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This is a genuine Marianovich Gems Certificate of Authenticity.
Demantoid
Marianovich Gemstone Report № 557 767 852 · August 11, 2026
Details
Item DescriptionOne loose stone
Weight2.86 carats
Measurements11.6 x 6.35 x 4.8 mm
ShapeHalf Moon
ColorVivid Green
Hardness6.5
TransparencyTransparent
Conclusion
MineralGarnet (Andradite)
VarietyNatural Demantoid
TreatmentUnheated/Untreated
OriginRussia
This is a Marianovich Gems Certificate of Authenticity — an in-house expert opinion issued by Marianovich Gems, not an independent laboratory report — backed by our Authenticity Guarantee. Geographic origin and color are stated as expert opinions, not guarantees.