Diamond Certificate: GIA

The Gemological Institute of America (GIA) is a non-profit organization that is widely recognized as one of the world's most respected authorities in gemology, with a focus on diamonds. The GIA has been providing diamond certification since the 1950s, and their grading system is considered the industry standard.

The GIA diamond certification process involves several steps, including examination by trained gemologists, analysis using specialized equipment, and verification of the diamond's origin and authenticity. The process results in a report that provides a detailed description of the diamond's carat weight, cut, clarity, and color, also known as the 4Cs.


The cut of a diamond refers to its proportions, which determine how well it reflects light and appears to sparkle. 

The clarity of a diamond refers to the absence of inclusions, or internal flaws, and blemishes, or surface imperfections. 

The color of a diamond refers to its hue, with the most valuable diamonds being colorless.

The carat of a diamond refers to its weight, with one carat equal to 200 milligrams. 


The GIA diamond certification report includes a detailed description of each of these characteristics, along with a diagram of the diamond's attributes. The report also includes an identification number that can be used to verify the diamond's authenticity and origin.

One of the most important aspects of GIA diamond certification is the consistency and reliability of their grading system. 

The GIA employs strict standards and procedures to ensure that each diamond is graded consistently and accurately, regardless of where it was mined or who submitted it for certification.

In addition to providing certification for loose diamonds, the GIA also offers grading services for diamond jewelry. This can be particularly useful for consumers who are looking to purchase a diamond engagement ring or other diamond jewelry, as the GIA certification can provide assurance of the diamond's quality and value.

Overall, the Gemological Institute of America's diamond certification is widely regarded as the gold standard in the diamond industry. Their rigorous standards and reliable grading system provide consumers with confidence in the quality and value of their diamonds. This makes the  GIA certification one of Brilyo Jewelry’s quality markers of the diamonds we offer. 

Here, each diamond we offer is carefully curated from our list of suppliers from all over the world. We make sure to have the highest quality diamonds that are at least “Very Good” in cut, eye clean, and at least near colorless in your preferred carat sizes. Each jewelry piece from us with diamonds above 0.5 carats come with their own GIA certification report for verification. 

We offer GIA diamonds on hand and can have diamonds with specific specs for preorder.

Book an appointment to view our diamond selection for your jewelry piece in our showroom located in Quezon City, Metro Manila. Contact us through our different social media channels such as Facebook and Instagram, or email us here.