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www.reference.com/beauty-fashion/determine-per-carat-value-ruby-152f07177926a0a7

Four aspects of gemstone grading determine the per-carat value of a ruby, including color, clarity, cut and carat. Quality of a top-grade ruby means it has rare features, rather than being labelled as better than another ruby.

www.wpdiamonds.com/how-much-ruby-worth

Another important factor in assessing ruby value is market conditions. Ruby colors and cuts that are in high demand at the time of sale will be able to fetch a high price on the secondhand market. HOW DO I OBTAIN INFORMATION ABOUT MY RUBY? Any certificates or appraisals you have can be helpful in determining the characteristics of your ruby.

www.gemsociety.org/article/ruby-jewelry-and-gemstone-information

Valuation Criteria: Color, origin, and treatments have the greatest impact on Ruby value. Clarity, cut, and carat are also important. How To Determine Value Of A Particular Ruby: Use our pricing tables and detailed buying guides to help determine the value of your Ruby or other gemstone

ourpastimes.com/how-to-calculate-the-value-of-a-ruby-12786814.html

The ruby is a variety of corundum. Other colors of corundum are classified as sapphires. The ruby was synthesized by the Verneuil process in 1902, and since that time many rubies that appear in the marketplace are synthetic. To determine whether the ruby you want to purchase is synthetic or natural, consult with an expert.

www.reference.com/beauty-fashion/much-ruby-worth-f7365e6b96044750

How Much Is a Ruby Worth? 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.

www.gia.edu/ruby-quality-factor

The per-carat prices of fine-quality rubies have been rising consistently, many times breaking auction records. For better-quality material, slight differences in color can make significant differences in value. For top-color ruby that’s also free of eye-visible inclusions, the price rises even more.

gemval.com/chart/ruby

Ruby's value is dependent on its quality, color and carat weight. Big, high-quality specimens can be extremely expensive - their price can go up to several thousand USD per carat. Large, transparent rubies are particularly rare. Synthetic rubies also exist, and are sometimes used as a substitute for naturally occurring gemstones; of course ...

www.csgnetwork.com/caratwtcalc.html

For example ruby and sapphire gems are both heavier than a diamond; technically, they have a higher specific gravity, so a 1 carat ruby or sapphire is smaller in size than a one carat diamond. However, I never met a carat I didn't like! Select the particular stone and cut. Enter the values and click on Calculate.

www.thenaturalsapphirecompany.com/education/sapphires-101/sapphire-carat-weight

Is the carat weight of a sapphire really the most important aspect that sets its price & value? In our helpful breakdown, find out how color, cut, clarity, and carat weight will affect each sapphire in different ways, and how to determine what the most important features for your sapphire will be.

www.withclarity.com/education/gemstone-education/sapphire-gemstone/sapphire-value

The price of some Sapphires range from $25 per carat to over $11,000 per carat. The most expensive sapphire was sold on record costing $135,000 per carat. The price of a sapphire is determined based on its quality, which means that a large, low-quality sapphire would be a lot cheaper than a small but very high-quality sapphire.