GRADING AND CERTIFICATION
Ask your jeweler for a GCAL Guaranteed Certificate. Ensure the 4Cs you're paying for are actually the 4Cs you're getting.
GCAL is the only gemological laboratory who stands behind their diamond grading with a guarantee.
Ask your jeweler for a GCAL Guaranteed Certificate. Ensure the 4Cs you're paying for are actually the 4Cs you're getting.
GCAL is the only gemological laboratory who stands behind their diamond grading with a guarantee.
One Location • One Standard • Graded in the USA
DIAMONDS
Guaranteed Grading of the 4C's Verification of Authenticity Gemprint & Laser Inscription
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JEWELRY
Identification & Grading of Gemstones Analysis of Precious Metal Conformance with FTC guidelines
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LAB GROWN DIAMONDS
Identification of Growth Method, Guaranteed Grading of the 4C's, Gemprint & Laser Inscription
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COLORED STONES
Identification of Gemstone Type And Treatment Disclosure Grading of Quality
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COLORED DIAMONDS
Identification of Color Origin Guaranteed Grading of the 4C's Gemprint & Laser Inscription
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