Argyle Type and Non-Argyle from Four Continents
Fancy colored diamonds are breaking all records at auctions for price paid per carat. Blue and red diamonds are considered the most expensive natural gems by weight in…
GemWorld articles are accessible by GemGuide members only.
Already a member?
Click here and Login
To access our archive of articles and get many other great features and benefits, become a member now!
Become a member