"I purchase my gems directly from the mines and sell directly to my worldwide customers. That's why my prices are among the very best in Thailand. I want my customers to get the best deals - and they know that. So they come back."
(Mr Nasser, founder of Shiraz Jewelry Chiang Mai)
In ancient times, some of the gemstones we wear today, such as tanzanite and tsavorite, were unknown. Had they been known, tanzanite would probably have been called sapphire and tsavorite, emerald. It was generally held that if a stone were blue it was sapphire, if it were red it was ruby, if green, it was emerald, and so on. Here are some well-known stones that are popular.