Stone Grading & Certification

At Prata Diamonds, we are committed to providing only the highest quality stones for your custom-made jewelry. We use the most reputable grading organizations to ensure every stone meets our stringent standards for excellence.

GIA Natural Diamond Grading

GIA CERTIFICATE

The Gemological Institute of America (GIA) is the most trusted name in diamond grading. Here's why we choose GIA for our natural diamonds:

Unmatched Expertise:
GIA is renowned for its rigorous grading standards and extensive research in gemology.

Accurate Grading:
Each diamond is meticulously examined for its cut, color, clarity, and carat weight.

Laser Inscription:
Every GIA-certified diamond has its certification number laser inscribed on the girdle, providing a permanent proof of its authenticity.

IGI LAB-GROWN Diamond Grading

IGI CERTIFICATE

The International Gemological Institute (IGI) is our preferred grading organization for lab-grown diamonds. Here’s why we trust IGI:

Global Recognition:
IGI is one of the largest independent gemological institutions in the world, known for its comprehensive grading reports.

Detailed Analysis:
IGI provides thorough evaluations of the cut, color, clarity, and carat weight of lab-grown diamonds.

Laser Inscription:
IGI-certified lab-grown diamonds have their certification number laser inscribed on the girdle, ensuring traceability and authenticity.

GRA MOISSANITE Grading

GRA CERTIFICATE

For our moissanite stones, we rely on the Global Gemological Research Association (GRA). Here’s why GRA is our go-to for moissanite:

Specialized Knowledge:
GRA is a leader in moissanite grading, ensuring precise evaluation of these unique gemstones.

Quality Assurance:
GRA focuses on the cut, color, and clarity of moissanite, ensuring you receive a stone of exceptional brilliance.

Laser Inscription:
Each GRA-certified moissanite is laser inscribed with its certification number, guaranteeing its quality and authenticity.