{"product_id":"dumortierite-in-quartz-73mm-round-94800","title":"Dumortierite in Quartz | 7.3mm Round | Natural Gemstone from Brazil |  QU552","description":"\u003cp\u003eDumortierite in Quartz is a natural inclusion specimen in which dense concentrations of dumortierite — a fibrous aluminum borosilicate mineral — become permanently encapsulated within a quartz host during crystal growth deep within metamorphic and pegmatite environments. Brazil is the world's foremost source for high-quality dumortierite in quartz, producing material with a richness and density of blue patterning that consistently surpasses material from other localities. What sets exceptional Brazilian specimens apart is the dramatic contrast between the opaque, intensely colored dumortierite fibers and the surrounding quartz matrix — ranging from bold, graphic clusters to intricate, almost painterly compositions that are entirely unique to each stone.\u003c\/p\u003e\n\u003cp\u003eThis 7.3 x 4.2mm faceted round weighs 1.18 carats and delivers a striking face-up appearance in which the dumortierite patterning reads boldly through the polished facets of the transparent quartz host. Cutting dumortierite in quartz into a faceted round is a notable lapidary achievement — the round brilliant format demands precise symmetry and clean facet execution, and working with inclusion material introduces unpredictability that requires both skill and careful rough selection. The calibrated 7.3mm diameter makes this stone setting-compatible with standard round findings and bezels, a practical advantage that is uncommon for a stone of this character and rarity. The combination of a wearable calibrated size, faceted brilliance, and the deeply patterned dumortierite interior makes this an outstanding choice for a designer seeking a stone that is simultaneously versatile and visually extraordinary.\u003c\/p\u003e\n\u003cp\u003eDETAILS\u003cbr\u003e\nOrigin: Brazil\u003cbr\u003e\nSpecies: Quartz\u003cbr\u003e\nVariety: Dumortierite in Quartz (Dumortierite Quartz)\u003cbr\u003e\nCut: Faceted Round\u003cbr\u003e\nSize: 7.3 x 4.2mm\u003cbr\u003e\nWeight: 1.18 ct\u003cbr\u003e\nSold: Individually\u003cbr\u003e\nTreatment: None\u003cbr\u003e\nHardness: 7 (Mohs)\u003cbr\u003e\nRefractive Index: 1.544 – 1.553\u003c\/p\u003e\n\u003cp\u003eMaterials: Quartz, Dumortierite.\u003c\/p\u003e","brand":"Gem Enthusiast","offers":[{"title":"Default Title","offer_id":47611182481595,"sku":"QU552","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0639\/8214\/1627\/files\/dumortierite-in-quartz-73mm-round-natural-gemstone-from-brazil-qu552-4248487.jpg?v=1774719250","url":"https:\/\/gementhusiast.shop\/products\/dumortierite-in-quartz-73mm-round-94800","provider":"Gem Enthusiast","version":"1.0","type":"link"}