A simple introduction to tourmaline, highly favored by jewelry designers for its rich colors, sometimes several in a single stone, with insight into each type and its colors.
https://www.gemselect.com/gem-info/tourmaline/tourmaline-info.php
gemstones
You, A Garnet Expert In Less Than 5 Minutes
Educational, Gemstones1 CommentA Day In The Life Of A Jewelry Artist 02: Gemstone Selection Process
Jewelry Artist DiaryCommentThe Tucson Gem Show is the crown jewel event for jewelry designers worldwide. I first attended in 2002, and this is my gemstone selection process at the 2018 show.