proven by the science of light
Gcal 8X Certification
GCAL (Gem Certification & Assurance Lab) is notable for its world's highest standards in certification and transparency in diamond cut grading. Unlike GIA and IGI, which only issues Cut grades for 57 faceted round brilliants, GCAL offers an 8X grading report, evaluating eight distinct criteria: brilliance, fire, scintillation, symmetry, polish, craftsmanship, optical precision, and shape aesthetic. This comprehensive approach provides an in-depth, scientifically proven look at a diamond's quality and performance for both Lab-grown and Natural diamonds. While we do work closely with other grading laboratories like GIA and AGS, GCAL 8x Report remains our most preferred choice for consumer protection and transparency to ensure consumers are getting the highest Cut quality diamond. Each Octagon Nova comes with a GCAL 8X certification, which is one of the strictest certifications available globally, recognized for its precision and quality assurance. GCAL holds ISO/IEC 17025 accreditation, which is the gold standard for testing and calibration laboratories. This accreditation is granted only to laboratories that demonstrate technical competence, rigorous quality management, and accuracy in testing and calibration results. The 8X certification confirms that each Octagon Nova meets the highest standards in eight aspects of diamond quality, including light performance, cut precision, and durability. This certification reinforces the Octagon Nova’s commitment to both design and scientific excellence, providing customers with verified assurance of quality and brilliance.
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