When a maid steals a $250,000 gold and diamond necklace from a famous rappers hotel room, only to find that those diamonds are actually CZs, it puts the hotel manager in a state of panic. Sure, he feels good about recovering the stolen necklace. But how does he prove its the same necklace the rapper paid a quarter of a million dollars for, thinking it had white and canary diamonds set in it?.... (2010) Complete Story
This short paper discusses some of the things to think about when considering obtaining a microscope to use for gemology. There is some emphasis on inexpensive options. In putting together my own modest gemmology lab I did a lot of comparison shopping and adapting of various equipment to keep my costs down....
(1996) Complete Story
Polariscopes are a very useful, simple and inexpensive to make piece of gemological equipment. They are used to tell glass from gem materials synthetic spinel from all other materials, singly refractive from doubly refractive, crystaline from cryptocrystaline material, doublets and triplets from other gems.... (1997) Complete Story