Loose Diamonds Houston Certified Loose Diamonds The word Diamond comes from the ancient Greek word for invincible since it is famous for its hardness. In fact, it is the hardest and most durable naturally forming material on the planet. At Jewelry Depot Houston – Certified Loose Diamond Wholesale Jewelry Store choose from a vast range of certified round, emerald, Asscher, cushion, radiant, princess, marquise, oval, pear shape & heart-shaped cuts diamonds. The 4 C’s Clarity: Carats: Clarity characteristics are classified as inclusions (internal) or blemishes (external). Their size, number, position, nature, and color determine the grade. The carat, 0.200 grams is the standard unit of weight for Diamonds. Color: Cut The color scale indicates the Diamond’s intensity of body color; D (colorless) through Z (yellow). People generally prefer colorless or near colorless Diamonds. Cut describes the shape (outline), and the make (proportion and finish) of a Diamond. The better the cut, the more brilliant its light performance will be. Light Performance Analysis The combined light factors that make a diamond pleasing to the eye are: Brilliance, Dispersion, and Scintillation. Brilliance – White Light The quantity of light that enters the diamond and returns to the viewer as flashes of white light.