{"product_id":"boracite-6","title":"BORACITE","description":"I am always drawn to Boracite, having once been fortunate enough to be able to experience the 1 km descent underground and 'road' trip around the grid-like series of tunnels which extend out beneath the North Sea in Boulby mine. The Boracite, a magnesium chloro-borate, is a plague to the mining company, rapidly blunting their cutting machines due to its significant hardness (Moh's scale 7 to 7.5) but can appear is several forms and colours. This small cabinet-sized piece from Martin Kershaw's Collection (no. 782) is quite attractive, like a gently branching coralline growth, with glistening pale blue-grey spherules of Boracite coating outwards into cavities. A little Salmon pink\/orange material is probably Hilgardite, but the powdery white central core to the stalactites is not determined. A very fine, and good sized display of this rare borate species.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781478818127,"sku":"CC56440","price":296.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC56440_2dc6e2a5-a66b-416e-b7b0-a8538631b353.jpg?v=1783990584","url":"https:\/\/crystalclassics.co.uk\/products\/boracite-6","provider":"Crystal Classics UK","version":"1.0","type":"link"}