{"title":"Glow in the Dark","description":"\u003cp\u003eThese gems have a long afterglow (phosphorescence) - after being charged up by UV, they glow in the dark. Since these are accidental creations, some are shorter, some are longer, but all of them are cool!\u003c\/p\u003e","products":[{"product_id":"glow-in-the-dark-gagg-lumogarnet-facet-rough-high-glow","title":"Glow in the Dark GAGG Lumogarnet Facet Rough \"Long Glow\"!!","description":"\u003cp\u003eThese are lab-created GAGG (Gadolinium Aluminum Gallium Garnet) facet rough with pronounced phosphorescence (glow in the dark). Each piece is marked with its weight and you select which one to purchase.\u003c\/p\u003e\n\u003cp\u003eNote that, as a particularly defective crystal, some of these pieces will have a few bubbles.  The bubbles tend to correlate with the highest afterglow.\u003c\/p\u003e\n\u003cp\u003eThis is \"Long glow\" or \"high glow\" GAGG--a type of defective GAGG which exhibits a glow-in-the-dark effect.  They work pretty hard to avoid this happening since it makes the crystal useless for its intended purpose (detecting invisible radiation).  However mistakes happen and sometimes a crystal does show this effect.  Each one is a little different because the causes can vary, but this crystal shows a bright but short-lived initial glow which fades to a dimmer but long-lasting glow.  It was visible after at least an hour of sitting on my bedside table in the dark.\u003cbr\u003e\u003cbr\u003eCerium GAGG is brand new as far as gems go--it only entered industrial usage in 2014, and we just introduced it to the gem market last year. It is what we call a 'lumogarnet' - an exotic lab-created garnet with incredible fluorescence. We also call this 'Firefly Garnet'.\u003c\/p\u003e\n\u003cp\u003eLike Ce:YAG and LuAG GAGG is used as a scintillator, a crystal grown for its insanely strong fluorescence.  It is used to help detect invisible radiation by absorbing it and converting it to easily-detected visible light--gamma rays and x-rays will activate its glow in addition to UV and even normal blue light.\u003c\/p\u003e\n\u003cp\u003eProperties-wise this material is like an upgraded version of the classic GGG crossed with an aluminum garnet (like YAG and LuAG) to give it excellent hardness (8) while maintaining a high RI (1.9) and generally excellent gem properties. This material has very bright fluorescence, and like Ce:YAG and LuAG it is used as a scintillator to help detect invisible radiation.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"1pc under 1g (shard)","offer_id":50699619107104,"sku":"Rgh_GAGG_Hi_Shard","price":10.0,"currency_code":"USD","in_stock":false},{"title":"1pc under 1g (crumb)","offer_id":47043631448352,"sku":"Rgh_GAGG_Hi_Crumb","price":15.0,"currency_code":"USD","in_stock":false},{"title":"1pc 1-1.5g","offer_id":50699616059680,"sku":"Rgh_GAGG_Hi_1g","price":50.0,"currency_code":"USD","in_stock":false},{"title":"1pc 1.5-2g","offer_id":50699616092448,"sku":"Rgh_GAGG_Hi_1.5g","price":70.0,"currency_code":"USD","in_stock":false},{"title":"1pc 2-2.5g","offer_id":50699616125216,"sku":"Rgh_GAGG_Hi_2g","price":90.0,"currency_code":"USD","in_stock":true},{"title":"1pc 2.5-3g","offer_id":50699616157984,"sku":"Rgh_GAGG_Hi_2.5g","price":110.0,"currency_code":"USD","in_stock":true},{"title":"1pc 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The ones with great phosphorescence we also call 'Firefly Garnet'.\u003c\/p\u003e\n\u003cp\u003eThat's right, these particular examples glow in the dark!  They actually do their best to prevent that from happening because it makes them less effective for technical use, but every now and then growth goes wrong and a crystal will have some afterglow, and an even smaller percentage are also clean enough to facet into gems.\u003c\/p\u003e\n\u003cp\u003eGAGG is a durable gem with a high hardness of 8 and no cleavage.