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Round Brilliant Lab-Grown Diamond

Carat:1.05 cts

Cut: Very Good

Color: D

Clarity: SI2

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Lab-Grown Diamond Details


Certificate No.





6.66 - 6.74 x 3.97 mm

Special Characteristic


grading stats

Carat Weight

1.05 cts


Very Good







58 %

Total Depth

59.4 %

Girdle Thickness

Very Thin to Medium


Very Good


Very Good


Chatham’s Certificate & Grading Report

All Chatham Lab-Grown Diamonds are laser inscribed with the Chatham logo and Certificate Number.

Chatham Lab-Grown Diamonds

Diamonds are the most coveted gemstones on the planet. Made from a single element, carbon, diamonds are also the hardest minerals on Earth, earning its title of ‘the unconquerable’ from the Greek word adamas. Admired for its brilliance and vibrant fire, diamonds natural beauty is undeniable.

Chatham lab-grown diamonds are identical chemically, physically and optically to their mined counterparts. The only difference between lab-grown and mined diamonds is where they form: above the earth versus below the earth. Only sophisticated gemological equipment can distinguish a lab-grown from a mined diamond.

Since Chatham diamonds are never mined, you can feel good knowing you own a diamond that has less of a negative impact on the earth and on our neighbors.

To learn more about our diamond growth methods, please visit our Lab-Grown Guide.


A carat is a unit by which diamonds are weighed. One carat equals 200 milligrams or 1/5 gram. Specific measurements may not accurately represent the size of a diamond. While the scale below represents typical size relationships as the weight increases, size may vary.


The cut of a diamond is what makes it come alive! When evaluating the cut of a diamond, proportion and finish are the determining factors of its fire (the rainbow of colors that flash from within), brilliance (the white light that reflects back to the eye) and scintillation (the beautiful sparkle).

Very Good

Very good cut and proportions display nearly as much fire and brilliance as Excellent.


The Clarity Grade of a diamond refers to the microscopic internal and external characteristics of the diamond that formed during the growth process. Viewed under 10X magnification, these inclusions (internal) and blemishes (external) are classified as diamond flaws. But don’t let the word flaw scare you. It simply refers to the amount of inclusions or blemishes a stone may have. Similar to fingerprints, no two diamonds are ever identical, making your diamond unique and one-of-a-kind. Other determining factors of a clarity grade are size of inclusions, position within the diamond, type of inclusion and relief (inclusion’s color).

SI1 and SI2 (Slightly Included)

SI diamonds contain inclusions that are fairly easy for a trained gemologist to see under 10X magnification.


Color grades are determined by how much natural color is visible in a diamond, or lack thereof. The industry standard normal color range goes from colorless to a light yellow or brown (not to be confused with fancy color diamonds). The highest quality diamond is one that is absolutely colorless. The most widely used form of color grading is the D to Z Scale. Look at the scale below to determine where this diamond’s color grade falls.

Suggested Mountings