Some laboratories are known for giving lenient grades (e.g., grading a diamond as a 'G' when it is actually an 'I'). Buying a GIA-certified stone ensures you get exactly what you pay for.
These are the most trusted, strictest, and most consistent grading laboratories in the world. how to buy a diamond
The most popular shape, engineered specifically to produce the most sparkle. Some laboratories are known for giving lenient grades (e
A well-cut diamond reflects light internally from one facet to another and disperses it through the top. how to buy a diamond