How do I value uncut rubies?

Understanding the value of colored stones is vital to a successful purchase, but grading and valuation is not that easy. Indeed, it is a far more ... Gemstones that normally may have a few inclusions include Alexandrite, Andalusite, Iolite, Peridot, Rhodolite, Ruby, Sapphire, Spinel, Tourmaline, Tsavorite. read more

The value of uncut rubies works the same as most gemstones and in a normal sales market is a function of the quality/rarity & market demand. I've seen uncut rubies sell for a few dollars per carat to thousands of dollars per carat. read more

High-value ruby rough is tightly controlled and rarely makes its way to custom cutters. Occasionally, such native stones are recut to custom proportions, albeit at a loss of weight and diameter. Custom cut and recut stones are usually more per carat. read more

Simply, if you don't know how, you can't. You would have to know the quality of the rough, what it could be cut into, the going market conditions for rubies, and if you even have a customer for it. read more