{"product_id":"lab-grown-alexandrite-pendant-necklace-black-ruthenium","title":"Nightbriar Lab-Grown Alexandrite Pendant Necklace in Black Ruthenium","description":"\u003cstyle\u003e\n  .product-rich-content { font-family: inherit; color: #2a2a2a; line-height: 1.65; max-width: 720px; margin: 0 auto; }\n  .product-rich-content h2 { font-size: 1.35em; font-weight: 600; color: #1a1a1a; margin-top: 2em; margin-bottom: 0.5em; padding-bottom: 0.4em; border-bottom: 1px solid #d8cfe0; letter-spacing: -0.01em; }\n  .product-rich-content h2:first-child { margin-top: 0; }\n  .product-rich-content p { margin: 0.8em 0; }\n  .product-rich-content ul { padding-left: 1.4em; margin: 0.8em 0; }\n  .product-rich-content li { margin-bottom: 0.4em; }\n  .product-rich-content .lead-paragraph { font-size: 1.05em; color: #1a1a1a; padding: 1em 1.2em; background: #f4eef9; border-left: 3px solid #5a3d6e; border-radius: 4px; margin-bottom: 1.5em; }\n  .product-rich-content .feature-pills { display: flex; flex-wrap: wrap; gap: 0.5em; margin: 1.2em 0; }\n  .product-rich-content .feature-pills .pill { background: #f4eef9; color: #5a3d6e; padding: 0.4em 0.9em; border-radius: 100px; font-size: 0.88em; font-weight: 500; border: 1px solid #d8cfe0; }\n  .product-rich-content .ring-callout { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1em; margin: 1.2em 0; }\n  .product-rich-content .ring-callout .ring-card { padding: 1em 1.2em; background: #fafafa; border: 1px solid #ececec; border-radius: 6px; }\n  .product-rich-content .ring-callout .ring-card h3 { font-size: 0.95em; font-weight: 600; margin: 0 0 0.4em 0; color: #5a3d6e; letter-spacing: 0.04em; text-transform: uppercase; }\n  .product-rich-content .ring-callout .ring-card p { margin: 0.4em 0; font-size: 0.92em; }\n  .product-rich-content .spec-card { background: #fafafa; border: 1px solid #ececec; border-radius: 6px; padding: 1.2em 1.5em; margin: 1em 0; }\n  .product-rich-content .spec-card ul { margin: 0; }\n  .product-rich-content .spec-card li { list-style: none; padding: 0.35em 0; border-bottom: 1px dashed #e8e8e8; }\n  .product-rich-content .spec-card li:last-child { border-bottom: none; }\n  .product-rich-content .spec-card strong { display: inline-block; min-width: 140px; color: #1a1a1a; }\n  .product-rich-content .product-faq { margin-top: 2.5em; }\n  .product-rich-content .product-faq h2 { margin-bottom: 1em; }\n  .product-rich-content .faq-item { border: 1px solid #e8e8e8; border-radius: 6px; margin-bottom: 0.6em; background: #fff; transition: border-color 0.2s ease; }\n  .product-rich-content .faq-item:hover { border-color: #5a3d6e; }\n  .product-rich-content .faq-item summary { cursor: pointer; padding: 0.9em 1.1em; font-weight: 500; list-style: none; color: #1a1a1a; position: relative; padding-right: 2.5em; }\n  .product-rich-content .faq-item summary::-webkit-details-marker { display: none; }\n  .product-rich-content .faq-item summary::after { content: \"+\"; position: absolute; right: 1.1em; top: 50%; transform: translateY(-50%); font-size: 1.3em; color: #5a3d6e; font-weight: 300; transition: transform 0.2s ease; }\n  .product-rich-content .faq-item[open] summary::after { content: \"−\"; }\n  .product-rich-content .faq-item[open] summary { border-bottom: 1px solid #d8cfe0; }\n  .product-rich-content .faq-item p { padding: 0 1.2em 1em; margin: 0.6em 0 0; color: #4a4a4a; }\n  @media (max-width: 600px) {\n    .product-rich-content .ring-callout { grid-template-columns: 1fr; }\n    .product-rich-content .spec-card strong { display: block; min-width: auto; margin-bottom: 0.2em; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"product-rich-content\"\u003e\n\u003cp class=\"lead-paragraph\"\u003eA marquise lab-grown alexandrite held north–south in a milgrain frame, with alexandrite marquise rays radiating out into an eight-point starburst. The stone shifts between teal-blue and raspberry-violet as the light changes. Solid 925 sterling silver with a black ruthenium finish throughout, on an 18-inch box chain.\u003c\/p\u003e\n\u003cdiv class=\"feature-pills\"\u003e\n\u003cspan class=\"pill\"\u003eLab-Grown Alexandrite\u003c\/span\u003e\n\u003cspan class=\"pill\"\u003eVisible Color Shift\u003c\/span\u003e\n\u003cspan class=\"pill\"\u003eMarquise Cut\u003c\/span\u003e\n\u003cspan class=\"pill\"\u003eBlack Ruthenium Finish\u003c\/span\u003e\n\u003cspan class=\"pill\"\u003e18\" Black Box Chain\u003c\/span\u003e\n\u003cspan class=\"pill\"\u003eSolid 925 Sterling Silver\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow the Pendant Is Built\u003c\/h2\u003e\n\u003cdiv class=\"ring-callout\"\u003e\n\u003cdiv class=\"ring-card\"\u003e\n\u003ch3\u003eTapered Bail\u003c\/h3\u003e\n\u003cp\u003eA plain polished bail carries the pendant and slides freely on the chain, so it always rights itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ring-card\"\u003e\n\u003ch3\u003eMarquise Center\u003c\/h3\u003e\n\u003cp\u003eThe center stone runs north–south inside a milgrain frame, ringed by a halo of small round accents.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ring-card\"\u003e\n\u003ch3\u003eRay Points\u003c\/h3\u003e\n\u003cp\u003eMarquise rays radiate from the frame into an eight-point starburst, closing on one more marquise at the base.