{"product_id":"auction-win-7233d595-6f9b-4d1e-8e37-6e73da9f21f2","title":"Auction Win: The Elbaite “Sandwich” (vein!)","description":"\u003cp\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Dara-e-Pech pegmatite field, Dara-e-Pech District, Kunar, Afghanistan\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e Small Cabinet - 7.5 × 4.8 × 2.7 cm\u003c\/p\u003e\n\u003cp\u003eHighly unusual, we have a portion of Tourmaline Vein that has Elbaite crystals completely filling the space between two layers of matrix. There is minor Chalcedony growth on a few exposed terminations. \u003cbr\u003e\u003cbr\u003eElbaite is a lithium-rich borosilicate mineral in the tourmaline group, with formula Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH). It was named for the island of Elba, Italy, and first described from that type locality.\u003cbr\u003e\u003cbr\u003eThe Dara-e-Pech pegmatite field is in the Dara-e-Pech District of Kunar, Afghanistan, within the Nuristan rare-melt pegmatite belt. It is geologically notable for Be-Nb-Ta-Li-rich pegmatites hosted in the Early Cretaceous Nilau igneous complex, and for pegmatite varieties that include beryl-bearing and spodumene-bearing bodies. Collectors know the field for fine crystals of morganite beryl, elbaite, kunzite, gemmy aquamarine, bi-colored tourmaline, fluorapatite, and topaz. It remains an important Afghan source for classic gem pegmatite specimens.\u003c\/p\u003e","brand":"Crystal Castle","offers":[{"title":"Default Title","offer_id":48770279538843,"sku":null,"price":11.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0336\/3012\/6217\/files\/962f08be-d9b5-46c9-a6ac-131a6d54cffa.jpg?v=1781485206","url":"https:\/\/www.overtonfamilyjewels.com\/products\/auction-win-7233d595-6f9b-4d1e-8e37-6e73da9f21f2","provider":"OFJ's Crystal Castle","version":"1.0","type":"link"}