Rubies are the birthstone of July and the traditional gift for a 40th wedding anniversary. Ruby engagement rings are also a very popular choice for their deep, rich color and with a Mohs hardness of 9, they are suitable for everyday wear. Precious rubies are among the world’s most valuable gemstones. Burmese rubies from Myanmar have the "pigeon blood" color and are the rarest and most desirable. Rubies are commonly heated to improve their clarity, this is an acceptable treatment for even gem quality stones. EraGem hand selects each of our ruby rings for their vivid color, transparency and beauty.