PYRITE INCLUDED QUARTZ CABOCHON Polished Gemstone Jewelry Crystal BRAZIL

Vendu Voir des articles similaires EUR 35,93 EUR 30,54 Achat immédiat ou Offre directe, EUR 11,09 Livraison, 30-Jour Retours, Garantie client eBay
Vendeur: callistodesigns ✉️ (42.908) 99.7%, Lieu où se trouve: Tucson, Arizona, US, Lieu de livraison: WORLDWIDE, Numéro de l'objet: 392071323620 PYRITE INCLUDED QUARTZ CABOCHON Polished Gemstone Jewelry Crystal BRAZIL. This specimen weighs 10.50 carats. It measures 12 mm x 12 mm x 7 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. Hi there. I am selling this A ++ High Grade Clear Quartz faceted gemstone crystal with an AMAZING Pyrite inclusions. It is from Brazil where it was cut and polished. If you have any questions, do not hesitate to ask me. Thanks so much for visiting my listings and have a great day! The following is information about mineral inclusions from wikipedia: Inclusion (mineral) From Wikipedia, the free encyclopedia   (Redirected from Mineral inclusion) Jump to navigationJump to search This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2017) (Learn how and when to remove this template message) Dark inclusions of aegerine in light-green apatite Sketch showing different shapes of inclusions In mineralogy, an inclusion is any material that is trapped inside a mineral during its formation. In gemology, an inclusion is a characteristic enclosed within a gemstone, or reaching its surface from the interior. According to Hutton's law of inclusions, fragments included in a host rock are older than the host rock itself. Contents  1 Mineralogy 2 Gemology 3 Metallurgy 4 References Mineralogy Inclusions are usually other minerals or rocks, but may also be water, gas or petroleum. Liquid or vapor inclusions are known as fluid inclusions. In the case of amber it is possible to find insects and plants as inclusions. The analysis of atmospheric gas bubbles as inclusions in ice cores is an important tool in the study of climate change. A xenolith is a pre-existing rock which has been picked up by a lava flow. Melt inclusions form when bits of melt become trapped inside crystals as they form in the melt. Gemology An insect encased in amber, has gas bubbles protruding from its thorax and head. The term three phase relates to the three phases of matter, solid, liquid, and gas. This is a three phase inclusion in rock crystal quartz. The solid is a black material that is of bituminous origin. The liquid encased is petroleum, and the gas bubble is methane. Inclusions are one of the most important factors when it comes to gem valuation. In many gemstones, such as diamonds, inclusions affect the clarity of the gem, diminishing the value. In some gems, however, such as star sapphires, the inclusion actually increases the value of the gem. Many colored gemstones, such as amethyst, emerald, and sapphire, are expected to have inclusions, and the inclusions do not greatly affect the stone's value. Colored gemstones are categorized into three types as follows: Type I colored gems include gems with very little or no inclusions. They include aquamarines, topaz and zircon. Type II colored gems include those that often have a few inclusions. They include sapphire, ruby, garnet and spinel. Type III colored gems include those that almost always have inclusions. Gems in this category include emerald and tourmaline. Clear gemstone with metallic inclusion.   Peridot with milky inclusion.   Natural ruby with inclusions. Metallurgy The term "inclusion" is also used in the context of metallurgy and metals processing. During the melt stage of processing hard particles such as oxides can enter or form in the liquid metal which are subsequently trapped when the melt solidifies. The term is usually used negatively such as when the particle could act as a fatigue crack nucleator or as an area of high stress intensity.
  • Mineral: Quartz / Pyrite
  • Weight: 10.50 carats
  • Size: 12mm x 12mm x 7mm

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