{"product_id":"rough-opal-from-virgin-valley-nevada","title":"Rough Opal in Matrix — Virgin Valley, Nevada","description":"\u003ch4\u003eAbout This Specimen\u003c\/h4\u003e\u003cp\u003eThis rough opal specimen from Virgin Valley, Nevada, features a milky white to pale blue-gray seam running through contrasting tan-brown host material. Its upright profile exposes both translucent opal and rugged matrix textures, with fine surface fractures visible in several areas.\u003c\/p\u003e\u003ch4\u003eSpecimen Details\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral \/ Specimen Type:\u003c\/strong\u003e Rough common opal in matrix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Virgin Valley, Nevada, USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm \u0026amp; Structure:\u003c\/strong\u003e Massive, seam-filling opal within rough host material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Milky white to pale blue-gray opal with cream, tan, and brown matrix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRarity:\u003c\/strong\u003e Common as a mineral material, with added collector interest from the supplied Virgin Valley locality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 5.5–6.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLuster:\u003c\/strong\u003e Waxy to vitreous on exposed opal surfaces; earthy on the host material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e SiO₂·nH₂O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecimen Size:\u003c\/strong\u003e Miniature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.7 × 1.9 × 4.2 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecimen Weight:\u003c\/strong\u003e 14.8 g — mineral only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal \/ Display Weight:\u003c\/strong\u003e 62 g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eAbout Opal\u003c\/h4\u003e\u003cp\u003eOpal is an amorphous, hydrated silica mineraloid rather than a crystalline mineral. It occurs in both precious varieties that display play-of-color and common varieties without that optical effect; this photographed piece appears to be common opal, with no distinct play-of-color visible under the supplied lighting.\u003c\/p\u003e\u003ch4\u003eTraditional \u0026amp; Metaphysical Associations\u003c\/h4\u003e\u003cp\u003eIn crystal and spiritual traditions, opal is associated with creativity, inspiration, emotional expression, and personal reflection. Some collectors use it as a symbolic focus for meditation or intention-setting, while others simply appreciate its soft color and organic patterning. \u003cem\u003eMetaphysical properties are based on traditional beliefs and are provided for cultural and informational purposes; they are not scientifically established or intended as medical advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch4\u003eWhy This Specimen?\u003c\/h4\u003e\u003cp\u003eThe pale opal seam creates a strong visual path through the textured tan matrix, and the narrow upright shape displays well from multiple angles. Its locality and clear contrast between opal and host material make it an approachable example for a regional or systematic collection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eExact specimen pictured.\u003c\/strong\u003e You will receive the exact specimen shown in the photographs.\u003c\/p\u003e","brand":"Mineral Treasury","offers":[{"title":"Default Title","offer_id":53366751887727,"sku":"MT-0039","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/7563\/6335\/files\/virgin-valley-rough-opal-front_03237941-b56f-4738-bad3-170ac2cc417a.jpg?v=1787790580","url":"https:\/\/mineraltreasury.com\/products\/rough-opal-from-virgin-valley-nevada","provider":"Mineral Treasury","version":"1.0","type":"link"}