Graining
Graining refers to faint wavy, hazy, oily, or shadow-like lines that can appear inside a diamond or on its surface.
Diamonds
Green Diamond
A green diamond is a diamond that exhibits a natural green body colour, making it one of the rarest and most sought-after coloured diamonds in the world.
Grading Report
A grading report, also known as a diamond certificate, is an official document issued by a recognised and independent diamond grading laboratory.
Grainer
The term “grainer” is used in the diamond industry to describe a diamond’s weight in quarter-carat (0.25 ct) increments.
Gemmology
Gemmology is the scientific study of gemstones, encompassing their identification, evaluation, grading, and authentication.
Girdle
The girdle helps protect the diamond from chipping and damage, particularly along its edges.
A properly proportioned girdle ensures the diamond remains stable when set in a ring, pendant, or other jewellery.
Girdle Thickness
Girdle thickness refers to the width of the diamond’s girdle, which is the outer edge separating the crown (top) from the pavilion (bottom).
Gem Quality
Only about 20% of mined diamonds are of gem quality, meaning they meet the necessary standards for use in jewellery.
Fracture
A fractured diamond refers to a diamond that has an internal fracture, often called a fracture or crack.
Fracture Filling
Fracture filling is a treatment used to improve the clarity and appearance of diamonds that have visible fractures or cracks.