{"product_id":"3-15ct-brazilian-paraiba-tourmaline-diamond-ring-gubelin","title":"3.15ct Brazilian Paraiba Tourmaline \u0026 Diamond Ring | Gubelin","description":"\u003cdiv\u003eCarat Weight: 3.15 ct. Tourmaline | 76 Diamonds = 5.07cts\u003c\/div\u003e\u003cdiv\u003eColor\/Clarity: Electric Neon Blue \/ Diamonds E-F VS+ (2 MQ GIA)\u003c\/div\u003e\u003cdiv\u003eCertifications: Gubelin and AGL\u003c\/div\u003e\u003cdiv\u003eSize: 6.0\u003c\/div\u003e\u003cdiv\u003eCreator: Spectra Fine Jewelry\u003c\/div\u003e\u003cdiv\u003eMetal: 18K White Gold\u003c\/div\u003e\u003cdiv\u003eWeight: 8.39 grams\u003c\/div\u003e\u003cdiv\u003ePeriod: Contemporary\u003c\/div\u003e\u003cdiv\u003eCondition: New\/Excellent\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eA property of exceptional mineralogical rarity, this high-jewelry masterpiece centers on a remarkable 3.15-carat cushion-shaped Parai­ba tourmaline of definitive Brazilian provenance. The importance of this specimen is marked by the Gubelin Gem Lab, which has honored the stone with a complete, hardcover Gubelin Gemmological Profile book alongside its certificate, a prestigious distinction reserved strictly for museum-tier gems of singular importance. Furthermore, the stone has achieved an \"Excellent\" Gemstone Rating of 89.1 Points, independent validation of its extraordinary visual salience and body color.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe tourmaline exhibits the intensely vibrant, copper- and manganese-bearing \"neon\" blue hue that historically defines the premier, classic deposits of northern Brazil. Under laboratory magnification, the modified brilliant-cut gem displays fine micro-growth tubes characteristic of its premium geological origin.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe center stone is structurally secured within an architectural framework of 5.07 carats of fine white diamonds graded as E-F color and VS+ clarity. This imposing cluster configuration features a continuous mosaic of marquise-cut and round brilliant diamonds, anchored by two prominent GIA-certified marquise-cut diamonds along the shoulders that direct light seamlessly toward the pavilion.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe hand-assembled mounting reflects the absolute pinnacle of contemporary bench-work, executed in solid 18K white gold with a gross weight of 8.39 grams. The undergallery is engineered with an intricate, openwork double-gallery structure that optimizes the light paths entering the gemstone while allowing it to sit elegantly low to the finger. This fine basket tapers into a heavy, multi-row split shank meticulously pave-set with brilliant-cut diamonds. Laser-inscribed internally with its precise component weights, this singular ring represents an important acquisition opportunity for collectors of the world's finest neon gemstones.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eRef. :R1804\u003c\/div\u003e","brand":"Spectra Fine Jewelry","offers":[{"title":"Default Title","offer_id":48470717333763,"sku":"R1804","price":1485000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/9087\/9747\/files\/R1804_2_3811875.jpg?v=1782336325","url":"https:\/\/www.spectrafinejewelry.com\/products\/3-15ct-brazilian-paraiba-tourmaline-diamond-ring-gubelin","provider":"Spectra Fine Jewelry","version":"1.0","type":"link"}