1.31 ct Blue Sapphire — Oval Mixed Cut
1.31 ct Blue Sapphire — Oval Mixed Cut
Collector's Note
A softly colored 1.31 ct natural blue sapphire in an elongated oval mixed cut. The stone has a bright, open appearance with noticeable windowing; that optical trade-off is reflected in its Discovery-level O50 evaluation rather than obscured in the presentation.
Gemstone Details
Gemstone: Natural Blue Sapphire
Species: Natural Corundum
Weight: 1.31 ct
Shape / Cut: Oval Mixed Cut
Measurements: 7.90 × 5.89 × 3.08 mm
Color: Blue
Transparency: Transparent
Treatment: Heated
O50 Collector Evaluation
Otzera 50: 25/50 — Discovery
Face-Up Performance: 53%
Treatment
Heat treatment is recorded for this sapphire.
Care & Setting
Sapphire is highly durable and suitable for everyday jewelry with normal care. Clean with warm water, mild soap and a soft brush.
Digital Gem Passport
Accompanied by an Otzera Digital Gem Passport preserving its identifying details, treatment disclosure and O50 evaluation.
