11 x 14 Vintage Mineral Poster - Tourmaline precious amethyst > Weighs over 1

> Weighs over 1

with each freeform calcite nodule weighing between 350-500g (~0

interpenetration-twin of two pentagonal-dodecahedra

This piece would be a great addition to your (or your rock lover giftee’s) collection

11 x 14 Vintage Mineral Poster - Tourmaline precious amethyst > Weighs over 1Vintage image from the early 1900s reproduced on uncoated classic matte paper. This lovely public domain image may be just what is needed to dress up your office, basement, rock collection or rock shop. This artwork features the following (look closely at the poster to reveal the ID tags): 1. Tourmaline, with rhombohedron; with albite and quartz on white granite 2. Tourmaline, rose red. Prism with dull, yellowish basal plane 3. Tourmaline, brown.