{"product_id":"aaa-grade-diamond-apophyllite","title":"AAA grade Diamond Apophyllite","description":"\u003cp\u003eDiamond Apophyllite on Blue Chalcedony — AAA Grade Cluster (321g)\u003c\/p\u003e\n\u003cp\u003eA premium, large-format specimen featuring well-formed apophyllite crystals sitting on a textured blue chalcedony matrix.\u003c\/p\u003e\n\u003cp\u003eThe apophyllite shows classic tetragonal crystal growth with sharp pyramidal (“diamond”) terminations and strong vertical striations across the prism faces — a key identifier of this mineral. The crystals are transparent to translucent, allowing light to pass through and reflect internally.\u003c\/p\u003e\n\u003cp\u003eThe base is a layered blue chalcedony (microcrystalline quartz) with a natural drusy surface, creating contrast between the glassy apophyllite and the fine crystalline matrix beneath.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cp\u003e• Primary Minerals:\u003c\/p\u003e\n\u003cp\u003e  Apophyllite – KCa₄Si₈O₂₀(F,OH)·8H₂O\u003c\/p\u003e\n\u003cp\u003e  Chalcedony – SiO₂\u003c\/p\u003e\n\u003cp\u003e• Crystal System:\u003c\/p\u003e\n\u003cp\u003e  Apophyllite – Tetragonal\u003c\/p\u003e\n\u003cp\u003e  Chalcedony – Microcrystalline (Quartz variety)\u003c\/p\u003e\n\u003cp\u003e• Colour:\u003c\/p\u003e\n\u003cp\u003e  Clear to white apophyllite\u003c\/p\u003e\n\u003cp\u003e  Blue-grey chalcedony base\u003c\/p\u003e\n\u003cp\u003e• Transparency:\u003c\/p\u003e\n\u003cp\u003e  Apophyllite – Transparent to translucent\u003c\/p\u003e\n\u003cp\u003e  Chalcedony – Translucent to opaque\u003c\/p\u003e\n\u003cp\u003e• Lustre:\u003c\/p\u003e\n\u003cp\u003e  Apophyllite – Vitreous (glass-like)\u003c\/p\u003e\n\u003cp\u003e  Chalcedony – Waxy to dull\u003c\/p\u003e\n\u003cp\u003eFeature Highlights\u003c\/p\u003e\n\u003cp\u003e• Large, well-defined apophyllite crystal cluster\u003c\/p\u003e\n\u003cp\u003e• Visible growth striations on crystal faces\u003c\/p\u003e\n\u003cp\u003e• Sharp, geometric terminations\u003c\/p\u003e\n\u003cp\u003e• Sparkling drusy chalcedony matrix\u003c\/p\u003e\n\u003cp\u003e• Strong contrast between macro crystals and microcrystalline base\u003c\/p\u003e\n\u003cp\u003e• Natural formation — no treatment or enhancement\u003c\/p\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cp\u003e• Weight: 321 grams\u003c\/p\u003e\n\u003cp\u003e• Size: 8.7 cm x 6.8 cm\u003c\/p\u003e\n\u003cp\u003eGeological \u0026amp; Scientific Notes\u003c\/p\u003e\n\u003cp\u003eApophyllite typically forms in low-temperature hydrothermal environments, often within basalt cavities. Silica-rich fluids deposit minerals layer by layer, allowing crystals to grow freely into open space — which is why pieces like this develop such sharp, complete terminations.\u003c\/p\u003e\n\u003cp\u003eThe chalcedony base forms from colloidal silica, creating the fine-grained structure seen here. The blue tone is caused by light scattering and trace mineral content within the microcrystalline network.\u003c\/p\u003e\n\u003cp\u003eThis combination represents two different silica formation styles: • Macro crystalline growth (apophyllite)\u003c\/p\u003e\n\u003cp\u003e• Microcrystalline silica deposition (chalcedony)\u003c\/p\u003e\n\u003cp\u003eCondition\u003c\/p\u003e\n\u003cp\u003e• Excellent display condition\u003c\/p\u003e\n\u003cp\u003e• Minor natural edge contacts consistent with formation\u003c\/p\u003e\n\u003cp\u003e• Strong overall crystal integrity\u003c\/p\u003e","brand":"Crystal Ballerz","offers":[{"title":"Default Title","offer_id":53820274475349,"sku":null,"price":94.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/9295\/1125\/files\/rn-image_picker_lib_temp_b6e8857f-0e84-42d7-8546-172b1984cdf6.jpg?v=1777916447","url":"https:\/\/crystalballerz.co.uk\/products\/aaa-grade-diamond-apophyllite","provider":"Crystal Ballerz","version":"1.0","type":"link"}