This is a set of three issues of Mineral: No. 55, No. 6, and No. 10. I purchased these new about a year ago as random back issues, but I am selling the ones I already had or wasn't very interested in. Although they are new, I have flipped through them to check the contents. No. 6 Published February 2010 Feature: Amethyst Popular Color Smithsonite Fascinated by Natural Gold Red Spinel, etc. No. 10 Published October 2010 Feature: The Charm of the Feldspar Group - Red Oligoclase Crystals from Miyake Island Feldspar Gemstones: Moonstone to Sunstone Rhodochrosite Japanese Sugilite and Sugilite Lithium Tourmaline from Myoken-zan No. 55 Published October 2018 Feature: Fluorite Feature: Feldspar The Beauty and Interest of Mineral Crystal Shapes: Hexagonal and Trigonal Systems If you wish to purchase them individually, I will sell them at the following prices: No. 55: 1500 yen No. 6 and No. 10: 1000 yen each