FACETED MOLDAVITE Meteorite Tektite Mineral Specimen Natural Gem US Seller IMCA#

Description: This specimen weighs 1.40 grams. It measures 20 mm x 11 mm x 5 mm. I offer a shipping discount for customers who combine their payments for multiple purchases into one payment! The discount is regular shipping price for the first item and just 50 cents for each additional item! To be sure you get your shipping discount just make sure all the items you want to purchase are in your cart. Auctions you win are added to your cart automatically. For any "buy it now" items or second chance offers, be sure to click the "add to cart" button, NOT the "buy it now" button. Once all of your items are in your cart just pay for them from your cart and the combined shipping discount should be applied automatically. I offer a money back guarantee on every item I sell. If you are not 100% happy with your purchase just send me a message to let me know and I will buy back the item for your full purchase price. This is a very nice, and highly translucent moldavite tektite gemstone. It has been faceted on the front and left natural on the back for an amazing looking gemstone ready to be set in a bezel and made into a beautiful piece of jewelry! If you don't know what moldavite is well then, get ready to be amazed! This is the product of an ancient meteorite impact 15 million years ago, in the middle of what is now the Czech Republic. The earth at the impact site was turned molten by the impact and thrown into the atmosphere, cooling as it fell and solidifying into this beautiful, glassy green tektite. It is highly collectible and more and more rare all the time. It it getting more difficult to find, especially in pieces as clear and high quality as this one. Please know that when you buy and item from me it is GUARANTEED TO BE AUTHENTIC! I am also a member of the IMCA (International Meteorite Collectors Association), member #7446, so you can trust that the authenticity of this piece is guaranteed. The IMCA is a highly prestigious organization that is even difficult to attain membership and it is guarantees the genuineness and authenticity of meteorites and meteorite related items that I sell. If you have any questions, do not hesitate to ask me. Thanks so much for visiting my listing and have a great day! If you purchase from me you should know that the authenticity of this meteorite is guaranteed! I am a member of the IMCA or the International Meteorite Collector's Association. This is an organization that is a check and balance of those who collect, trade and sell meteorites. You can only join this organization by having the utmost integrity. You must to have two references from existing members to get in and a good reputation. Members of this organization maintain a high standard by monitoring each others' activities for accuracy and honesty. It is every IMCA member's responsibility and pleasure to offer help and assistance to fellow members in order to ensure specimens are genuine. It is not wise to purchase meteorites on Ebay or other sources from those who are not IMCA members. This is a very tight-knit community made up of meteorite hunters, dealers, collectors, and scientists who look out for each other to make sure that the meteorites offered to the public are authentic and genuine. I encourage you to visit the IMCA website and get more information on what being a member means, and how your purchases from its members are guaranteed. IMCA Member #7446 Below is some information about moldavite: MoldaviteFrom Wikipedia, the free encyclopedia Moldavite from Dobrkovská LhotkaGeneralCategoryGlassFormula(repeating unit)SiO2(+Al2O3)Crystal systemAmorphousIdentificationColorOlive greenMohs scale hardness5.5[1] to 7[2]LusterVitreousDiaphaneityOpaque, translucent, transparentSpecific gravity2.32 to 2.38Optical propertiesIsotropicRefractive index1.48 to 1.54BirefringenceNonePleochroismAbsentDispersionNoneReferences[1]Moldavite (Czech: vltavín) is a forest green, olive green or blue greenish vitreous silica projectile glass formed by a meteorite impact in southern Germany (Nördlinger Ries Crater)[3] that occurred about 15 million years ago.[4] It is a type of tektite and a gemstone.[5] Early studiesMoldavite was introduced to the scientific public for the first time in 1786 as "chrysolites" from Týn nad Vltavou in a lecture by 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 Moldau (Vltava) river in Bohemia (the Czech Republic), from where the first described pieces came.[6] OriginIn 1900, Franz Eduard Suess pointed out that the gravel-size moldavites exhibited curious pittings and wrinkles on the surface, which could not be due to the action of water, but resembled the characteristic markings on many meteorites. He attributed the material to a cosmic origin and regarded moldavites as a special type of meteorite for which he proposed the name of tektite. Moldavites' highly textured surfaces are now known to be the result of pervasive etching by naturally occurring CO2 and humic acids present in groundwater.[7] Because of their extremely low water content and chemical composition, the current consensus among earth scientists is that moldavites were formed about 14.7 million years ago during the impact of a giant meteorite in the present-day Nördlinger Ries crater. The impact melted material and launched it into the air. As the material was airborne, it cooled and solidified. Currently, moldavites have been found in an area that includes southern Bohemia, western Moravia, the Cheb Basin (northwest Bohemia), Lusatia (Germany), and Waldviertel (Austria).[8] Isotope analysis of samples of moldavites have shown a beryllium-10 isotope composition similar to the composition of Australasian tektites (australites) and Ivory Coast tektites (ivorites).[9] This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed.Find sources: "Moldavite" – news · newspapers · books · scholar · JSTOR (January 2018) (Learn how and when to remove this template message)Most moldavites are from South Bohemian localities, with just a few found in South Moravian localities. Rare moldavites have been found in the Lusatian area (near Dresden), Cheb basin area (West Bohemia) and Northern Austria (near Radessen). Principal occurrences of moldavites in Bohemia are associated with Tertiary sediments of the České Budějovice and Třeboň basins. The most prominent localities are concentrated in a NW-SE strip along the western margin of the České Budějovice Basin. The majority of these occurrences are bound to the Vrábče Member and Koroseky Sandy Gravel. Prominent localities in the Třeboň Basin are bound to gravels and sands of the Domanín Formation. In Moravia, moldavite occurrences are restricted to an area roughly bounded by the towns of Třebíč, Znojmo and Brno. The colour of Moravian moldavites usually differs from their Bohemian counterparts, as it tends to be brownish. Taking into account the number of pieces found, Moravian localities are considerably less productive than the Bohemian ones; however, the average weight of the moldavites found is much higher. The oldest (primary) moldavite-bearing sediments lie between Slavice and Třebíč. The majority of other localities in southern Moravia are associated with sediments of Miocene as well as Pleistocene rivers that flowed across this area more or less to the southeast, similar to the present streams of Jihlava, Oslava and Jevišovka. PropertiesThe chemical formula of moldavite is SiO2(+Al2O3). Its properties are similar to those of other types of glass, and reported Mohs hardness varies from 5.5[1] to 7.[2] Moldavite can be transparent or translucent with a mossy green color, with swirls and bubbles accentuating its mossy appearance. Moldavites can be distinguished from most green glass imitations by observing their worm-like schlieren. UseMoldavites were discovered by prehistoric people in the Czech Republic and Austria and were used to make flaked tools. Some of the worked moldavites date to the Aurignacian period of the Upper Paleolithic, approximately 43,000 to 26,000 years before the present.[10] In the modern world, moldavites are often used, rough or cut, as semi-precious stones in jewelry. They have purported metaphysical qualities and are often used in crystal healing.

Price: 139.99 USD

Location: Tucson, Arizona

End Time: 2024-12-14T05:02:44.000Z

Shipping Cost: 8.95 USD