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Each individual stone is labelled with its carat weight and letter in the photo and they can be purchased individually.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis is next-gen Nd+ laser YAG, a type of lab created garnet used widely in lasers.  The original Nd YAG has been used in lasers since 1964, but the old formula only contained Nd and was all the same shade of purple-pink.  This material is a newer, more advanced formulation with extra elements like Ce added to broaden the accepted wavelengths for lasing thus making the lasers more powerful, and these add another dimension to the color.  In natural light they vary from purple to pink to peach, and under fluorescent lighting they change to near colorless or a pale orange-yellow.  These stones have been compared to Mahenge garnets and pastel pyropes.\u003c\/p\u003e\n\u003cp\u003eNote this color change is the exact opposite of Holmium laser YAG, and if you pair the two you can do a neat color swap magic trick.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWith a hardness of 8.5 it is ideal for use in all kinds of jewelry.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"violet \/ 3mm Round Cut (avg 0.15ct)","offer_id":49519814902048,"sku":"Gem_YAGNd_Viol_Rnd_3","price":8.0,"currency_code":"USD","in_stock":false},{"title":"violet \/ 4mm round Cut (avg 0.4ct)","offer_id":49519810871584,"sku":"Gem_YAGNd_Viol_Rnd_4","price":12.0,"currency_code":"USD","in_stock":true},{"title":"violet \/ 5mm Round Cut (avg 0.8ct)","offer_id":49519810937120,"sku":"Gem_YAGNd_Viol_Rnd_5","price":24.0,"currency_code":"USD","in_stock":true},{"title":"violet \/ 6mm Round Cut (avg. 1ct)","offer_id":49519811002656,"sku":"Gem_YAGNd_Viol_Rnd_6","price":30.0,"currency_code":"USD","in_stock":false},{"title":"violet \/ 7mm Round Cut (avg. 2ct)","offer_id":49519811035424,"sku":"Gem_YAGNd_Viol_Rnd_7","price":60.0,"currency_code":"USD","in_stock":true},{"title":"violet \/ 8mm 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faceted golden laser garnets (Ce+Nd Yttrium Aluminum Garnet).  Some fluoresce pink and others fluoresce green-yellow, all have a rich golden-yellow base color that shifts depending on the illumination.\u003c\/p\u003e\n\u003cp\u003eWe have a special on 10mm stones with light chipping--they were shipped without appropriate padding, and our grief is your discount.\u003cbr\u003e\u003cbr\u003eThis is an unusual lab created garnet, YAG doped with both cerium and neodymium. Neodymium makes YAG a versatile laser crystal, and Nd YAG lasers are the most versatile and widely-used. While the original Nd YAG lasers only added Nd it was soon discovered that Ce could act as a booster to its power. This means that depending on the application you might see crystals that only have Nd or ones that are almost entirely Ce with just a pinch of Nd. Fortunately for us only the middle portion of the garnet crystals can be used for lasers and we were able to buy some of the unused tops to repurpose as gems.\u003cbr\u003e\u003cbr\u003ePure Nd gives a color shifting purple-pink color while pure Ce gives a rich fluorescent yellow color--when the two are mixed you get an unusual golden yellow color that shifts depending on the lighting. In sunlight it has a strong golden hue while some indoor lights will make it more pure yellow or more orangeish, and on a black background it sometimes takes on a green cast.\u003cbr\u003e\u003cbr\u003eThese CeNd YAG stones also show unusual dual fluorescence, with a mix of bright yellow and pink under shortwave UV and yellow-green under both blue light and shortwave UV.\u003cbr\u003e\u003cbr\u003eYAG has a high hardness of 8.25-8.5 and no durability issues. 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for.\u003c\/p\u003e\n\u003cp\u003eNeodymium makes YAG a versatile laser crystal, and Nd YAG lasers are the most versatile and widely-used. While the original Nd YAG lasers only added Nd it was soon discovered that Ce could act as a booster to its power. This means that depending on the application you might see crystals that only have Nd or ones that are almost entirely Ce with just a pinch of Nd.  Pure Nd gives a color shifting purple-pink color while pure Ce gives a rich fluorescent yellow color--when the two are mixed you get an unusual pink, peach or golden yellow color depending on proportions that shifts depending on the lighting.  These stones also show unusual dual fluorescence, with a mix of bright yellow and pink under shortwave UV and yellow-green under both blue light and shortwave UV.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCTH YAG is used in far infrared lasers for a variety of purposes including medical procedures and meteorological measurements.  \u003c\/span\u003eLike normal Cr YAG (aka Christmas Garnet) it has a super rich green base color, but the addition of thulium quenches the fluorescence, allowing it to be absorbed by the holmium instead of released as red light. This means the base color does not have to compete with a red glow and comes out even richer and purer, giving it a very rich and vivid color.  Some of these are rods with polished ends, others are square and likely rod blanks (? or maybe just square rods).\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Green CTH YAG Rod 3.9mm diameter 130-150mm Long","offer_id":48362271605024,"sku":"Rod_CTH_3.9_130","price":48.0,"currency_code":"USD","in_stock":true},{"title":"Green CTH YAG Square rod 4.4mm 130-150mm Long","offer_id":48362283630880,"sku":"Rod_CTH_Sq_4.4_130","price":55.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter Under 10mm Long Matte Finish","offer_id":50535697121568,"sku":"Rod_NdYAG_6_Sub10_M","price":5.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter 10-20mm Long Matte Finish","offer_id":50239683461408,"sku":"Rod_NdYAG_6_10_M","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter 20-30mm Long Matte Finish","offer_id":50239683494176,"sku":"Rod_NdYAG_6_20_M","price":12.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter 30-40mm Long Matte Finish","offer_id":50239683526944,"sku":"Rod_NdYAG_6_30_M","price":18.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter 40-50mm Long Matte Finish","offer_id":50239683559712,"sku":"Rod_NdYAG_6_40_M","price":24.0,"currency_code":"USD","in_stock":true},{"title":"Pink Rod Segment 6-7mm Diameter 50-60mm Long Matte Finish","offer_id":50239683592480,"sku":"Rod_NdYAG_6_50_M","price":30.0,"currency_code":"USD","in_stock":true},{"title":"Golden Rod Segment 5.9-7mm Diameter 15-22mm Long","offer_id":48210041798944,"sku":"Rod_CeNdYAG_5.9_15","price":25.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/20240429_162415.jpg?v=1714430062"},{"product_id":"dusk-purple-laser-garnet-custom-coffin-cut-25ct","title":"Dusk Purple Laser Garnet Custom Coffin Cut 25ct","description":"\u003cp\u003eThis is a coffin shaped lab-grown laser garnet weighing 25 ct and measuring 20 x 13.6 mm.  I cut this one myself in my own 'Dracula's Coffin' design.\u003cbr\u003e\u003cbr\u003eThis is an unusual laser garnet, cut from the very tip of a crystal with some odd impurity which gives it a purple-grey color instead of the usual pink.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Default Title","offer_id":49373147595040,"sku":"TH_Faceted","price":425.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/coffin1.jpg?v=1728626075"},{"product_id":"samarium-yag-orange-glow-lab-garnet","title":"Samarium YAG, Orange Glow Lab Garnet","description":"\u003cp\u003eThese are orange glowing samarium YAG (Yttrium Aluminum Garnet) with an orange-yellow base color and strong orange fluorescence. Each individual stone is labelled with its carat weight and letter in the photo and they can be purchased individually.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThis is an unusual lab garnet, samarium-doped YAG.  This material is mostly used for measuring pressure in high-pressure diamond anvil experiments--the color of its fluorescence actually changes depending on how much pressure it is feeling.  It is an uncommon material so we actually convinced one of our suppliers to grow a crystal of it for us--they had never grown Sm:YAG before so it is an experimental boule.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWith a hardness of 8.5, SmYAG is ideal for use in all kinds of jewelry.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Round, 3mm, avg 0.15ct","offer_id":51270064898336,"sku":"Gem_YAGSm_Rnd_3","price":11.0,"currency_code":"USD","in_stock":false},{"title":"Round, 4mm, avg 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8.65ct","offer_id":51485293445408,"sku":"Gem_YagNd_03220260414","price":187.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 14.1×10.1mm, 11.2ct","offer_id":51485293478176,"sku":"Gem_YagNd_03320260414","price":233.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 12.9×11mm, 11.65ct","offer_id":51485293510944,"sku":"Gem_YagNd_03420260414","price":241.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 14×10.9mm, 12.95ct","offer_id":51485293543712,"sku":"Gem_YagNd_03520260414","price":263.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 14×11mm, 13.05ct","offer_id":51485293576480,"sku":"Gem_YagNd_03620260414","price":265.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 13.9×11mm, 13.35ct","offer_id":51485293609248,"sku":"Gem_YagNd_03720260414","price":270.0,"currency_code":"USD","in_stock":true},{"title":"Rectangle, 13.9×11.9mm, 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https:\/\/www.youtube.com\/shorts\/nmVXg4lpgDI\u003c\/p\u003e\n\u003cp\u003eIn addition to the main chip it got a couple more at open sauce, but they are all minor and the stone still sparkles like crazy!