When buying small loose diamonds, or any other diamonds, a buyer should consider the 4 Cs: cut, colour, clarity & carat, our aspects that allow a buyer to determine the quality of a diamond.
Cut is different from shape. Shape concerns whether the diamond is round, emerald-cut, or pear-shaped, for example. Cut concerns how the facets cut into a diamond reflect and refract light. The cut of a diamond has a great deal to do with how it looks to the naked eye - how it sparkles.
Color determines how much yellow tinge is present in the diamond. The scale, from "D" to "Z," covers diamonds that are colorless to those with a faint yellow tinge. Some diamonds in the "H-J" range may appear nearly colorless, but much "warmer" than diamonds with less color. They are also usually less expensive.
