{"product_id":"pearceite","title":"PEARCEITE","description":"Pearceite is one of the four so-called \"ruby silvers\", Pearceite, Pyrargyrite, Proustite and Miargyrite, discovered in 1896 and named for Dr Richard Pearce (1837–1927), a Cornish–American chemist and metallurgist from Denver, Colorado.  Going by my experience here at Crystal Classics and considering the number of each of these species which have passed through my hands, I would certainly say Pearceite is the rarer of the four.   Chemically it is the most complex of the four Cu(Ag,Cu)6Ag9As2S and in this specimens forms well developed, metallic silver-black crystals with snow white Calcite on a metallic bronze speckled matrix.  This is an excellent miniature of this rare silver sulphosalt.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781195014479,"sku":"CC27703","price":2220.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC27703_06142156-aa7f-4a4d-b3da-10075ca1fa8d.jpg?v=1783981245","url":"https:\/\/crystalclassics.co.uk\/products\/pearceite","provider":"Crystal Classics UK","version":"1.0","type":"link"}