{"product_id":"grossular-garnet-cluster-b-natural-mexico-copy","title":"Grossular garnet cluster (C) — natural, Mexico","description":"\u003cp dir=\"ltr\"\u003eGrossular is named after the gooseberry.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe first crystals described were a pale green, and the mineralogist naming them reached for grossularia, the botanical name for the fruit. The name stuck to the whole species. So a deep red garnet like this one is, technically, named after a green berry.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThat happens because grossular's colour is not part of what makes it grossular. The species is defined by its skeleton, calcium and aluminium and silica. Colour comes from whatever trace element happens to have slipped into the structure while it grew. Chromium and vanadium give the intense green of tsavorite. Iron gives the cinnamon of hessonite. Manganese, here, gives red.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eSame mineral in every case. The label on the box changes; the chemistry underneath does not.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eGrossular garnet (Ca₃Al₂(SiO₄)₃), a calcium aluminium silicate\u003cbr\u003e\u003cstrong\u003eCrystal system:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eCubic\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eSierra de Cruces, Sierra Mojada Municipality, Coahuila, Mexico\u003cbr\u003e\u003cstrong\u003eHardness:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e6.5 to 7 on the Mohs scale; hard, but the crystals are brittle at the edges and chip rather than scratch\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e None\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.06 x 3.06 x 2.77 cm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 16.84 g\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eYou will receive the exact piece photographed.\u003c\/p\u003e","brand":"The Crystal Showroom","offers":[{"title":"Default Title","offer_id":58335262277976,"sku":null,"price":27.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4880\/5720\/files\/rgg-c-1.jpg?v=1788097391","url":"https:\/\/thecrystalshowroom.com\/products\/grossular-garnet-cluster-b-natural-mexico-copy","provider":"The Crystal Showroom","version":"1.0","type":"link"}