{"title":"Geodes \u0026 Nodules","description":"\u003cp\u003eExplore geodes and mineral nodules featuring naturally formed cavities, crystal-lined interiors, and distinctive rounded formations. Browse individually photographed specimens from localities around the world.\u003c\/p\u003e","products":[{"product_id":"rough-opal-with-polished-face-virgin-valley-nevada","title":"Rough Opal with Polished Face – Virgin Valley, Nevada","description":"\u003ch4\u003eAbout This Specimen\u003c\/h4\u003e\u003cp\u003eThis rough opal specimen from Virgin Valley, Nevada, has a broad polished top that reveals milky white opal within a contrasting tan-brown natural exterior. Subtle pale blue-gray margins add definition to the exposed opal, while fine hairline fractures remain visible across the polished surface.\u003c\/p\u003e\u003ch4\u003eSpecimen Details\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral \/ Specimen Type:\u003c\/strong\u003e Rough opal mineral specimen with a polished face\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 to nodular rough material with a polished top surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Milky white opal with faint pale blue-gray margins in a tan-brown rough exterior; no distinct play-of-color is evident in the photographs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRarity:\u003c\/strong\u003e Common to uncommon; opal is widespread, while attributed Virgin Valley material offers added locality interest\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 the polished face; dull to earthy on the rough exterior\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 Toenail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3.8 × 2.3 × 3.5 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecimen Weight:\u003c\/strong\u003e 29 g — mineral only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal \/ Display Weight:\u003c\/strong\u003e 28.9 g, seller-reported; verification recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay Preparation:\u003c\/strong\u003e Mounted in a 2 × 2 × 2 inch display box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eAbout Opal\u003c\/h4\u003e\u003cp\u003eOpal is an amorphous, hydrated form of silica rather than a mineral with an ordered crystal structure. Its composition is written as SiO₂·nH₂O, and its Mohs hardness typically ranges from 5.5 to 6.5. Opal may be transparent through opaque and can occur with or without play-of-color; this specimen presents a milky, non-play-of-color appearance in the supplied photographs.\u003c\/p\u003e\u003ch4\u003eTraditional \u0026amp; Metaphysical Associations\u003c\/h4\u003e\u003cp\u003eIn crystal and spiritual traditions, opal is often associated with creativity, inspiration, emotional expression, and intention-setting. Some collectors use it as a symbolic focus for meditation or simply appreciate its soft color and organic appearance as a contemplative display piece. \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 polished white exposure creates a strong visual contrast with the rugged tan-brown exterior while preserving the character of the original rough material. Its upright presentation and protective display box make it an accessible locality specimen for a shelf or compact mineral cabinet.\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":53289573450095,"sku":"MT-0001","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/7563\/6335\/files\/virgin-valley-rough-opal-front.jpg?v=1787782005"},{"product_id":"pink-amethyst-geode-choique-mine-argentina","title":"Pink Amethyst Geode – Choique Mine, Argentina","description":"\u003ch4\u003eAbout This Specimen\u003c\/h4\u003e\u003cp\u003eThis miniature pink amethyst geode from the Choique Mine in Argentina presents an open cavity filled with pale blush and peach-pink quartz crystals. Its sparkling interior contrasts attractively with a creamy-white rim and rugged rust-brown exterior, while the upright mounting highlights the geode-like opening.\u003c\/p\u003e\u003ch4\u003eSpecimen Details\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMineral \/ Specimen Type:\u003c\/strong\u003e Pink amethyst geode; quartz variety\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Choique Mine, Pehuenches Department, Neuquén Province, Argentina\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm \u0026amp; Structure:\u003c\/strong\u003e Open geode fragment with drusy quartz and short prismatic crystalline aggregates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Pale blush to peach pink crystals with colorless-to-milky areas, a creamy-white rim, and rust-brown exterior matrix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRarity:\u003c\/strong\u003e Uncommon as a locality-specific pink quartz variety, although quartz itself is common\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMohs Hardness:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLuster:\u003c\/strong\u003e Vitreous on crystal faces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e SiO₂\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 3.8 × 1.7 × 4.7 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecimen Weight:\u003c\/strong\u003e 34.9 g — mineral only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal \/ Display Weight:\u003c\/strong\u003e 84.3 g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eAbout Pink Amethyst\u003c\/h4\u003e\u003cp\u003ePink amethyst is a collector and trade name for pink-colored quartz, the same mineral species as traditional purple amethyst. Quartz crystallizes in the trigonal system, has a Mohs hardness of 7, and is composed of silicon dioxide; pink coloration in material sold under this name is generally associated with iron-bearing inclusions or related color centers.\u003c\/p\u003e\u003ch4\u003eTraditional \u0026amp; Metaphysical Associations\u003c\/h4\u003e\u003cp\u003eIn crystal traditions, pink amethyst is associated with calm reflection, compassion, emotional balance, and gentle intention-setting. It may be selected as a meditation focus or displayed as a symbolic reminder of patience and kindness. \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 upright cavity gives this small specimen strong display presence, while varied crystal sizes create depth and lively reflections across the soft pink interior. Its natural brown exterior provides an appealing contrast and preserves the geode's rugged character.\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":53405787652463,"sku":"MT-0080","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/7563\/6335\/files\/pink-amethyst-geode-front.jpg?v=1788199063"}],"url":"https:\/\/mineraltreasury.com\/collections\/geodes-mineral-nodules.oembed","provider":"Mineral Treasury","version":"1.0","type":"link"}