{"product_id":"australian-boulder-opal-gold-pendant-2009","title":"Black Opal Pendant – 18K Gold, 0.86ct, Semi-Dark, Green Flash","description":"\u003cstyle\u003e.rotr-faq { border-bottom: 1px solid #e5e5e5; padding: 14px 4px; margin: 0; } .rotr-faq:first-of-type { border-top: 1px solid #e5e5e5; } .rotr-faq \u003e summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; padding: 4px 0; outline: none; } .rotr-faq \u003e summary::-webkit-details-marker { display: none; } .rotr-faq \u003e summary::after { content: \"+\"; font-size: 1.5em; font-weight: 300; line-height: 1; margin-left: 12px; transition: transform 0.2s ease; } .rotr-faq[open] \u003e summary::after { content: \"−\"; } .rotr-faq-answer { margin: 10px 0 0 0; }\u003c\/style\u003e\n\u003cp\u003eThis Lightning Ridge black opal sits in a slim bezel of solid 18K yellow gold, with a single diamond accent beside it. At 15×7 mm the stone is notably elongated — longer than many pendants at this carat weight — and that proportion means the green flash of colour travels across its face in a wide, rolling sweep rather than concentrating in a single point. Body tone is semi-dark: dark enough to give the colour drama, light enough that the stone still reads warm rather than heavy against the skin. On the chain — 18K gold-plated at 45 cm — it sits at the collarbone, where movement catches the flash repeatedly throughout the day. Offered as a single one-of-a-kind piece.\u003c\/p\u003e\n\u003ch3\u003eAbout Black Opal\u003c\/h3\u003e\n\u003cp\u003eBlack opal is the rarest and most sought-after variety of Australian opal, mined almost exclusively from Lightning Ridge in New South Wales. Its dark body tone — from dark grey to jet black — creates a dramatic backdrop that intensifies the stone's natural play-of-colour, producing vivid flashes that appear to glow from within. Black opal with strong fire is particularly prized by collectors and is considered among the most valuable gemstones in the world.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone:\u003c\/strong\u003e Black Opal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarat Weight:\u003c\/strong\u003e 0.86 ct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 15 × 7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour Play:\u003c\/strong\u003e Green dominant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Tone:\u003c\/strong\u003e Semi-dark\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrightness:\u003c\/strong\u003e Bright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePattern:\u003c\/strong\u003e Flash of colour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Bezel set, with a diamond accent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e 18K yellow gold-plated, 45 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Lightning Ridge, New South Wales, Australia\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e One-of-a-kind — 1 piece available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCaring for Your Opal\u003c\/h3\u003e\n\u003cp\u003eOpal is softer than diamond or sapphire, so a little care goes a long way. See \u003ca href=\"\/pages\/opal-care\"\u003eOpal Care\u003c\/a\u003e for storage, cleaning, and what to avoid.\u003c\/p\u003e\n\u003ch3\u003eProvenance\u003c\/h3\u003e\n\u003cp\u003eHand-selected by Joseph Bernecki, sourced direct from the Australian opal fields and set in his Sydney workshop. Meet him any weekend at The Rocks Market, stall under the bridge, Sydney. \u003ca href=\"\/pages\/about-rocks-on-the-rocks\"\u003eRead Joseph's story →\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\n\u003csummary\u003eWhat does \"semi-dark\" body tone mean for this stone?\u003c\/summary\u003e\n\u003cdiv class=\"rotr-faq-answer\"\u003eSemi-dark sits between a light-bodied opal and a fully black one. On this piece, the semi-dark backdrop gives the green flash strong contrast without making the stone read heavy or opaque — a particularly wearable part of the spectrum.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\n\u003csummary\u003eWhat is a \"flash of colour\" pattern?\u003c\/summary\u003e\n\u003cdiv class=\"rotr-faq-answer\"\u003eFlash of colour describes a pattern where the play-of-colour appears and disappears in a single bold sweep as the stone moves, rather than breaking into a grid (harlequin), a scatter of small dots (pinfire), or a rolling wave (broadflash). On an elongated stone like this 15×7 mm piece, the flash can travel the full length of the face in one movement — which is exactly what makes the proportion work so well at the collarbone.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\n\u003csummary\u003eIs the chain solid gold or plated?\u003c\/summary\u003e\n\u003cdiv class=\"rotr-faq-answer\"\u003eThe pendant setting is solid 18K yellow gold. The chain is 18K yellow gold-plated — a standard pairing that keeps the piece accessible without compromising the setting. A solid 18K chain upgrade is available on request.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\n\u003csummary\u003eIs this a natural Australian opal?\u003c\/summary\u003e\n\u003cdiv class=\"rotr-faq-answer\"\u003eYes — a solid, untreated Black Opal from Lightning Ridge. Not a doublet, not a triplet, not synthetic. One stone, natural colour.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\n\u003csummary\u003eCertification, shipping, returns?\u003c\/summary\u003e\n\u003cdiv class=\"rotr-faq-answer\"\u003eEvery piece is backed by Joseph's personal guarantee, ships fully insured within Australia, and can be returned within 14 days. See \u003ca href=\"\/pages\/buying-an-opal\"\u003eBuying an Opal\u003c\/a\u003e for the full breakdown.\u003c\/div\u003e\n\u003c\/details\u003e","brand":"Rocks On The Rocks","offers":[{"title":"Default Title","offer_id":44536198529207,"sku":"2009","price":1950.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/9176\/1987\/files\/OpBlkPd2082.4.jpg?v=1741082723","url":"https:\/\/www.rocksontherocks.com\/products\/australian-boulder-opal-gold-pendant-2009","provider":"Rocks On The Rocks","version":"1.0","type":"link"}