{"product_id":"heat-treated-citrine-2","title":"Heat treated Citrine","description":"\u003cp\u003eHeat-Treated Citrine Quartz Freeform – Polished Flame with Internal Structures\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThis polished citrine quartz freeform is a compact yet visually rich display piece, featuring soft yellow to golden tones and a detailed internal structure revealed through a high-gloss finish.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe colour in this specimen has been produced through heat treatment of iron-bearing quartz. When quartz containing trace iron is exposed to elevated temperatures, the iron undergoes a change in oxidation state, resulting in the yellow colour associated with citrine.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eCarved into a smooth flame-shaped freeform, the piece has a stable base and gently curved surfaces that enhance light interaction. These polished faces act as natural lenses, allowing light to travel through the crystal and illuminate internal fractures, inclusions, and growth features.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWithin the stone, fine internal veils, scattered mineral inclusions, and subtle fracture planes create depth and movement. These natural features formed during crystal growth and are preserved through the polishing process, giving each angle a different visual profile.\u003cbr\u003eThe combination of warm colour, clarity variation, and internal texture makes this a strong display piece despite its smaller size.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e🔍 Key Features\u003cbr\u003eMaterial: Heat-Treated Quartz (Citrine)\u003cbr\u003eFormula: SiO₂\u003cbr\u003eColour: Pale yellow → golden\u003cbr\u003eCause of Colour: Iron impurities altered by heat treatment\u003cbr\u003eTransparency: Translucent to semi-transparent\u003cbr\u003eLustre: Vitreous (glassy)\u003cbr\u003eCrystal System: Trigonal\u003cbr\u003eFormation: Polished freeform (carved from natural quartz)\u003cbr\u003eFinish: High polish\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e📏 Dimensions\u003cbr\u003eSize: 7 cm x 3.4 cm\u003cbr\u003eWeight: 63 grams\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e🧪 Geological \u0026amp; Scientific Notes\u003cbr\u003eQuartz forms in silica-rich environments such as hydrothermal veins and volcanic cavities. Trace elements, particularly iron, are responsible for colour variations across quartz varieties.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eIn this specimen, heat treatment alters iron centres within the crystal lattice, producing the yellow coloration. This mimics processes that can occur naturally underground under elevated temperatures.\u003cbr\u003eInternal fractures and inclusions are a normal part of quartz growth. These structures interact with light, creating depth and subtle optical effects when viewed from different angles.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e🧼 Care Information\u003cbr\u003eClean with lukewarm water and a soft cloth\u003cbr\u003eAvoid chemicals and ultrasonic cleaners\u003cbr\u003eStore separately to prevent scratches\u003cbr\u003eHandle carefully to avoid edge chips\u003c\/p\u003e","brand":"Crystal Ballerz","offers":[{"title":"Default Title","offer_id":53756056011093,"sku":null,"price":10.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/9295\/1125\/files\/rn-image_picker_lib_temp_e6b618c3-5eb9-4d94-baa2-6b55e47967de.jpg?v=1776966574","url":"https:\/\/crystalballerz.co.uk\/products\/heat-treated-citrine-2","provider":"Crystal Ballerz","version":"1.0","type":"link"}