SELENITE Crystal Specimen Jar Natural Reiki Healing Stone Chakra Wire Wrapping for Sale

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SELENITE Crystal Specimen Jar Natural Reiki Healing Stone Chakra Wire Wrapping For Sale

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SELENITE Crystal Specimen Jar Natural Reiki Healing Stone Chakra Wire Wrapping:
$9.95

Each jar weighs about 3.00 grams and measures 24 mm x 12 mm.The crystals in the jar weigh approximately 1 gram.A purchase quantity of one will include one jar of crystals.
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and I will buy back the item for your full purchase price.Hi there. I am selling this really lovely jar of selenite crystals (also known as satin spar) from Morocco. It\'s beautiful on its own as a display piece but it also makes a great piece for wire wrapping to use as a pendant. If you have any questions, do not hesitate to ask me. Have fun offerding, thanks so much for visiting my sale and have a great day!
Below is some information about selenite from Wikipedia:
Selenite (mineral)From Wikipedia, the free encyclopediaJump to navigationJump to searchNot to be confused with Selenite (ion).SeleniteGypse-sélénite 3.jpegGeneralCategory Sulfate mineralFormula(repeating unit) CaSO4·2H2OCrystal system Monoclinic (2/m) Space group: A2/aIdentificationFormula mass 172.17Color Brown green, brownish yellow, greenish, gray green, gray whiteCrystal habit Earthy – dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).Cleavage [010] Perfect, [100] Distinct, [011] DistinctFracture Fibrous – thin, elongated fractures produced by crystal forms or intersecting cleavages (e.g. asbestos).Mohs scale hardness 2Luster PearlyStreak whiteSpecific gravity 2.9Optical properties Biaxial (-) 2V=58Refractive index nα=1.519-1.521, nβ=1.522-1.523, nγ=1.529-1.53Birefringence δ =0.0090-0.0100Other characteristics non-radioactive, non-magnetic, fluorescent.References [1]Selenite, also known as satin spar, desert rose, or gypsum flower are four crystal structure varieties of the mineral gypsum. These four varieties of gypsum may be grouped together and called selenite.
All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO4·2H2O. Selenite contains no significant selenium, the similarity of the names of the substances coming from the Ancient Greek word for the Moon.
Some of the largest crystals ever found are of selenite, the largest specimen found in the Naica Mine\'s Cave of the Crystals being 12 metres long and weighing 55 tons.Contents1 History and etymology2 Identification of crystals as gypsum3 Varieties3.1 Selenite3.2 Satin spar3.3 Desert rose3.4 Gypsum flower4 Use and history5 Crystal habit and properties5.1 Color5.2 Transparency5.3 Luster5.4 Play of color5.5 Tenacity5.6 Size6 Occurrence7 Images8 See also9 References10 External linksHistory and etymologyThe etymology of selenite is through Middle English selenite, from Latin selenites, from Greek selēnitēs (lithos), literally, moonstone or stone of the moon, from selēnē (Moon). The ancients[who?] had a belief that certain transparent crystals waxed and waned with the moon.[citation needed] From the 15th century, \"selenite\" has referred specifically to the variety of gypsum that occurs in transparent crystals or crystalline masses.[2]
Identification of crystals as gypsumAll varieties of gypsum are very soft minerals (hardness: 2 on Mohs Scale). This is the most important identifying characteristic of gypsum, as any variety of gypsum can be easily scratched with a fingernail. Also, because gypsum has natural thermal insulating properties, all varieties feel warm to the touch.
VarietiesThough sometimes grouped together as \"selenite\", the four crystalline varieties have differences. General identifying descriptions of the related crystalline varieties are:
Selenitemost often transparent and colorless: it is named after Greek σεληνη \"the moon\".if selenite crystals show translucency, opacity, and/or color, it is caused by the presence of other minerals, sometimes in drusedruse is the crust of tiny, minute, or micro crystals that form or fuse either within or upon the surface of a rock vug, geode, or another crystalSatin sparmost often silky, fibrous, and translucent (pearly, milky); can exhibit some colorationthe satin spar name can also be applied to fibrous calcite (a related calcium mineral) – calcite is a harder mineral – and feels greasier, waxier, or oilier to the touch.Desert roserosette shaped gypsum with outer druse of sand or with sand throughout – most often sand colored (in all the colors that sand can exhibit)the desert rose name can also be applied to barite desert roses (another related sulfate mineral) – barite is a harder mineral with higher densityGypsum flowerrosette shaped gypsum with spreading fibers – can include outer drusethe difference between desert roses and gypsum flowers is that desert roses look like roses, whereas gypsum flowers form a myriad of shapesUse and historyVarieties of gypsum known as \"satin spar\" and \"alabaster\" are used for a variety of ornamental purposes like sculptures and a substitute for window glass.[3] But also because of the long history of the commercial value and use of both gypsum and alabaster, the four crystalline varieties have been somewhat ignored, except as a curiosity or as rock collectibles (not commonly used).
Crystal habit and properties
Columnar crystal habit
\"Gypsum flower\" speleothem, Mammoth Cave Kentucky. Orange color is iron oxide from groundwater. Wikimedia Commons has media related to Gypsum flowers.Crystal habit refers to the shapes that crystals exhibit.[4]
Selenite crystals commonly occur as tabular, reticular, and columnar crystals, often with no imperfections or inclusions, and thereby can appear water or glass-like. Many collectible selenite crystals have interesting inclusions such as, accompanying related minerals, interior druse, dendrites, and fossils. In some rare instances, water was encased as a fluid inclusion when the crystal formed (see Peñoles Mine reference in external links).
