{"title":"Boulder Opal Cabochons","description":"\u003cp\u003e\u003cstrong\u003eDiscover the unique beauty of boulder opal cabochons.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFormed within its natural host rock, boulder opal displays vibrant color play combined with earthy patterns. The cabochon cut enhances both the opal and its natural matrix, creating a truly one-of-a-kind gemstone.\u003c\/p\u003e\n\u003cp data-start=\"2398\" data-end=\"2454\"\u003e\u003cstrong\u003eA gemstone where nature creates the design within stone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e","products":[{"product_id":"natural-yellow-and-blue-winton-matrix-boulder-opal-16-91-ct-free-form-unheated-certified-by-ngb","title":"Natural yellow and blue Winton Matrix Boulder Opal - 16.91 ct - free form - unheated - certified by NGB","description":"\u003cp\u003eNatural yellow and blue Winton Matrix Boulder Opal - 16.91 ct - free form cabochon - unheated - queensland \u003cbr\u003eThe striking combination of yellow and blue in this Natural Matrix Boulder Opal, weighing 16.91 ct, is a testament to the beauty and rarity of this gem. Sourced from Queensland, this free form cabochon is unheated and Natural Gems Belgium guaranteeing its natural and authentic qualities. As a collector's item, this opal radiates luxury and sophistication, making it a valuable addition to any jewelry collection.\u003c\/p\u003e\n\u003cp\u003eNatural Gems Belgium Colored Stone Certification : \u003ca href=\"https:\/\/naturalgemsbelgium.shop\/blogs\/info-certificates-natural-gems-belgium\/fa-oppc024wh-001-002\" title=\"online certificate boulder opal\" rel=\"noopener\" target=\"_blank\"\u003eFA-OPPC024WH-001-002\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIDENTIFICATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpecies : Natural Opal\u003cbr\u003eVariety : Boulder Opal\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eShape \u0026amp; Cutting Style : Free form cabochon, polished both sides\u003cbr\u003eMeasurements :\u003cspan\u003e \u003cspan\u003e21.2 x 14.5 x 7.6\u003c\/span\u003e mm\u003c\/span\u003e\u003cbr\u003eCarat Weight :\u003cspan\u003e \u003cspan\u003e16.91\u003c\/span\u003e \u003c\/span\u003eCarat\u003cbr\u003eColor :\u003cspan\u003e Brown covered blue green yellow purple\u003c\/span\u003e\u003cbr\u003eTransparency :\u003cspan\u003e \u003cspan\u003eOpaque\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eOrigin: Queensland\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eBirefringence : \u003c\/span\u003e\u003cspan\u003enone\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eCrystallography : Amorphous\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDispersion : Very low\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLuster : Iridescent\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHardness : 6-6.5\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRefractive index : 1.37-1.47\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSpecific gravity : 2.10\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMMENTS :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOptical Effect : Opaliscence (\u003cspan\u003eIridescent\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eno indications of heating, no indications of other treatments\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePersonal Note From Natural Gems Belgium:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis natural winton matrix boulder opal is a good example of \u003cspan\u003eIridescence in boulder opal, showing mainly violet blue and orangy yellow tones.\u003c\/span\u003e\u003cbr\u003epolish grade is good, it is free form shaped, luster is good, displaying fair to good color\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eNatural Gems Belgium reduced the retail price with 50% due to the lack of symmetry, and only fair to good color opaliscence present.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/naturalgemsbelgium.shop\/blogs\/info-certificates-natural-gems-belgium\/fa-oppc024wh-001-002\" title=\"online certificate of boulder opal gemstone\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003e\u003cstrong\u003e\u003cem\u003eFIND THE ONLINE CERTIFICATE HERE\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003efor general impression take a look at the pictures\u003c\/p\u003e\n\u003cp\u003eAll items are sent insured with track and trace regardless of value\u003c\/p\u003e","brand":"Natural Gems Belgium","offers":[{"title":"Default Title","offer_id":48882593399108,"sku":"FA-OPPC024WH-001-002","price":145.