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Pendant with Round 'Dragon Eye' Cut avg. 10ct Stone  10mm","offer_id":49340604023072,"sku":"Pendant_GAGG","price":550.0,"currency_code":"USD","in_stock":false},{"title":"Pendant with Checkerboard Teardrop Cut avg. 7ct Stone 13x10mm","offer_id":49340604055840,"sku":"Pendant_GAGG","price":450.0,"currency_code":"USD","in_stock":false},{"title":"Pendant with Long Hexagon Cut avg. 7ct Stone 13x8mm","offer_id":49340604088608,"sku":"Pendant_GAGG","price":450.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/glowinthedark.jpg?v=1728066646"},{"product_id":"fantasy-cut-gagg-lumogarnet-with-bubbles-loose-faceted-stones","title":"Fantasy cut GAGG Lumogarnet with Bubbles Loose Faceted Stones","description":"\u003cp\u003eThese are fantasy cut GAGG lumogarnets with bubbles.  Some are more included than others, and some have a decent afterglow.  Each is pictured individually.\u003c\/p\u003e\n\u003cp\u003eCerium GAGG is a material which has recently risen to prominence in industry but never been used as a gem until now. It is what we call a 'lumogarnet' - a lab created garnet with incredible fluorescence. It glows a bright yellow, slightly greener and brighter than already-bright Ce:YAG. This material is like an upgraded version of the classic GGG crossed with an aluminum garnet (like YAG and LuAG) to give it excellent hardness (8) while maintaining a high RI (1.9) and generally excellent gem properties. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSome of these glow in the dark! Growers work very hard to make sure GAGG does not glow in the dark since it lowers the temporal resolution of the system (you want to know where an x-ray is now, not where it was an hour ago!) but sometimes they make mistakes, and a small subset have a stronger glow.  In particular these bubbly stones have a higher rate since they're already messed up in another way.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"12.9ct","offer_id":50022969311520,"sku":"Fantasy_GAGG_001","price":193.0,"currency_code":"USD","in_stock":true},{"title":"13.1ct","offer_id":50022969344288,"sku":"Fantasy_GAGG_002","price":196.0,"currency_code":"USD","in_stock":true},{"title":"14.5ct With Afterglow","offer_id":50022969409824,"sku":"Fantasy_GAGG_003","price":217.0,"currency_code":"USD","in_stock":true},{"title":"15.7ct","offer_id":50022969442592,"sku":"Fantasy_GAGG_004","price":235.0,"currency_code":"USD","in_stock":true},{"title":"16.7ct With Afterglow","offer_id":50022969475360,"sku":"Fantasy_GAGG_005","price":250.0,"currency_code":"USD","in_stock":true},{"title":"18.5ct With Afterglow","offer_id":50022969508128,"sku":"Fantasy_GAGG_006","price":277.0,"currency_code":"USD","in_stock":true},{"title":"21.7ct","offer_id":50022969540896,"sku":"Fantasy_GAGG_007","price":325.0,"currency_code":"USD","in_stock":true},{"title":"23.9ct","offer_id":50022969573664,"sku":"Fantasy_GAGG_008","price":358.0,"currency_code":"USD","in_stock":true},{"title":"24ct","offer_id":50022969606432,"sku":"Fantasy_GAGG_009","price":250.0,"currency_code":"USD","in_stock":true},{"title":"25ct With Afterglow","offer_id":50022969639200,"sku":"Fantasy_GAGG_010","price":475.0,"currency_code":"USD","in_stock":true},{"title":"27.8ct With Afterglow","offer_id":50022969671968,"sku":"Fantasy_GAGG_011","price":450.0,"currency_code":"USD","in_stock":false},{"title":"29.8ct With Afterglow","offer_id":50022969737504,"sku":"Fantasy_GAGG_012","price":330.0,"currency_code":"USD","in_stock":false},{"title":"33.3ct","offer_id":50022969770272,"sku":"Fantasy_GAGG_013","price":499.0,"currency_code":"USD","in_stock":true},{"title":"33.8ct","offer_id":50022969803040,"sku":"Fantasy_GAGG_014","price":507.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/IMG_0009crop.jpg?v=1742924968"},{"product_id":"fantasy-cut-gagg-lumogarnet","title":"Fantasy Cut GAGG Lumogarnets","description":"\u003cp\u003eThese are fantasy cut GAGG lumogarnets.  