{"product_id":"esng0010","title":"Eisco Quartz - Rock Crystal Specimen (Mineral), Approx. 1\" (3cm)","description":"\u003cul\u003e\n\u003cli\u003eQuartz sample approximately 1\" (3cm) in size\u003c\/li\u003e\n\u003cli\u003eA classic mineral, quartz is useful during lessons on mineral hardness, luster, and fracture\u003c\/li\u003e\n\u003cli\u003ePerfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements\u003c\/li\u003e\n\u003cli\u003eEuhedral crystal expression is perfect for collections\u003c\/li\u003e\n\u003cli\u003eSpecimen comes in clear labeled and barcoded bag for ideal storage\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003eQuartz is one of the most abundant minerals on Earth. The tightly packed framework of silica tetrahedra that make up the quartz crystal give it a relatively high hardness of 7, a complete lack of cleavage planes, and a distinct euhedral crystal habit. This is a must-have mineral for any collection, and can be used to great effect in the classroom as well.\u003c\/div\u003e","brand":"Eisco Labs","offers":[{"title":"Default","offer_id":25088518152,"sku":"ESNG0010","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/ESNG0010_59e330b5-92f8-4129-b40c-cbc137417b93.jpg?v=1759452155","url":"https:\/\/www.thelabstockroom.com\/products\/esng0010","provider":"The Lab Stockroom","version":"1.0","type":"link"}