Selenite crystals sometimes form in thin tabular or mica-like sheets and have been used as glass panes[5][6] as at Santa Sabina in Rome.
Selenite crystals sometimes will also exhibit bladed rosette habit (usually transparent and like desert roses) often with accompanying transparent, columnar crystals. Selenite crystals can be found both attached to a matrix or base rock, but can commonly be found as entire free-floating crystals, often in clay beds (and as can desert roses).
Satin spar is almost always prismatic and fibrous in a parallel crystal habit. Satin spar often occurs in seams, some of them quite long, and is often attached to a matrix or base rock.
Desert roses are most often bladed, exhibiting the familiar shape of a rose, and almost always have an exterior druse. Desert roses are almost always unattached to a matrix or base rock.
Gypsum flowers are most often acicular, scaly, stellate, and lenticular. Gypsum flowers most often exhibit simple twinning (known as contact twins); where parallel, long, needle-like crystals, sometimes having severe curves and bends, will frequently form “ram’s horns”, \"fishtail\", \"arrow/spear-head\", and \"swallowtail\" twins. Selenite crystals can also exhibit “arrow/spear-head” as well as “duck-bill” twins. Both selenite crystals and gypsum flowers sometimes form quite densely in acicular mats or nets; and can be quite brittle and fragile. Gypsum flowers are usually attached to a matrix (can be gypsum) or base rock.
Color
Azurite-gypsum \"Buda Rock\", Ray Mine Arizona. A core of glassy and colorless gypsum crystals up to 1 cm in length with a druse of royal blue azurite, to 0.5 cm in length on the smaller gypsum crystals and included within the larger ones.Gypsum crystals are colorless (most often selenite), white (or pearly – most often satin spar), gray, brown, beige, orange, pink, yellow, light red, and green. Colors are caused by the presence of other mineral inclusions such as, copper ores, sulfur and sulfides, silver, iron ores, coal, calcite, dolomite, and opal.
TransparencyGypsum crystals can be transparent (most often selenite), translucent (most often satin spar but also selenite and gypsum flowers), and opaque (most often the rosettes and flowers). Opacity can be caused by impurities, inclusions, druse, and crust, and can occur in all four crystalline varieties.
LusterBoth selenite and satin spar are often glassy or vitreous, pearly, and silky – especially on cleavage surfaces. Luster is not often exhibited in the rosettes, due to their exterior druse; nevertheless, the rosettes often show glassy to pearly luster on edges. Gypsum flowers usually exhibit more luster than desert roses.
Play of colorFibrous satin spar exhibits chatoyancy (cat\'s eye effect).
When cut across the fibers and polished on the ends, satin spar exhibits an optical illusion when placed on a printed or pictured surface: print and pictures appear to be on the surface of the sample. It is often called and sold as the “television stone” (as is ulexite).[7]
Some selenite and satin spar specimens exhibit fluorescence or phosphorescence.
TenacityAll four crystalline varieties are slightly flexible, though will break if bent significantly. They are not elastic, meaning they can be bent, but will not bend back on their own.
All four crystalline varieties are sectile in that they can be easily cut, will peel (particularly selenite crystals that exhibit mica-like properties), and like all gypsum varieties, can be scratched by a fingernail (hardness: 2 on Mohs Scale). The rosettes are not quite as soft due to their exterior druse; nevertheless, they too can be scratched.
Selenite crystals that exhibit in either reticular or acicular habits, satin spar, in general (as fibrous crystals are thin and narrow), desert roses that are thinly bladed, and gypsum flowers, particularly acicular gypsum flowers, can be quite brittle and easily broken.
SizeSee also: Cave of the CrystalsAll four crystalline varieties can range in size from minute to giant selenite crystals measuring 11 meters long such as those found in the caves of the Naica Mine of Chihuahua, Mexico. The crystals thrived in the cave\'s extremely rare and stable natural environment. Temperatures stayed at 58 °C, and the cave was filled with mineral-rich water that drove the crystals\' growth. The largest of those crystals weighs 55 tons, is 11 meters (36 ft) long, and is over 500,000 years old.[8]
OccurrenceGypsum 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, and caves. It is frequently found in conjunction with other minerals such as, copper ores, sulfur and sulfides, silver, iron ores, coal, calcite, dolomite, limestone, and opal. Gypsum has been dated to almost every geologic age since the Silurian Period 443.7 ± 1.5 Ma.[9]
In dry, desert conditions and arid areas, sand may become trapped both on the inside and the outside of gypsum crystals as they form. Interior inclusion of sand can take on shapes such as an interior hourglass shape common to selenite crystals of the ancient Great Salt Plains Lake bed, Oklahoma, US.[10] Exterior inclusion (druse) occurs as embedded sand grains on the surface such as, commonly seen in the familiar desert rose.
When gypsum dehydrates severely, anhydrite is formed. If water is reintroduced, gypsum can and will reform – including as the four crystalline varieties. An example of gypsum crystals reforming in modern times is found at Philips Copper Mine (closed and abandoned), Putnam County, New York, US where selenite micro crystal coatings are commonly found on numerous surfaces (rock and otherwise) in the cave and in the dump.[11]
Whereas geology, mineralogy, and rockhounding groups, clubs, and societies as well as museums usually date (of find and geologic), photograph, and note location of minerals, much of the retail mineral and jewellery trade can be somewhat casual about dates, locations, and descriptive claims.[citation needed]