According to the second edition of the Standard Catalog of Gem Values, wholesale prices for faceted gem rubies range from $100 to $15,000 per carat. Wholesale prices vary based on color, size, origin and clarity.
According to a price survey by the International Gem Society, clean, top-color rubies with a size range of 1/2 to 1 carat sell online at retail prices between $1,000 to $3,000 per carat. Rubies are the most valuable gems of the corundum family. In fact, large rubies can be more valuable than diamonds of the same size and are actually rarer. Ruby is the birthstone for the month of July.Learn More
Individual diamond prices vary and depend on the characteristics of each stone. Established in the 1940s, the grading system currently in use weighs each stone's color, clarity, cut and carat weight in determining its price.Full Answer >
Rubies are bright red precious stones which can be anywhere from transparent to opaque. They are the red version of corundum. According to Minerals.net, rubies get a nine on the hardness scale.Full Answer >
Rubellite is a red-colored gemstone differing from rubies in several ways: it is more rare than ruby; it is less dense; it is not as fiery or brilliant; and it is not as hard as a ruby. The beautiful red color of rubellite makes it desirable for jewelry, like ruby, but it is actually a tourmaline. Because it is less desirable for most buyers, rubellite is also much less expensive.Full Answer >
The diameter of a one-carat round or brilliant cut diamond typically measures between 6.4 and 6.5 millimeters. The term carat refers to weight not size, so a one-carat diamond doesn't need to conform to specific measurements.Full Answer >