Written by jeweller and gemmologist Sally, this book explains gemstone durability (hardness, toughness and stability) and why this is important for jewellers.
Covering the familiar gems such as amethyst to the more unusual such as sillimanite, it also explains which jewellery making processes each stone may or may not survive, and why!
These processes include abrasives, barrel polishing, casting in place, firing in a kiln, filing, pickling, polishing, steam cleaning, heat from a torch (including firing in metal clay) and ultrasonic cleaning.
Certain visual information can give an indication of how a stone may react during these processes and details of how to look for some of these using a 10x loupe are explained. Price: £27.99