{"product_id":"diamond-apophyllite-on-blue-chalcedony-with-peach-stilbite-calcite-aaa-grade","title":"Diamond Apophyllite on Blue Chalcedony with Peach Stilbite \u0026 Calcite (AAA Grade)","description":"\u003cp\u003eDiamond Apophyllite on Blue Chalcedony with Peach Stilbite \u0026amp; Calcite (AAA Grade)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eOverview\u003cbr\u003eThis multi-mineral specimen showcases highly reflective “diamond” apophyllite crystals set across a soft blue chalcedony base, complemented by peach-toned stilbite blades and a distinct cubic calcite crystal.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe contrast in crystal habits is what makes this piece stand out — sharp, glassy apophyllite points, smooth microcrystalline chalcedony, bladed stilbite formations, and a geometric calcite cube all formed together within the same environment. This combination reflects multiple stages of mineral deposition, making it both visually striking and geologically complex.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eKey Features\u003cbr\u003eMinerals: Apophyllite, Chalcedony (quartz), Stilbite, Calcite\u003cbr\u003eGrade: AAA (high clarity apophyllite, defined crystal structures, strong lustre)\u003cbr\u003eColour:\u003cbr\u003eColourless to pale blue apophyllite\u003cbr\u003eSoft blue chalcedony base\u003cbr\u003ePeach\/orange stilbite\u003cbr\u003eColourless calcite cube\u003cbr\u003eCrystal Systems:\u003cbr\u003eApophyllite: Tetragonal\u003cbr\u003eCalcite: Trigonal (cubic habit visible)\u003cbr\u003eStilbite: Monoclinic\u003cbr\u003eFormation: Multi-phase mineral growth within volcanic cavity\u003cbr\u003eLustre: Vitreous (apophyllite, calcite) to pearly (stilbite)\u003cbr\u003eTransparency: Transparent to translucent\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eDimensions\u003cbr\u003eWeight: 59 grams\u003cbr\u003eSize: 5.5 cm x 4.1 cm\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eGeological \u0026amp; Scientific Notes\u003cbr\u003eThis specimen formed within a volcanic cavity where mineral-rich fluids deposited different minerals over time in distinct stages:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eChalcedony (SiO₂) formed first as a microcrystalline silica base from gel-like silica deposits\u003cbr\u003eApophyllite crystallised later from hydrothermal fluids, forming well-defined tetragonal crystals with high reflectivity\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eStilbite, a zeolite mineral, developed in bladed formations under lower temperature conditions, giving the soft peach colouring\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCalcite (CaCO₃) formed last, producing the cubic crystal through its cleavage structure (despite belonging to the trigonal system)\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe presence of multiple minerals in one piece indicates changing chemical conditions during formation — a key factor that increases both scientific interest and collectability.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWhy This Piece Stands Out\u003cbr\u003eMulti-mineral specimen (4 distinct minerals in one piece)\u003cbr\u003eStrong contrast in crystal shapes: cubic, bladed, and pointed\u003cbr\u003eHigh-lustre “diamond” apophyllite with excellent light reflection\u003cbr\u003eRare combination of blue chalcedony with peach stilbite\u003cbr\u003eVisible calcite cube adding structural uniqueness\u003cbr\u003eAAA grade with clean, well-defined formations\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCare \u0026amp; Handling\u003cbr\u003eHandle carefully — apophyllite and stilbite are delicate\u003cbr\u003eAvoid water exposure (zeolite minerals can degrade over time)\u003cbr\u003eClean using a dry, soft brush only\u003cbr\u003eStore separately to protect crystal edges\u003c\/p\u003e","brand":"Crystal Ballerz","offers":[{"title":"Default Title","offer_id":53803318772053,"sku":null,"price":46.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/9295\/1125\/files\/rn-image_picker_lib_temp_538b10fb-a876-409d-9d49-bc4a73440e21.jpg?v=1777637359","url":"https:\/\/crystalballerz.co.uk\/products\/diamond-apophyllite-on-blue-chalcedony-with-peach-stilbite-calcite-aaa-grade","provider":"Crystal Ballerz","version":"1.0","type":"link"}