{"product_id":"australian-opal-doublet-silver-pendant-2612","title":"Opal Doublet Pendant – Sterling Silver, 11×9mm, Strong Red 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\n\u003cp\u003eRed is the rarest colour in Australian opal — rarer than green, blue, or violet — and this doublet leads with it. The opal layer flashes a strong, saturated red with the kind of immediacy that makes you turn the piece in your hand to chase it. Set in a sterling silver bezel at 11×9mm, it sits squarely on the collarbone at the end of a 45cm chain — present enough to be noticed, compact enough to wear every day. The dark backing amplifies the red above it, the way a deep wall makes a lit painting glow harder than it otherwise would.\u003c\/p\u003e\n\n\u003ch3\u003eAbout Opal Doublet\u003c\/h3\u003e\n\u003cp\u003eAn opal doublet is a thin slice of natural Australian opal cemented to a dark backing — usually ironstone or black potch (the common opal that doesn't carry colour play). Doublets are a legitimate technique used in the opal trade for over a century: solid opal thick enough to cut as a whole stone is rare, so using the precious opal layer efficiently means more people can own genuine Australian opal at a sensible price. The opal itself is the same material you'd find in a solid stone — just used more efficiently — and the dark backing intensifies the colour play above it.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStone:\u003c\/strong\u003e Australian Opal Doublet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 11×9mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour Play:\u003c\/strong\u003e Red dominant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrightness:\u003c\/strong\u003e Strong flash\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePattern:\u003c\/strong\u003e Flash of colour\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e Doublet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Bezel, sterling silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e Rhodium-plated, 45cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e 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\n\u003ch3\u003eCaring for Your Opal\u003c\/h3\u003e\n\u003cp\u003eOpal is softer than diamond or sapphire, and doublets need extra care around water — prolonged exposure can degrade the bond between the opal layer and its backing. See \u003ca href=\"\/pages\/opal-care\"\u003eOpal Care\u003c\/a\u003e for the full routine including doublet-specific notes.\u003c\/p\u003e\n\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\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\u003csummary\u003eIs this real Australian opal?\u003c\/summary\u003e\u003cdiv class=\"rotr-faq-answer\"\u003eYes — the opal layer is genuine natural Australian opal, the same material used in solid opal pieces. It's been crafted as a doublet, meaning the opal is cemented to a dark backing rather than left as a thicker solid stone. The opal itself is 100% natural and Australian.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\u003csummary\u003eIs the chain sterling silver?\u003c\/summary\u003e\u003cdiv class=\"rotr-faq-answer\"\u003eThe pendant setting is sterling silver. The chain is rhodium-plated — a platinum-group finish that resists tarnish and keeps the silver looking clean longer than uncoated silver.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\u003csummary\u003eWhy is red so rare in opal?\u003c\/summary\u003e\u003cdiv class=\"rotr-faq-answer\"\u003eOpal's colour play comes from light diffracting through tiny silica spheres — and red requires the largest sphere sizes to produce. Those conditions are less common in the opal beds, which is why red-dominant stones are found less often than green or blue. When red is the lead colour and it's strong, it's worth noting.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"rotr-faq\"\u003e\u003csummary\u003eCertification, shipping, returns?\u003c\/summary\u003e\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\u003c\/details\u003e","brand":"Rocks On The Rocks","offers":[{"title":"Default Title","offer_id":44887909925047,"sku":"2612","price":335.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/9176\/1987\/files\/OpDbPd225.2_a6cd9a4a-4194-4f40-a668-fd1dfaf9700b.jpg?v=1746000470","url":"https:\/\/www.rocksontherocks.com\/products\/australian-opal-doublet-silver-pendant-2612","provider":"Rocks On The Rocks","version":"1.0","type":"link"}