{"product_id":"aaa-diamond-apophyllite-on-blue-chalcedony-with-red-heulandite","title":"AAA Diamond Apophyllite on Blue Chalcedony with Red Heulandite","description":"\u003cp\u003eAAA Diamond Apophyllite on Blue Chalcedony with Red Heulandite\u003c\/p\u003e\n\u003cp\u003eOverview\u003c\/p\u003e\n\u003cp\u003eThis large, high-grade specimen features a dense formation of highly reflective “diamond” apophyllite crystals set within a blue chalcedony-lined cavity, enhanced by distinct red heulandite inclusions throughout the formation.\u003c\/p\u003e\n\u003cp\u003eThe contrast between the sharp, glassy apophyllite crystals, the smooth blue chalcedony base, and the warm red tones of heulandite creates a visually layered and mineralogically complex display piece. Cut into a freestanding form, the internal crystal structure is fully exposed, revealing multiple stages of mineral growth within a single specimen.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cp\u003eMinerals: Apophyllite, Chalcedony (Quartz), Heulandite (Zeolite group)\u003c\/p\u003e\n\u003cp\u003eGrade: AAA (high crystal density, strong lustre, well-defined formations)\u003c\/p\u003e\n\u003cp\u003eColour:\u003c\/p\u003e\n\u003cp\u003eColourless to pale blue apophyllite\u003c\/p\u003e\n\u003cp\u003eBlue-grey chalcedony base\u003c\/p\u003e\n\u003cp\u003eRed heulandite inclusions\u003c\/p\u003e\n\u003cp\u003eCrystal Systems:\u003c\/p\u003e\n\u003cp\u003eApophyllite: Tetragonal\u003c\/p\u003e\n\u003cp\u003eHeulandite: Monoclinic\u003c\/p\u003e\n\u003cp\u003eFormation: Multi-phase mineral growth within a volcanic cavity\u003c\/p\u003e\n\u003cp\u003eLustre: Vitreous (apophyllite), pearly to vitreous (heulandite)\u003c\/p\u003e\n\u003cp\u003eTransparency: Transparent to translucent\u003c\/p\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cp\u003eWeight: 323 grams\u003c\/p\u003e\n\u003cp\u003eSize: 9 cm x 5.5 cm\u003c\/p\u003e\n\u003cp\u003eGeological \u0026amp; Scientific Notes\u003c\/p\u003e\n\u003cp\u003eThis specimen formed in a volcanic cavity through multiple stages of mineral deposition:\u003c\/p\u003e\n\u003cp\u003eChalcedony (SiO₂) formed first, lining the cavity as a microcrystalline silica layer\u003c\/p\u003e\n\u003cp\u003eApophyllite crystallised from hydrothermal fluids, forming sharp, reflective tetragonal crystals\u003c\/p\u003e\n\u003cp\u003eHeulandite, a zeolite mineral, formed later under changing temperature and chemical conditions, producing the distinctive red inclusions visible throughout the piece\u003c\/p\u003e\n\u003cp\u003eThe presence of both apophyllite and heulandite is characteristic of zeolite mineral environments, where shifting fluid chemistry allows multiple minerals to crystallise sequentially within the same space.\u003c\/p\u003e\n\u003cp\u003eWhy This Piece Stands Out\u003c\/p\u003e\n\u003cp\u003eLarge, freestanding display specimen\u003c\/p\u003e\n\u003cp\u003eMulti-mineral composition (apophyllite + chalcedony + heulandite)\u003c\/p\u003e\n\u003cp\u003eStrong contrast between colourless crystals and red inclusions\u003c\/p\u003e\n\u003cp\u003eHigh-lustre “diamond” apophyllite with excellent light reflection\u003c\/p\u003e\n\u003cp\u003eDense internal crystal structure with depth and texture\u003c\/p\u003e\n\u003cp\u003eAAA grade with clean, well-balanced formation\u003c\/p\u003e\n\u003cp\u003eCare \u0026amp; Handling\u003c\/p\u003e\n\u003cp\u003eHandle carefully — zeolite minerals can be delicate\u003c\/p\u003e\n\u003cp\u003eAvoid prolonged water exposure\u003c\/p\u003e\n\u003cp\u003eClean with a dry, soft brush only\u003c\/p\u003e\n\u003cp\u003eStore\/display in a low-contact area\u003c\/p\u003e","brand":"Crystal Ballerz","offers":[{"title":"Default Title","offer_id":53803368579413,"sku":null,"price":96.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/9295\/1125\/files\/rn-image_picker_lib_temp_71500d24-ee21-48d2-b96b-06931d4f8e33.jpg?v=1777638556","url":"https:\/\/crystalballerz.co.uk\/products\/aaa-diamond-apophyllite-on-blue-chalcedony-with-red-heulandite","provider":"Crystal Ballerz","version":"1.0","type":"link"}