so, depending on your buying range. but India is the cheapest followed up by China, Dubai, Thailand, and Belgium. they are the cheapest because most of the world's diamonds are cut there. so you do not have to pay any markup due to shopping or retailer markup.

Wholesale diamonds are cheaper for a few reasons. First, they are sourced directly from diamond mines or cutting factories, which cuts out the middleman and allows the buyer to save on markup. Second, because they are sold in bulk, wholesalers can offer a discount on the per-carat price.

A real diamond will reflect light easily, and provide you with a disco ball or rainbow-like display. You can use a flashlight or lamp to do this and it will work best with white light rather than yellow. If the stone absorbs the light, then there's a chance that it's a fake.

Clarity is how pure it is from internal and external blemishes or inclusions in the stone, as for the carat, it represents the size of the diamond. Investment Wise, loose diamonds bear high value as they are known to be always on demand, and supply is limited.