Ruby Price Calculator

Estimate the value of your ruby based on carat weight, color quality, origin, and treatment status.

Ruby Value Estimator

Get an estimated value for your ruby.

ct

Ruby Origin Price Comparison

Compare ruby prices across different origins.

ct

Investment-Grade Ruby Analysis

Evaluate whether your ruby qualifies as investment grade.

ct
Was this calculator helpful?

Formula

Ruby Value = Base Price/ct × Carat × Color Multiplier × Origin Factor × Treatment Factor
Per-carat price increases exponentially above 1ct, 3ct, and 5ct thresholds

Frequently Asked Questions

How much is a ruby worth per carat?
Prices range from $100/ct for commercial grade to over $100,000/ct for exceptional untreated Burmese pigeon blood rubies. Fine quality rubies typically range $3,000-$15,000 per carat.
What makes a ruby valuable?
Vivid "pigeon blood" red color, eye-clean clarity, excellent cut, no treatment, and Burmese origin. These factors combined create the most valuable rubies in the world.
Are heated rubies less valuable?
Yes, heat treatment reduces value by 25-50%. However, heat treatment is standard in the trade. Lead-glass filled rubies are worth 90-95% less and are not considered genuine by most experts.

Understanding Ruby Prices

Rubies are the most valuable colored gemstone, with top specimens exceeding diamond prices per carat. The "pigeon blood" color -- a vivid, slightly bluish red with strong fluorescence -- is the most sought-after hue. This color is most associated with Burmese rubies from the Mogok valley, where rubies have been mined for centuries.

Origin plays a crucial role in ruby pricing. Burmese rubies command premiums of 2-5x over similar-quality stones from other sources. Mozambique has emerged as a major source of fine rubies since the 2009 discovery of deposits in Montepuez, and top Mozambique rubies now rival Burmese stones in quality. Madagascar, Thailand, and Sri Lanka also produce notable rubies.

The ruby market has shown consistent appreciation for investment-grade stones. Untreated Burmese rubies over 3 carats with fine color have appreciated 5-10% annually over the past two decades. At major auction houses like Christie's and Sotheby's, record-breaking ruby prices continue to be set, confirming the ruby's status as the "king of gemstones."

Related Calculators