How much is 1 carat black diamond worth?

When it comes to black diamonds, there is a big difference in value between natural and treated stones. Natural black diamonds are very rare and can be worth up to $3,000 per carat. Treatments to create black diamonds are much more common and these stones typically sell for around $300 per carat.

If you're considering purchasing a black diamond, be sure to ask about its treatment history so you know what you're getting.