http://www.memphisgeology.org/g_selenite.htm Mohs scale hardness: 2: Luster: Pearly: Streak: White: Specific gravity: 2.9: Optical properties: Biaxial (-) 2V=58: Refractive index: nα=1.519-1.521, nβ=1.522-1.523, nγ=1.529-1.53: Birefringence: δ =0.0090-0.0100: Other characteristics: Non-radioactive, non-magnetic, fluorescent: References See more Selenite, satin spar, desert rose, gypsum flower are crystal habit varieties of the mineral gypsum. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate … See more The main distinguishing characteristics of crystalline gypsum are its softness (hardness 2 on Mohs scale, soft enough to scratch with a fingernail) and its three unequal cleavages. … See more Satin spar is sometimes cut into cabochons to best display its chatoyance. See more Crystal habit refers to the shapes that crystals exhibit. Selenite crystals show a variety of habits, but the most common are tabular, … See more "Selenite" is mostly synonymous with gypsum, but from the 15th century, it has named the transparent variety that occurs in crystals or crystalline masses. The name derives … See more Though sometimes grouped together as "selenite", the four crystalline varieties have differences. General identifying descriptions of the related crystalline varieties are: Selenite • Most … See more Gypsum occurs on every continent and is the most common of all the sulfate minerals. Gypsum is formed as an evaporative mineral, frequently found in alkaline lake muds, clay beds, evaporated seas, salt flats, salt springs, … See more
Mini Me Geology BlogMeet Selenite Gypsum - Our New Favorite Mineral …
WebApr 18, 2024 · At only 2 on Mohs’ scale of hardness, selenite is a very soft material that can be scratched by a fingernail. It is not suitable for faceting but can be carved as … WebRed Jasper measures 6.5-7 on the Mohs Scale of hardness. The colour of Red Jasper ranges from bright red to brownish red. Jasper appears in many colours, including blue, red, green, yellow, black, or even the distinctive green-and-red speckled variety known as … duluthfiber.com
How to tell if Selenite is Real or Fake in 5 Easy Ways
WebSelenite is a translucent, multi-faceted stone that’s made from gypsum crystals that have been crystallized. When sulfate and calcium-rich saltwater evaporates, selenite is created, with a hardness of 2 on the Mohs scale. Selenium (selenite’s trace element form) has been shown to have a number of health advantages. Web5 rows · Mar 8, 2024 · Real vs. Fake Selenite. TIP: One of the most common ways to recognize real and fake selenite is ... Webwith a knife); with a Mohs hardness of 1, it can be easily scratched by a fingernail. 1 Gypsum var. Selenite General note Gypsum is a very soft mineral composed of calcium sulfate dihydrate. Gypsum occurs in nature as flattened and often twinned crystals and transparent cleavable masses called selenite. On the Moh's Hardness scale it rates ... duluth fashion