Description: Description : ChrysopraseLocal Name : krisopalLocation : buton regency, south eastern SulawesiHardness: 7 MohsAge: Permo - Triassic (App.240 million years)Dimension :13.5 x 11 x 6.4 cmWeight : 912 grGeology : Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase. (However, the term prase is also used to describe chlorite-included quartz, and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.)Chrysoprase is cryptocrystalline, which means that it is composed of crystals so fine that they cannot be seen as distinct particles under normal magnification. This sets it apart from rock crystal, amethyst, citrine, and the other varieties of crystalline quartz. Other members of the cryptocrystalline silica family include agate, carnelian, and onyx. Unlike many non-transparent silica minerals, it is the color of chrysoprase, rather than any pattern of markings, that makes it desirable. The word chrysoprase comes from the Greek χρυσός chrysos meaning 'gold' and πράσινον prasinon, meaning 'green'.Unlike emerald which owes its green color to the presence of chromium, the color of chrysoprase is due to trace amounts of nickel compounds in the form of very small inclusions. The nickel reportedly occurs as different silicates, like kerolite or pimelite (not NiO mineral, bunsenite, as was reported before). Chrysoprase results from the deep weathering or lateritization of nickeliferous serpentinites or other ultramafic ophiolite rocks. In the Australian deposits, chrysoprase occurs as veins and nodules with brown goethite and other iron oxides in the magnesite-rich saprolite below an iron and silica cap.As with all forms of chalcedony, chrysoprase has a hardness of 6–7 on the Mohs hardness scale and a conchoidal fracture like flint.The best known sources of chrysoprase are Indonesia, Queensland, Western Australia, Haneti Tanzania, Germany, Poland, Russia, Arizona, California, and Brazil. Deposits in central Tanzania have been in constant production since 1986. The chrysoprase and nickel silicate ore deposit in Szklary, Lower Silesia, Poland, was probably the biggest European chrysoprase occurrence and possibly also the biggest in the world Policy Shipping : Items will be shipped within 1 to 3 working days after payment received. Store requires up to 3 business days to process your order. Thank you for your understanding and patience. If you did not receive your goods in the expected time, please contact us first, and we'll solve the problem at once. Payment： Now the eBay platform is unified to manage payment services through Payoneer. Safer, more convenient and faster. Buyer Feedback： We thanks every ebayers' positive feedback and we will leave feedback to you for orders which have completed and have left positive feedback to us. Please contact us before leaving any negative or neutral feedback, we would like the opportunity to correct any problems. If you have any other questions, please don't hesitate to ask. Be sure to follow our store to keep up with our amazing deals! About Tax 1.Customs Duty is Obligation And Liability Of A Citizen in Your Country, So Buyer Should Be Responsible For AnyTax And Custom Duty Incurred. 2.Please Double Check Your Local Customs Policy Carefully Before Purchase. Or, We Will Not Be Responsible For Any Failure Delivery Related Destination Customs Issue.
Price: 200 USD
Location: Bandung
End Time: 2024-02-18T06:46:05.000Z
Shipping Cost: 39 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Country/Region of Manufacture: Indonesia
Modified Item: No
