Clarity assesses the presence of internal characteristics called "inclusions" and external characteristics called "blemishes." The scale ranges from Flawless (FL) to Included (I). Flawless/Internally Flawless. VVS1/VVS2: Very, Very Slightly Included. VS1/VS2: Very Slightly Included. SI1/SI2: Slightly Included.
Aim for an "eye-clean" diamond. Many VS2 and even SI1 diamonds have inclusions that are invisible without a microscope. Paying for a higher clarity grade that you cannot see with the naked eye is a common beginner mistake. 4. Carat (The Physical Weight) how to buy a diamond
In white diamonds, the colour scale actually measures the lack of colour. The GIA scale runs alphabetically from D to Z. Rarest and most expensive. VS1/VS2: Very Slightly Included
Carat refers specifically to the weight of the diamond, not its physical dimensions (one carat equals 0.2 grams). Many VS2 and even SI1 diamonds have inclusions
Once a budget is set, the buyer must determine which visual aspect of the diamond matters most to them. Because perfect diamonds are exceedingly rare and expensive, buying a diamond is an exercise in compromise. Most buyers must choose between maximising size (carat) or maximising sparkle and purity (cut and clarity). The 4 Cs: The Universal Grading Standard
How to Buy a Diamond: A Comprehensive Guide to Intelligent Selection