C R E S T O N N E
Cornflower Blue Sapphire — main view
Blue Sapphire · Ratnapura

Cornflower Blue Sapphire

UnheatedAvailable

$42,500

Unheated — its color is entirely the earth's own work, confirmed with no indications of heating on the laboratory report.

Specifications

Stone TypeNatural Blue Sapphire
Carat Weight4.18 ct
Dimensions10.2 × 8.6 × 5.9 mm
ShapeCushion
ColorCornflower blue
TreatmentUnheated
OriginRatnapura
ClarityEye-clean
CertificationGIA · 2231847163

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This 4.18-carat cushion-cut sapphire was recovered from the alluvial gem gravels of Ratnapura, Sri Lanka's storied "City of Gems." Its cornflower blue hue — the most coveted shade in the Ceylon sapphire tradition — is entirely natural, with no heat or other treatment applied.

The stone was cut by a third-generation lapidary in Ratnapura to preserve maximum carat weight while opening a broad, even face-up window. Eye-clean clarity and a lively, well-proportioned cushion cut give it exceptional brilliance across the table.

Accompanied by a GIA certificate confirming origin and the absence of treatment.

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