I have always loved gemstones, both precious and semi-precious. This is a set of the polished variety. In order left to right one row at a time, they are as follows. Turquoise, Hematite, Chrysocolla, Tiger's eye, Quartz, Tourmaline, Carnelian, Pyrite, Sugilite, Malachite, Rose Quartz, Snowflake Obsidian, Ruby, Moss Agate, Jasper, Amethyst, Blue Lace Agate, Lapiz Lazuli, or Blue Lapis.
I think they are beautiful, and pure, a gift from nature to us.