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe pendant is the necklace half of the Nightbriar family and repeats the ring's vocabulary at a smaller scale — the milgrain frame, the marquise rays, the starburst. Our \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/necklace-length-guide\"\u003enecklace length guide\u003c\/a\u003e covers how an 18-inch chain sits, and \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/how-to-layer-necklaces\"\u003ehow to layer necklaces\u003c\/a\u003e is worth reading if you wear more than one. For the wider style, see our guide to \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/gothic-necklaces-guide\"\u003egothic necklaces\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe Alexandrite and Its Color Shift\u003c\/h2\u003e\n\u003cp\u003eAlexandrite is the stone that changes color. Under daylight it reads teal to blue-green; under warm indoor light or candlelight it swings to raspberry, violet and plum. The effect is real optics — the mineral absorbs light unevenly across the spectrum, so what you see depends on what is illuminating it.\u003c\/p\u003e\n\u003cp\u003eThe shift is \u003cstrong\u003efully visible\u003c\/strong\u003e here. The stones are faceted and held in open prongs, so light passes through them. Our piece on \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/does-synthetic-alexandrite-change-colors\"\u003ewhether synthetic alexandrite changes color\u003c\/a\u003e explains the mechanism.\u003c\/p\u003e\n\u003cp\u003eThese stones are lab-grown. Natural alexandrite is among the rarest gemstones on earth and prices accordingly — the lab-grown material has the same chrysoberyl chemistry and the same behavior. Our comparison of \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/lab-grown-vs-natural-alexandrite-what-shoppers-actually-need-to-know\"\u003elab-grown versus natural alexandrite\u003c\/a\u003e lays out the trade-offs.\u003c\/p\u003e\n\u003cp\u003eEach center stone is marquise cut and set north–south, the most elongating orientation — the same reasoning our \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/marquise-engagement-rings-the-most-elongating-shape\"\u003eguide to marquise cuts\u003c\/a\u003e sets out for rings applies here.\u003c\/p\u003e\n\u003ch2\u003eMetal and Stones\u003c\/h2\u003e\n\u003cp\u003ePendant, bail and box chain are all solid 925 sterling silver with a \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/what-is-black-ruthenium\"\u003eblack ruthenium\u003c\/a\u003e finish — a platinum-group metal that settles to a deep gunmetal rather than a flat black. Running the finish through the chain as well is what keeps the piece reading as one dark line rather than a dark pendant hung on a bright chain, and the slight reflectivity keeps the milgrain readable instead of flattening it.\u003c\/p\u003e\n\u003cp\u003eSmaller lab-grown alexandrite marquises form the rays and the point at the base, and they shift with the center stone. The white accents — the halo of rounds around the frame and the pavé along the upper edge — are cubic zirconia. Moissanite or lab-grown diamond accents are available as a \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/how-long-does-custom-jewelry-take-a-step-by-step-timeline\"\u003ecustom order\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003ePart of our \u003ca href=\"https:\/\/aquamarise.com\/collections\/necklace\"\u003enecklaces\u003c\/a\u003e collection and the rest of our \u003ca href=\"https:\/\/aquamarise.com\/collections\/black-ruthenium-jewelry\"\u003eblack ruthenium jewelry\u003c\/a\u003e. Alexandrite is a June birthstone — see our \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/june-birthstone-guide\"\u003eJune birthstone guide\u003c\/a\u003e and the \u003ca href=\"https:\/\/aquamarise.com\/collections\/june-birthstone\"\u003eJune birthstone collection\u003c\/a\u003e, or work out \u003ca href=\"https:\/\/aquamarise.com\/blogs\/journal\/what-is-my-birthstone\"\u003ewhich stone is yours\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Pendant necklace on a box chain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter stone:\u003c\/strong\u003e Lab-grown alexandrite, marquise cut, set north–south\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor shift:\u003c\/strong\u003e Teal-blue in daylight to raspberry-violet in warm light — fully visible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent stones:\u003c\/strong\u003e Lab-grown alexandrite marquises; cubic zirconia throughout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 925 sterling silver, black ruthenium finish throughout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e Box chain, black ruthenium finish, 18 inches, lobster clasp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Milgrain frame with marquise rays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 8.5 on the Mohs scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePresentation:\u003c\/strong\u003e Free luxury velvet jewelry box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCare\u003c\/h2\u003e\n\u003cp\u003eAlexandrite is 8.5 on the Mohs scale and well suited to daily wear. Clean with warm water, mild soap and a soft brush. Avoid ultrasonic cleaners and household chemicals, which dull the ruthenium finish, and lay the chain flat in its velvet box rather than coiling it.\u003c\/p\u003e\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eDoes the color shift actually show?\u003c\/summary\u003e\u003cp\u003eYes. The stones are faceted and set in open prongs, so light passes through them and the shift is clearly visible — teal-blue in daylight, raspberry-violet under warm indoor light.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eIs the alexandrite real?