Precision Science.
Absolute Authenticity.
Global leaders in gemstone grading, diamond certification, and advanced gemological research. Verified by experts, trusted by you.
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Curated Gemstones
Verified identification and characteristics
Brilliance
Moissanite
Superior fire and 9.25 hardness, making it a sustainable choice for fine jewelry.
Royal Blue
Natural Sapphire
The gemstone of wisdom. We verify origin, heat treatment, and color intensity.
Colombian
Natural Emerald
Highly prized green beryl. Our lab specializes in identifying clarity enhancements.