編號 101512072

編號 101512072

Gemstone: Natural cobalt spinel
Weight: 3.01 ct
Dimensions: 8.01 × 9.03 × 5.64 mm
Shape & Cut: Heart-shaped, mixed brilliant/step cut
Colour: Medium to deep blue, cobalt-bearing
Transparency: Transparent
Clarity: Slight inclusions (visible under magnification, minor impact on appearance)
Lustre: Vitreous
Treatment: No indication of thermal treatment
Origin: Tanzania
Condition: Natural gemstone with typical internal inclusions; no chips or cracks observed
Certification: Accompanied by GRS (GemResearch Swisslab) report
Shipping: Secure and insured shipment with tracking