Sapphires range from a pale watery blue color to a rich violet-blue hue, with these darker more intensely colored stones being the most desirable.Īlthough corundum by any color other than blue or red is known as a ‘–sapphire’ the color it is is used as a prefix to the word sapphire – used alone, sapphire refers only to blue corundum. Rubies range from a pale orange-pink color to a dark purplish-red – the most desirable colors are those from vibrant to dark red, and these are more expensive. The blue color of sapphires is caused by iron and titanium.Ī colorless corundum is known as a white sapphire, and of any other color (such as yellow, orange, or green) are known as ‘fancy sapphires.’ The red color of rubies is caused by the presence of chromium. Impurities in the mineral cause it to take on different colors. Red corundums are rubies, and blue corundums are sapphires they have the same chemical composition. What are rubies and sapphires?īoth rubies and sapphires are variations of the same mineral, corundum. Learn more about the composition of rubies and sapphires, and how much these rare gems are worth. However, both gems are widely synthesized and quality synthetics of both can be bought for under $500. Though rubies and sapphires are variations of the same mineral, natural rubies are far rarer than natural sapphires and considerably more expensive. Rubies and sapphires are rival emeralds in their popularity and stunning colors, and are widely synthesized – but which is more expensive?
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