Q. Is garnet an expensive stone?

Prices vary widely from around $500 for a carat that has some imperfections to over $7000 for a carat that is flawless and huge. As the most expensive kind of garnet Demantoid commands the highest prices. Each carat of diamond costs $15000. Cost: $10000 per carat for Alexanderite. Each carat of red beryl costs $10000. Garnets of the Demantoid kind cost $10000 per carat. Smaller less flawless stones with good color can be purchased for as little as $500 a carat while bigger more flawless stones of top color can cost as much as $2000 to $7000. In addition to being one of the rarest colored gemstones demantoid garnet also happens to be the rarest kind of garnet.