What are rough diamonds worth?
3,750 x 0.50 = $1,875.00 (this is our purchase price for this rough diamond). The purchase price per carat for this rough diamond is: 1,875 ÷ 5 carats = $375.00 per carat.

Why are rough diamonds so cheap?
Yes, raw diamonds CAN be cheaper. Because they haven’t been cut and polished, raw diamonds are automatically a little cheaper than their counterparts. They’re also likely to have inclusions which makes them less valuable, too.

How can you tell a raw diamond?
Steps
Look down at the top of the crystal and count the sides. Diamonds are cubic, while other similar stones like quartz are hexagonal. …
Scrape the crystal against a piece of corundum. Corundum is another kind of crystal that’s slightly less hard than a diamond. …
Use a diamond tester instead of using a scratch test.

What does a diamond look like when it’s found?
Crystal Form: Looking at the crystal form is a quick way of differentiating diamond from most of the other minerals that look like diamond. Diamonds are cubic (isometric) form. The most common mineral that looks like a diamond is quartz and it is hexagonal form.

Are uncut diamonds more expensive?
A diamond’s carat is a measure of weight (1 ct = 200 mg), and in general, bigger stones are more valuable since they are rarer. However, rough diamonds of a higher carat are not always more expensive than smaller ones. … All else being equal, bigger diamonds cost more per carat than smaller ones when cut.

Do diamonds appreciate in value?
The long and short of investment diamonds is that diamonds are subject to the fluctuations of supply and demand, so the more rare a diamond is, the more likely it will appreciate in value over time. Preserving and protecting a diamond ensures it retains and gains value.