{"product_id":"large-citrine-cluster-heat-treated-4kg","title":"Large Citrine Cluster (heat treated) with calcite - 4Kg!","description":"\u003cp\u003e\u003cstrong\u003eThe piece pictured is what you'll receive\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eLarge Citrine Cluster with calcite– 4kg\u003c\/h4\u003e\n\u003cp\u003eA truly impressive centrepiece specimen, this 4kg citrine cluster commands attention with its warm golden-amber points rising from the matrix. Heat treated from amethyst to produce its characteristic sunny hues, this cluster retains all the textural complexity of its natural origin — interlocking terminations, large white calcite inclusion, and a satisfying weight that speaks to its geological age. Whether displayed in a living space, retail setting, or as the anchor of a collection, this is a statement piece in every sense.\u003c\/p\u003e\n\u003ch4\u003ePhysical Properties\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCitrine (heat-treated Amethyst)\u003c\/strong\u003e — Chemical formula: SiO₂ | Hardness: 7 Mohs | Crystal system: Trigonal | Lustre: Vitreous | Transparency: Transparent to translucent | Colour: Golden yellow to amber-orange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcite\u003c\/strong\u003e — Chemical formula: CaCO₃ | Hardness: 3 Mohs | Crystal system: Trigonal | Lustre: Vitreous to resinous | Transparency: Transparent to translucent | Colour: White to cream\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eGeology \u0026amp; Formation\u003c\/h4\u003e\n\u003cp\u003eNatural citrine is rare; the vast majority of commercially available citrine — including this specimen — is produced by heat-treating amethyst, a process that mimics the natural oxidation of iron impurities within quartz that occurs deep in the earth. The source material is predominantly mined in Brazil, where large amethyst geodes form within basalt cavities. The accompanying calcite developed concurrently within the same hydrothermal environment, crystallising from calcium-rich fluids to create the pale matrix intergrown with the quartz points.\u003c\/p\u003e\n\u003ch4\u003eCrystal Properties\u003c\/h4\u003e\n\u003cp\u003eCitrine is widely known as the “merchant’s stone” and is associated with abundance, positivity, and the manifestation of goals. It is said to carry the energy of the sun — warming, energising, and uplifting — and is one of the few crystals traditionally associated with not retaining negative energy. Calcite complements this with its reputation for amplifying energy and supporting clarity of thought and emotional openness.\u003c\/p\u003e\n\u003ch4\u003eSpecimen Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions: \u003c\/strong\u003eApprox. 220 x 195 x 90mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Citrine Cluster with calcite \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Heat treated (amethyst to citrine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Brazil\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Rock \u0026 Fossil Shop","offers":[{"title":"Default Title","offer_id":54680632656205,"sku":"RMDBE","price":175.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/0120\/7117\/files\/Citrine_Cluster_Heat_Treated_with_Calcite_Large_4kg_1_RMDBE.jpg?v=1788806715","url":"https:\/\/www.rockandfossilshop.co.uk\/products\/large-citrine-cluster-heat-treated-4kg","provider":"The Rock \u0026 Fossil Shop","version":"1.0","type":"link"}