Best and newest sites for investing in diamonds:
Plenty of sites try to sell diamonds, but few will instruct you on how to profit from them as investments. This site covers all aspects of the industry - such as investment, production, mining and corporate news - and includes analyses of retail and wholesale auctions. If a major sale happens, the site's analysts study it. Mining discoveries and setbacks are also reported and discussed in terms of their impact on listed stocks.
Under the precious metals section, this site's diamond page offers actionable investment news and insight. It emphasises the financial and investment aspects of the business. Buyouts, new mines and regulatory news are studied for how they will affect industry share prices. The site's authors are always on the lookout for catastrophic investment events, such as the nationalisation of a key mine, or changes in government treatment of miners.
Although it is somewhat disorganised and inelegant, this site offers plenty of links and educational material for novice investors. A 50-year price chart gives investors some perspective on the direction of diamond prices. The site provides links instructing readers on diamond investing, how to find reliable wholesalers and diamond labs. It is somewhat biased towards the positive aspects of diamonds, but provides enough objective data to be useful to investors.