{"product_id":"pr-yap-faceting-rough","title":"Ghost Pr:YAP (Yttrium Aluminum Perovskite) — Rare Lab-Grown Fluorescent Faceting Rough","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e💎 Ghost Pr:YAP Rough — Ethereal Color, Hidden Glow, Hard-Wearing Rarity\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMeet one of the rarest faceting materials you'll ever put on the wheel: praseodymium-doped Yttrium Aluminum Perovskite (Pr:YAlO₃), affectionately known as \"Ghost.\" Engineered as a high-performance laser host and fast scintillator crystal for radiation detection, this exotic lab-grown perovskite rarely escapes the optics lab — which makes it a true prize for collectors and cutters chasing something nobody else has. With a soft, otherworldly body color, a faint multi-band fluorescence, and a hardness that actually stands up to daily wear, Ghost Pr:YAP is equal parts science-lab pedigree and gem-bench drama.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e✨ Key Features:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Soft, ghostly green to yellow-green from praseodymium doping — pale and ethereal, often shifting subtly with lighting and orientation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFluorescence\u003c\/strong\u003e: Subtle and multi-band from praseodymium activation — a faint pink under midwave UV (~302 nm), and a very slight greenish-blue under shortwave (254 nm) and longwave (365 nm). All reactions are gentle whispers rather than dramatic glows — the quiet \"Ghost\" namesake\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: ~8.5 on the Mohs scale — genuinely durable, suitable for rings and everyday-wear pieces\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eRefractive Index\u003c\/strong\u003e: Biaxial\/birefringent — roughly 1.92–1.95 depending on axis\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003ePleochroism\u003c\/strong\u003e: Optically anisotropic crystal; orientation affects both color and brilliance, so plan your dop angle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDispersion\u003c\/strong\u003e: Low to moderate — color, glow, and durability are the draw here rather than fire\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDensity\u003c\/strong\u003e: ~5.35 g\/cm³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMelting Point\u003c\/strong\u003e: ~1875 °C (3407 °F)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Lab-grown using the Czochralski pulling method\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eCleavage\u003c\/strong\u003e: None, but brittle — standard care when cutting and setting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eWhether you're building a fluorescent or scintillator collection, hunting an exotic material with a genuine high-tech backstory, or simply want a durable, ring-worthy stone with a quiet ghostly glow, Pr:YAP delivers a rarity that's as fun under the lab lamp as it is on the bench. Each piece is sold by weight.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e📸 Additional Notes:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" style=\"font-style: italic;\"\u003e\u003cem\u003eIf you would like to see additional pictures of the piece(s) you're interested in, please feel free to contact me. I'll be happy to provide more images for your review.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" style=\"font-style: italic;\"\u003e\u003cem\u003eThe color of the stone in the photo may vary slightly, as not all computer monitors are calibrated the same.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" style=\"font-style: italic;\"\u003e\u003cem\u003eFluorescence is subtle across all bands. The pink midwave (~302 nm) reaction in particular requires a midwave lamp, which many hobbyists don't own — and even the shortwave\/longwave greenish-blue is very faint, so this material may read as non-fluorescent under casual viewing.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" style=\"font-style: italic;\"\u003e\u003cem\u003eBecause this material is pleochroic, orientation during cutting will affect the final color and brilliance — worth dialing in before you commit your table.