MOLDAVITE and LIBYAN DESERT GLASS beautiful faceted ring - SIZE 7

Description: On Offer: Faceted Moldavite and Libyan Desert Glass set in Sterling Silver RingDescription: This is a beautiful faceted Libyan Desert Glass and Moldavite Glass in a sterling silver ring setting, ring size 7Ring Size: 7Dimensions of the faceted Moldavite center piece: approximately 8mm x 6.1mmDimensions of the faceted Libyan Desert Glass center piece: approximately 8mm x 6.1mmWhat you get: Faceted Moldavite Impact Glass and faceted Libyan Desert Glass set in a Sterling Silver ring as shown, and Certificate of AuthenticityI offer a 100% no questions asked 30 day return policy. LIBYAN DESERT GLASSLibyan Desert Glass is thought to have formed at least 29 million years ago, when a flash thermal event exceeding 1600 Celsius (likely) a thermally intense meteoric airburst (or perhaps even a direct hypervelocity meteorite impact) caused vast amounts of desert sand to melt and then subsequently be quenched, thus vitrifying the sand into what is now called LDG. Early neolithic tribes used the readymade glass to knapp tools, and later the Egyptians valued the golden glass so highly, it was frequently used as the centerpiece in royal jewelry. The location and existence of the glass was lost to history, until it was rediscovered in 1932 by P. Clayton while he was on expedition to survey the area. The glass is now sold by a small group of meteorite dealers and collectors, but is generally not available for purchase outside of these niche markets. MOLDAVITE GLASSFrom Wikipedia:MoldaviteMoldavite from Besednice, Bohemia, Czech RepublicGeneralCategoryGlassFormula(repeating unit)SiO2(+Al2O3)Crystal systemAmorphousIdentificationColorMossy greenMohs scalehardness5.5LusterVitreousDiaphaneityOpaque, translucent, transparentSpecific gravity2.32 to 2.38Optical propertiesIsotropicRefractive index1.48 to 1.54BirefringenceNonePleochroismAbsentDispersionNoneReferences[1] Moldavite (Czech: Vltavín) is an olive-green or dull greenish vitreous substance possibly formed by a meteorite impact in southern Germany (Nördlinger Ries),[2] which would make it one kind of tektite. They were introduced to the scientific public for the first time in 1786 as “chrysolites” from Týn nad Vltavou in a lecture by professor Josef Mayer of Prague University, read at a meeting of the Bohemian Scientific Society (Mayer 1788). Zippe (1836) first used the term “moldavite” derived from the town of Moldauthein (Czech: Týn nad Vltavou) - now in Bohemia (the Czech Republic), from where the first described pieces came. OriginMoldavite's bottle-green glass colour led to its being commonly called Bouteillen-stein, and at one time it was regarded as an artificial product, but this view is opposed to the fact that no remains of glassworks are found in the neighbourhood of its occurrence; moreover, pieces of the substance are widely distributed in Middle to Upper Miocene and younger fluvial

Price: 350 USD

Location: Loveland, Colorado

End Time: 2023-12-25T22:24:52.000Z

Shipping Cost: 0 USD