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/1827\/3860\/files\/natural-yellow-and-blue-winton-matrix-boulder-opal-16-91-ct-free-form-unheated-certified-by-ngb-natural-gems-belgium-precious-stones-72671928942916.jpg?v=1735152457"},{"product_id":"natural-orangy-brown-winton-matrix-boulder-opal-24-15-ct-semi-round-unheated","title":"Natural orangy brown Winton Matrix Boulder Opal - 24.15 ct - semi round - unheated","description":"\u003cp\u003eNatural orangy brown Winton Matrix Boulder Opal - 24.15 ct - semi round - unheated - Queensland\u003cbr\u003eThe striking combination of blue and green to yellow fire in this Natural orangy brown Matrix Boulder Opal, weighing 24.15 ct, is a testament to the beauty and rarity of this gem. Sourced from Queensland, this semi round cabochon is unheated and Natural. As a collector's item, this opal radiates luxury and sophistication, making it a valuable addition to any jewelry collection.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNatural Gems Belgium Colored Stone Certification : \u003ca href=\"https:\/\/naturalgemsbelgium.shop\/blogs\/info-certificates-natural-gems-belgium\/fa-wimb024ob-001-089\" title=\"certificate boulder opal\" rel=\"noopener\" target=\"_blank\"\u003eFA-WIMB024OB-001-089\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eIDENTIFICATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSpecies : Natural Opal\u003cbr data-mce-fragment=\"1\"\u003eVariety : Boulder Opal\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eShape \u0026amp; Cutting Style : semi round cabochon, polished both sides\u003cbr data-mce-fragment=\"1\"\u003eMeasurements :\u003cspan data-mce-fragment=\"1\"\u003e \u003cspan\u003e21.3 x 21.0 x 7.6\u003c\/span\u003e mm\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eCarat Weight :\u003cspan data-mce-fragment=\"1\"\u003e \u003cspan\u003e24.15\u003c\/span\u003e \u003c\/span\u003eCarat\u003cbr data-mce-fragment=\"1\"\u003eColor :\u003cspan data-mce-fragment=\"1\"\u003e orange and Brown covered \u003cspan\u003eGreen-Yellow-Violet-Blue Flash\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eTransparency :\u003cspan data-mce-fragment=\"1\"\u003e \u003cspan\u003eOpaque\u003c\/span\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cbr\u003eOrigin: Queensland\u003cbr\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cspan\u003eBirefringence : \u003c\/span\u003e\u003cspan\u003enone\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eCrystallography : Amorphous\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDispersion : Very low\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLuster : Iridescent\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHardness : 6-6.5\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRefractive index : 1.37-1.47\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSpecific gravity : 2.10\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eCOMMENTS :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOptical Effect : Opaliscence (\u003cspan\u003eIridescent\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eno indications of heating, no indications of other treatments\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePersonal Note From Natural Gems Belgium:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis natural winton matrix boulder opal is a good example of \u003cspan\u003eIridescence in boulder opal, showing mainly violet blue and green to yellow tones.\u003c\/span\u003e\u003cbr\u003epolish grade is fair to good, it is semi round shaped, luster is fair, displaying fair color\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eNatural Gems Belgium reduced the retail price with 50% due to the lack of symmetry, and only fair color opaliscence present.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/naturalgemsbelgium.shop\/blogs\/info-certificates-natural-gems-belgium\/fa-wimb024ob-001-089\" title=\"online certificate natural boulder opal\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003e\u003cstrong\u003e\u003cem\u003eFIND THE ONLINE CERTIFICATE HERE\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003efor general impression take a look at the pictures\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll items are sent insured with track and trace regardless of value\u003c\/p\u003e","brand":"Natural Gems Belgium","offers":[{"title":"Default Title","offer_id":49084976234820,"sku":"FA-WIMB024OB-001-089","price":373.12,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/1827\/3860\/files\/natural-orangy-brown-winton-matrix-boulder-opal-24-15-ct-semi-round-unheated-natural-gems-belgium-precious-stones-72671112790340.jpg?v=1735153779"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/1827\/3860\/collections\/boulder_opal_cabochons.png?v=1776095707","url":"https:\/\/naturalgemsbelgium.shop\/collections\/boulder-opal-cabochons.oembed","provider":"Natural Gems Belgium","version":"1.0","type":"link"}