Do you have back issues of Garden Gate available for sale? a. We no longer have individual back issues available for purchase; however, we do have annual volumes.
Topaz is found in the gem pegmatites of San Diegeo County, in localities such as the Little Three Mine in Ramona, and the Ware Mine in Oak Grove. Colorless Topaz come from the Pikes Peak area in El Paso Co., Colorado, particularly in Glen Cove, Devils Head, and Crystal Peak. Fine colorless and light blue tabular crystals come from Mason Co., Texas (near Streeter, Katemcy, and Grit).
Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO42. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and other faces. It is one of the hardest naturally occurring minerals and is the hardest of any silicate mineral. This hardness combined with its usual transparency and variety of colors means that it has acquired wide use in jewellery as a cut gemstone as well as for intaglios and other gemstone ca