\u003cbr\u003e\u003cbr\u003eThis is an unusual laser garnet, cut from the very tip of a crystal with some odd impurity which gives it a purple-grey color instead of the usual pink.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Default Title","offer_id":50245037326624,"sku":"TH_Faceted","price":725.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/pommel3.jpg?v=1758950608"},{"product_id":"chipped-axinite","title":"Chipped Axinite 3.75ct","description":"\u003cp\u003eThis is a rare natural gem known as Axinite--I don't cut a lot of natural stones but axinite is one of my favorites.  Unfortunately this stone chipped on me at the end, with a flake coming right off the culet.  It still looks neat, and has some natural needle inclusions as well.  It weighs in at 3.75ct\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Default Title","offer_id":50741037400352,"sku":"TH_Faceted","price":175.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/IMG_0004_14abade8-98d9-43b1-b35b-7e12b07d8597.jpg?v=1758950894"},{"product_id":"dusk-purple-laser-garnet-custom-coffin-cut-77ct","title":"Dusk Purple Laser Garnet Custom Coffin Cut 77ct","description":"\u003cp\u003eThis is a coffin cut lab-grown laser garnet weighing in at 77 ct and measuring 29 x 24 mm.  I cut this one myself in my new 'Glitter Coffin' design.\u003cbr\u003e\u003cbr\u003eThis is an unusual laser garnet, cut from the very tip of a crystal with some odd impurity which gives it a purple-grey color instead of the usual pink.  It fades from a deep blue at the bottom to a lighter purple at the top, and changes to green-blue under fluorescent lighting.  It also has a hint of internal haze which gives it a unique look.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Default Title","offer_id":50786178203936,"sku":"TH_Faceted","price":950.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6794\/0384\/files\/front4thisone.jpg?v=1760082217"},{"product_id":"calibrated-fantasy-cut-laser-garnets","title":"Calibrated Fantasy Cut Laser Garnets, Neodymium and Cerium YAG","description":"\u003cp\u003eThese are calibrated fantasy cut laser garnets (Nd+Ce:YAG) with concave facets.  They come in violet and gold (depending on the ratio of Ce to Nd) and have variable fluorescence including yellow, pink, red and violet.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe laser garnets were grown varying chemistries, creating different colors ranging from pink to orange to gold to green,  And the fluorescence has multiple colors too, with some stones showing both pink AND yellow at the same time.  Some of these have bubbles, a natural consequence of the growth method that produces them and one of the reasons they didn't make it into lasers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWith a hardness 8.5, YAG laser garnets are ideal for use in all kinds of jewelry.\u003c\/p\u003e","brand":"Turtle's Hoard","offers":[{"title":"Gold \/ 8.2mm Round 3.3ct","offer_id":50834422006048,"sku":"Fant_YAGCeNd_Rnd_8.2","price":75.0,"currency_code":"USD","in_stock":false},{"title":"Gold \/ 9mm Round 4.5ct","offer_id":50834422038816,"sku":"Fant_YAGCeNd_Rnd_9","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ 9.3mm Round avg 4.6ct","offer_id":50834422071584,"sku":"Fant_YAGCeNd_Rnd_9.3","price":95.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ 9.7mm Round avg 5.3ct","offer_id":50834422104352,"sku":"Fant_YAGCeNd_Rnd_9.7","price":106.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ 10mm Round avg 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stones, click here!\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNote that the smaller squares can sometimes be a bit more trapezoidal, they have been discounted accordingly.\u003c\/p\u003e\n\u003cp\u003eThis is pure Nd:YAG, not the material codoped with Cerium, so you won't see any fluorescence under longwave UV (though the pale green\/white under shortwave is still present).\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eNd YAG has been used in lasers since 1964. It is still the most classic and widely-used variety. 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It is still the most classic and widely-used variety. 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Some of the material we get is zoned, and careful cutting can put a fluorescent pink zone at the tip, giving a cool eye effect under UV.  Depending on the exact size of the zone the eye will be bigger or smaller, and it can reflect in really cool ways.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eYAG has a high hardness of 8.25-8.5 and no durability issues. 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