector-grade rarities. Ceylon is historically renowned for yielding sapphires with silky internal luster and lively royal blue reflections. The antique cushion cut gives it a distinctive, soft-cornered vintage charm that gracefully catches light from all angles.

Sapphire ranks 9 on the Mohs scale, second only to diamond, ensuring legendary durability for high-end heirloom jewelry.

• Type: Natural Sapphire

• Origin: Ceylon (Sri Lanka)

• Treatment: No indications of heating (Unheated)

• Weight: 15.904 Cts.

• Dimensions: 14.51 x 13.84 x 8.44 mm

• Color: Blue

• Shape/Cut: Antique Cushion (Brilliant/Step Cut)


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Weighing a monumental 15.904 carats, this natural blue sapphire from Ceylon (Sri Lanka) features an exquisite antique cushion cut (brilliant/step faceting) measuring 14.51 x 13.84 x 8.44 mm. Completely unheated and untouched by thermal treatment, the stone reflects a rich, regal blue palette with incredible optical depth and classic romantic proportions.

Unheated blue sapphires of this magnitude and transparency are extraordinary collector-grade rarities. Ceylon is historically renowned for yielding sapphires with silky internal luster and lively royal blue reflections. The antique cushion cut gives it a distinctive, soft-cornered vintage charm that gracefully catches light from all angles.

Sapphire ranks 9 on the Mohs scale, second only to diamond, ensuring legendary durability for high-end heirloom jewelry.

• Type: Natural Sapphire

• Origin: Ceylon (Sri Lanka)

• Treatment: No indications of heating (Unheated)

• Weight: 15.904 Cts.

• Dimensions: 14.51 x 13.84 x 8.44 mm

• Color: Blue

• Shape/Cut: Antique Cushion (Brilliant/Step Cut)