I was looking for a diamond engagement ring and found ahavadiamonds.com by accident. The store design is not too good and it is not easy finding what you want but the prices where so low I could not help myself. After I choose a ring, they let me customise the gold type and ring size. Then after 3 days the ring arrived with FedEX at my door.
Before buying I recommend learning about the four Cs":
Various characteristics of diamonds are graded and categorized by the diamond industry. Learning about diamonds is first learning about the "four Cs" of diamonds which are considered the most important grades and categories: Cut ", Clarity, Color, Carat weight .
Cut is probably the most important, and most challenging, of the four Cs to understand.
Most diamonds contain some inner flaws, or inclusions, that occur during the formation process. The visibility, number and size of these inclusions determine what is called the clarity of a diamond. Diamonds that are clear create more brilliance, and thus are more highly prized, and priced. Colorless diamonds are the most desirable since they allow the most refraction of light(sparkle). Off white diamonds absorb light, inhibiting brilliance. A carat is the unit of weight by which a diamond is measured. Because large diamonds are found less commonly than small diamonds, the price of a diamond rises exponentionaly to its size. Read this guide to get a better understanding of what a carat is and how it affects the appearance of a diamond.