Some also have a noticeable afterglow\/phosphorescence.  Each is pictured individually.\u003c\/p\u003e\n\u003cp\u003eGAGG is known for its incredible fluorescence which turns basically any higher energy radiation into vivid yellow light.  These fantasy cuts with their concave curved faces add an extra dimension to the stones, like staring into infinity.\u003c\/p\u003e\n\u003cp\u003eCerium GAGG is a material which has recently risen to prominence in industry but never been used as a gem until now. 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This material is like an upgraded version of the classic GGG crossed with an aluminum garnet (like YAG and LuAG) to give it excellent hardness (8) while maintaining a high RI (1.9) and generally excellent gem properties. \u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Pear 20.0ct 18x12.3mm","offer_id":50871939432736,"sku":"FNT_GAGG_001_20251107","price":293.0,"currency_code":"USD","in_stock":true},{"title":"Pear 22.8ct 19.5x10.8mm","offer_id":50871939465504,"sku":"FNT_GAGG_002_20251107","price":330.0,"currency_code":"USD","in_stock":true},{"title":"Pear 30.4ct 18.4x13.7mm","offer_id":50872055005472,"sku":"FNT_GAGG_003_20251107","price":425.0,"currency_code":"USD","in_stock":true},{"title":"Pear 31.8ct 20x12.6mm","offer_id":50872055038240,"sku":"FNT_GAGG_004_20251107","price":441.0,"currency_code":"USD","in_stock":false},{"title":"Pear 39.2ct 19.5x15.6mm","offer_id":50872055071008,"sku":"FNT_GAGG_005_20251107","price":525.0,"currency_code":"USD","in_stock":true},{"title":"Pixel 58.6ct 20x15.8mm","offer_id":50872055365920,"sku":"FNT_GAGG_014_20251107","price":709.0,"currency_code":"USD","in_stock":false},{"title":"Pixel 65.7ct 20x16.3mm","offer_id":50872055398688,"sku":"FNT_GAGG_015_20251107","price":763.0,"currency_code":"USD","in_stock":false},{"title":"Oval 14.1ct 14.3x11.2mm","offer_id":50872055431456,"sku":"FNT_GAGG_016_20251107","price":212.0,"currency_code":"USD","in_stock":true},{"title":"Oval 15.2ct 14.9x11.3mm","offer_id":50872055464224,"sku":"FNT_GAGG_017_20251107","price":228.0,"currency_code":"USD","in_stock":true},{"title":"Oval 17.3ct 15.2x11.3mm","offer_id":50872055496992,"sku":"FNT_GAGG_018_20251107","price":257.0,"currency_code":"USD","in_stock":true},{"title":"Oval 23.8ct 17.2x13mm","offer_id":50872055529760,"sku":"FNT_GAGG_019_20251107","price":343.0,"currency_code":"USD","in_stock":true},{"title":"Oval 31ct 19.8x13.8mm","offer_id":50872055562528,"sku":"FNT_GAGG_020_20251107","price":432.0,"currency_code":"USD","in_stock":true},{"title":"Oval 52.8ct 22.8x16.6mm","offer_id":50872055595296,"sku":"FNT_GAGG_021_20251107","price":659.0,"currency_code":"USD","in_stock":false},{"title":"Oval 57.6ct 23x16.4mm","offer_id":50872055628064,"sku":"FNT_GAGG_022_20251107","price":700.0,"currency_code":"USD","in_stock":true},{"title":"Round 31ct 15.5mm","offer_id":50872055660832,"sku":"FNT_GAGG_RND_15.5","price":432.0,"currency_code":"USD","in_stock":false},{"title":"Round 30ct 16.3mm","offer_id":50872055693600,"sku":"FNT_GAGG_RND_16.3","price":420.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 11.1ct 11.6mm","offer_id":50872055726368,"sku":"FNT_GAGG_TRL_11.6","price":169.0,"currency_code":"USD","in_stock":false},{"title":"Trillion 15.5ct 12.4mm","offer_id":50872055759136,"sku":"FNT_GAGG_TRL_12.4","price":232.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 15 ct 12.8mm","offer_id":50872055791904,"sku":"FNT_GAGG_TRL_12.8","price":225.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 18.3ct 13.6mm","offer_id":50872055824672,"sku":"FNT_GAGG_TRL_13.6","price":270.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 20.8ct 14.3mm","offer_id":50872055857440,"sku":"FNT_GAGG_TRL_14.3","price":304.0,"currency_code":"USD","in_stock":false},{"title":"Trillion 22ct 15mm","offer_id":50872055890208,"sku":"FNT_GAGG_TRL_15","price":320.