5.40 Carat GIA Unheated Blue Ceylon Sapphire Diamond & Platinum Ring

An exceptional statement ring centered by a GIA-documented natural blue sapphire from Sri Lanka (Ceylon) with no indications of heating — an increasingly desirable combination for collectors of important colored gemstones.

The substantial cushion-shaped sapphire measures approximately 11.01 × 9.02 × 6.38 mm and displays a modified brilliant-cut crown with a step-cut pavilion. Its vivid blue color is beautifully showcased in a substantial platinum setting accented by ten near-colorless round brilliant diamonds along the sculptural shoulders.

The sapphire is accompanied by GIA Sapphire Origin Report No. 1547247449, dated December 25, 2025, confirming natural corundum, natural sapphire variety, Sri Lankan geographic origin and no indications of heating.

DETAILS

Gemstone: Natural Blue Sapphire
Origin: Sri Lanka (Ceylon)
Treatment: No Indications of Heating
Measurements: 11.01 × 9.02 × 6.38 mm
Cut: Modified Brilliant Crown / Step-Cut Pavilion
Accent Stones: 10 Near-Colorless Round Brilliant Diamonds
Metal: Platinum, marked PT850
Certification: GIA Sapphire Origin Report No. 1547247449
Condition: Excellent estate condition

A dramatic sapphire with serious presence — and the kind of unheated Ceylon provenance collectors specifically look for.

Please note: The sapphire is mounted and the GIA report does not state its carat weight. Any carat-weight estimate should therefore be represented as an approximation rather than a verified weight.