\u003c\/summary\u003e\u003cp\u003eYes. It is genuine alexandrite — chrysoberyl — lab-grown rather than mined. Same chemistry, same hardness, same color-change behavior.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eDo the smaller stones change color too?\u003c\/summary\u003e\u003cp\u003eYes — the marquise rays are lab-grown alexandrite as well, and they shift along with the center stone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eIs alexandrite a birthstone?\u003c\/summary\u003e\u003cp\u003eYes — alexandrite is one of the June birthstones, alongside pearl and moonstone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eAre the white accent stones diamonds?\u003c\/summary\u003e\u003cp\u003eNo. They are cubic zirconia. Moissanite or lab-grown diamond accents are available as a custom order.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eHow dark is the black ruthenium finish?\u003c\/summary\u003e\u003cp\u003eRuthenium finishes to a deep gunmetal rather than a flat jet black. The slight reflectivity is what keeps the milgrain and the marquise rays visible instead of flattening them.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eWhat is it made of?\u003c\/summary\u003e\u003cp\u003eSolid 925 sterling silver throughout, with a black ruthenium finish. No brass or base metal.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eHow long is the chain?\u003c\/summary\u003e\u003cp\u003e18 inches — princess length. It sits just below the collarbone on most necks, which is where this pendant is sized to hang.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eIs the chain included?\u003c\/summary\u003e\u003cp\u003eYes. The pendant comes on a solid 925 sterling silver box chain with a lobster clasp, finished to match the pendant; nothing is sold separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eCan the pendant be worn on another chain?\u003c\/summary\u003e\u003cp\u003eYes. The bail is open enough to take most standard chains and cords, so you can move it onto a longer chain if you prefer.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eDoes it match the Nightbriar ring set?\u003c\/summary\u003e\u003cp\u003eYes. The pendant shares the milgrain frame and marquise rays of the Nightbriar rings in the same colorway, so the pieces read as one family.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary\u003eAre the stones ethically sourced?\u003c\/summary\u003e\u003cp\u003eYes. All Aquamarise stones are conflict-free and responsibly sourced, and every order arrives in a free luxury velvet jewelry box.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the color shift actually show?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The stones are faceted and set in open prongs, so light passes through them and the shift is clearly visible — teal-blue in daylight, raspberry-violet under warm indoor light.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the alexandrite real?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. It is genuine alexandrite — chrysoberyl — lab-grown rather than mined. 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Moissanite or lab-grown diamond accents are available as a custom order.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How dark is the black ruthenium finish?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Ruthenium finishes to a deep gunmetal rather than a flat jet black. The slight reflectivity is what keeps the milgrain and the marquise rays visible instead of flattening them.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is it made of?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Solid 925 sterling silver throughout, with a black ruthenium finish. No brass or base metal.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How long is the chain?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"18 inches — princess length. It sits just below the collarbone on most necks, which is where this pendant is sized to hang.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the chain included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The pendant comes on a solid 925 sterling silver box chain with a lobster clasp, finished to match the pendant; nothing is sold separately.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can the pendant be worn on another chain?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The bail is open enough to take most standard chains and cords, so you can move it onto a longer chain if you prefer.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does it match the Nightbriar ring set?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The pendant shares the milgrain frame and marquise rays of the Nightbriar rings in the same colorway, so the pieces read as one family.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are the stones ethically sourced?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. All Aquamarise stones are conflict-free and responsibly sourced, and every order arrives in a free luxury velvet jewelry box.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"Aquamarise","offers":[{"title":"Default Title","offer_id":52851108708663,"sku":"BOX #A45-2","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0537\/0586\/7444\/files\/Nightbriar_Alexandrite_Pendant_Necklace_Black_Ruthenium.jpg?v=1786832153","url":"https:\/\/aquamarise.com\/products\/lab-grown-alexandrite-pendant-necklace-black-ruthenium","provider":"Aquamarise","version":"1.0","type":"link"}