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 30.6ct 16mm","offer_id":50872055922976,"sku":"FNT_GAGG_TRL_16","price":427.0,"currency_code":"USD","in_stock":true},{"title":"Trillion 30ct 16.6mm","offer_id":50872055955744,"sku":"FNT_GAGG_TRL_16.6","price":420.0,"currency_code":"USD","in_stock":true},{"title":"Cushion 41.1ct 16.7mm","offer_id":50872055988512,"sku":"FNT_GAGG_CSH_16.7","price":545.0,"currency_code":"USD","in_stock":true},{"title":"Cushion 53.7ct 17.7mm","offer_id":50872056021280,"sku":"FNT_GAGG_CSH_17.7","price":667.0,"currency_code":"USD","in_stock":true},{"title":"Cushion 54.3ct 18.3mm","offer_id":50872056054048,"sku":"FNT_GAGG_CSH_18.3","price":672.0,"currency_code":"USD","in_stock":true},{"title":"Cushion 56.9ct 18.5mm","offer_id":50872056086816,"sku":"FNT_GAGG_CSH_18.5","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/Fantasy_Cut_GAGG_Lumogarnets.jpg?v=1762284749"},{"product_id":"pixelt-tablet-cuts","title":"Pixel Tablet Cuts","description":"\u003cp\u003eThese are fantasy cut GAGG lumogarnets.  Some also have a noticeable afterglow\/phosphorescence.  Each is pictured individually.\u003c\/p\u003e\n\u003cp\u003eGAGG is known for its incredible fluorescence which turns basically any higher energy radiation into vivid yellow light.  These fantasy cuts with their concave curved faces add an extra dimension to the stones, like staring into infinity.\u003c\/p\u003e\n\u003cp\u003eCerium GAGG is a material which has recently risen to prominence in industry but never been used as a gem until now. 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This material is like an upgraded version of the classic GGG crossed with an aluminum garnet (like YAG and LuAG) to give it excellent hardness (8) while maintaining a high RI (1.9) and generally excellent gem properties. \u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"GAGG \/ Pixel 6.2ct 9.0x7.6mm","offer_id":50877481386272,"sku":"PXL_GAGG_001_20251107","price":97.0,"currency_code":"USD","in_stock":false},{"title":"GAGG \/ Pixel 7.7ct 8.7x7.4mm","offer_id":50877481419040,"sku":"PXL_GAGG_002_20251107","price":119.0,"currency_code":"USD","in_stock":true},{"title":"GAGG \/ Pixel 7.8ct 9.1x8mm","offer_id":50877481451808,"sku":"PXL_GAGG_003_20251107","price":121.0,"currency_code":"USD","in_stock":true},{"title":"GAGG \/ Pixel 9.7ct 9.7x8.2mm","offer_id":50877481484576,"sku":"PXL_GAGG_004_20251107","price":149.0,"currency_code":"USD","in_stock":true},{"title":"GAGG \/ Pixel 12.9ct 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4.54g","offer_id":51555104391456,"sku":"Lumenite_02320260427","price":1278.0,"currency_code":"USD","in_stock":false},{"title":"Block, 13.9×13.4×11.2mm, 6.5g","offer_id":51555104424224,"sku":"Lumenite_02420260427","price":1756.0,"currency_code":"USD","in_stock":false},{"title":"Block, 15.9×12.4×10.4mm, 6.77g","offer_id":51555104456992,"sku":"Lumenite_02520260427","price":1819.0,"currency_code":"USD","in_stock":false},{"title":"Block, 16.9×12.6×10.8mm, 7.42g","offer_id":51555104489760,"sku":"Lumenite_02620260427","price":1966.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/Phosphorescent_Lumenite_Rough.jpg?v=1777860580"},{"product_id":"lumenite®-cushion-17-9ct-glow-in-the-dark-strontium-aluminate-monocrystal","title":"Lumenite™ Cushion 17.9ct, Glow in the Dark Strontium Aluminate Monocrystal","description":"\u003cp\u003eThis is one of the first ever faceted Lumenite™, a single crystal made from strontium aluminate.  It has both incredible fluorescence and ultra-bright and long-lasting phosphorescence.  This stone weighs in at 17.9ct.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Default Title","offer_id":51562375512352,"sku":null,"price":6750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/Lumenite_Phosphorescence.jpg?v=1777954678"}],"url":"https:\/\/store.gemsofscience.com\/collections\/glow-in-the-dark.oembed","provider":"Gems Of Science","version":"1.0","type":"link"}