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tom's Box of Rocks","offers":[{"title":"YAP0001 - 6.9 grams","offer_id":45236931657797,"sku":"YAP0001","price":84.0,"currency_code":"USD","in_stock":false},{"title":"YAP0002 - 15.6 grams","offer_id":45238323707973,"sku":"YAP0002","price":171.0,"currency_code":"USD","in_stock":false},{"title":"YAP0003 - 2.6 grams","offer_id":45238323740741,"sku":"YAP0003","price":40.0,"currency_code":"USD","in_stock":true},{"title":"YAP0004 - 19.7 grams","offer_id":45238323773509,"sku":"YAP0004","price":211.0,"currency_code":"USD","in_stock":true},{"title":"YAP0005 - 9.8 grams","offer_id":45238323806277,"sku":"YAP0005","price":113.0,"currency_code":"USD","in_stock":true},{"title":"YAP0006 - 7.0 grams","offer_id":45238323839045,"sku":"YAP0006","price":85.0,"currency_code":"USD","in_stock":true},{"title":"YAP0007 - 6.2 grams","offer_id":45238323871813,"sku":"YAP0007","price":77.0,"currency_code":"USD","in_stock":true},{"title":"YAP0008 - 13.0 grams","offer_id":45238323904581,"sku":"YAP0008","price":145.0,"currency_code":"USD","in_stock":true},{"title":"YAP0009 - 6.6 grams","offer_id":45238323937349,"sku":"YAP0009","price":81.0,"currency_code":"USD","in_stock":true},{"title":"YAP0010 - 6.6 grams","offer_id":45238323970117,"sku":"YAP0010","price":81.0,"currency_code":"USD","in_stock":true},{"title":"YAP0011 - 2.0 grams - Thin piece","offer_id":45238324002885,"sku":"YAP0011","price":25.95,"currency_code":"USD","in_stock":true},{"title":"YAP0012 - 4.3 grams","offer_id":45238324035653,"sku":"YAP0012","price":58.0,"currency_code":"USD","in_stock":true},{"title":"YAP0013 - 3.4 grams","offer_id":45238324068421,"sku":"YAP0013","price":48.0,"currency_code":"USD","in_stock":true},{"title":"YAP0014 - 13.7 grams","offer_id":45238324101189,"sku":"YAP0014","price":151.0,"currency_code":"USD","in_stock":true},{"title":"YAP0015 - 4.9 grams","offer_id":45238324133957,"sku":"YAP0015","price":63.0,"currency_code":"USD","in_stock":true},{"title":"YAP0016 - 5.7 grams","offer_id":45238324166725,"sku":"YAP0016","price":72.0,"currency_code":"USD","in_stock":true},{"title":"YAP0017 - 3.2 grams","offer_id":45238324199493,"sku":"YAP0017","price":47.0,"currency_code":"USD","in_stock":true},{"title":"YAP0018 - 6.9 grams","offer_id":45238324232261,"sku":"YAP0018","price":84.0,"currency_code":"USD","in_stock":true},{"title":"YAP0019 - 2.1 grams","offer_id":45238324265029,"sku":"YAP0019","price":36.0,"currency_code":"USD","in_stock":true},{"title":"YAP0020 - 8.5 grams","offer_id":45238324297797,"sku":"YAP0020","price":100.0,"currency_code":"USD","in_stock":true},{"title":"YAP0021 - 6.6 grams","offer_id":45238324330565,"sku":"YAP0021","price":80.0,"currency_code":"USD","in_stock":true},{"title":"YAP0022 - 2.0 grams","offer_id":45238324363333,"sku":"YAP0022","price":35.0,"currency_code":"USD","in_stock":true},{"title":"YAP0023 - 1.3 grams","offer_id":45238324396101,"sku":"YAP0023","price":28.0,"currency_code":"USD","in_stock":true},{"title":"YAP0024 - 1.3 grams","offer_id":45238324428869,"sku":"YAP0024","price":27.0,"currency_code":"USD","in_stock":true},{"title":"YAP0025 - 6.5 grams","offer_id":45238324461637,"sku":"YAP0025","price":80.0,"currency_code":"USD","in_stock":true},{"title":"YAP0026 - 14.9 grams","offer_id":45238324494405,"sku":"YAP0026","price":164.0,"currency_code":"USD","in_stock":true},{"title":"YAP0027 - 9.0 grams","offer_id":45238324527173,"sku":"YAP0027","price":105.0,"currency_code":"USD","in_stock":true},{"title":"YAP0028 - 3.4 grams","offer_id":45238324559941,"sku":"YAP0028","price":48.0,"currency_code":"USD","in_stock":true},{"title":"YAP0029 - 6.5 grams","offer_id":45238324592709,"sku":"YAP0029","price":80.0,"currency_code":"USD","in_stock":true},{"title":"YAP0030 - 1.2 grams","offer_id":45238324625477,"sku":"YAP0030","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4105\/2741\/files\/pr-yap-a3e0560b7e.jpg?v=1782857391","url":"https:\/\/tomsboxofrocks.com\/products\/pr-yap-faceting-rough","provider":"Tom's Box of Rocks","version":"1.0","type":"link"}