Pink ChalcedonyA pink chalcedony shows off its beauty. Chalcedonies include many types of cryptocrystalline quartz gems and feature a number of different colors. Geologists can tell a chalcedony ...

In fact, pink diamonds are among the rarest but most in demand gems in the global market. And, the supply is only going to get more scarce. Just this month, the biggest pink diamond mine in the ...