[{"data":1,"prerenderedAt":281},["ShallowReactive",2],{"header-nav-data":3,"paper-en-extremely-rare-hellandite-inclusion-found-in-a-mogok-ruby":226,"related-papers-en":252},{"reports":4,"labs":108},[5,35,54,72,90],{"id":6,"slug":7,"name":8,"name_zh":9,"tagline":10,"tagline_zh":11,"category":12,"category_zh":12,"is_published":13,"sort_order":14,"created_at":15,"last_updated_at":16,"available_categories":17,"available_locations":21,"images":26},5,"guild-folio","GUILD FOLIO","高级报告","FOLIO Report is a professionally profound and uniquely insightful gemological document, meticulously bespoke for collector-grade jewelry and presented as a premium, book-bound masterpiece within an elegant gift box.","FOLIO 报告是一份具有专业深度和独特见解的宝石学报告，为收藏级珠宝精心定制，并以高级精装书卷的形式呈现在优雅的礼盒中。",null,true,70,"2026-02-06T11:31:22","2026-03-30T17:25:34",[18,19,20],"colored-stones","feicui","pearl",[22,23,24,25],"china-mainland","thailand","sri-lanka","hongkong",[27,31],{"id":28,"image_url":29,"image_type":30},10,"https://project-static.guildgemedu.com/project/b85464b6-14f4-4346-8fe3-4fbb30faf542.png","transparent_clean_shot",{"id":32,"image_url":33,"image_type":34},16,"https://project-static.guildgemedu.com/project/1aadc859-3c3f-43cc-80ac-318a4d52b457.jpg","atmospheric_contextual",{"id":36,"slug":37,"name":38,"name_zh":39,"tagline":40,"tagline_zh":41,"category":12,"category_zh":12,"is_published":13,"sort_order":42,"created_at":43,"last_updated_at":44,"available_categories":45,"available_locations":46,"images":47},1,"standard-report","Standard Report","常规检测报告","Standard Report provides a versatile diagnostic framework for all colored gemstone varieties, delivering critical data on identification, treatment status, and color grading to establish a comprehensive profile for every specimen.","常规报告为彩色宝石品种提供了一个多功能的鉴定框架，提供关于鉴定、优化处理和颜色分级的关键数据，为每一颗标本建立全面的档案。",50,"2026-02-06T11:07:09","2026-03-30T17:18:27",[18,19],[23,24,25,22],[48,51],{"id":49,"image_url":50,"image_type":30},13,"https://project-static.guildgemedu.com/project/72303f7d-3498-4f8f-b084-dfdd23a8cb88.png",{"id":52,"image_url":53,"image_type":34},14,"https://project-static.guildgemedu.com/project/b3bbc130-04c4-477f-81d9-512ba6491353.jpg",{"id":55,"slug":56,"name":57,"name_zh":58,"tagline":59,"tagline_zh":60,"category":12,"category_zh":12,"is_published":13,"sort_order":61,"created_at":62,"last_updated_at":63,"available_categories":64,"available_locations":65,"images":66},3,"pearl-grading-report","Pearl Grading Report","珍珠分级鉴定报告","It offers a comprehensive gemological analysis for all pearl categories, featuring a structured four-part layout—Certificate Information, Pearl Information, Identification Details, and Key Conclusions—to cover every essential detail for buyers.","该报告为所有珍珠类别提供全面的宝石学分析，采用结构化的四部分布局——证书信息、珍珠信息、检测细节和关键结论——涵盖消费者关注的每一个核心细节。",30,"2026-02-06T11:25:33","2026-03-30T17:22:39",[20],[22],[67,69],{"id":6,"image_url":68,"image_type":34},"https://project-static.guildgemedu.com/project/b6d3b2d1-cdd9-42dd-be4d-75ded1bfae09.jpg",{"id":70,"image_url":71,"image_type":30},6,"https://project-static.guildgemedu.com/project/6c4c7330-51e8-4b2e-af46-f217e3a6e0e5.png",{"id":73,"slug":74,"name":75,"name_zh":76,"tagline":77,"tagline_zh":78,"category":12,"category_zh":12,"is_published":13,"sort_order":79,"created_at":80,"last_updated_at":81,"available_categories":82,"available_locations":83,"images":84},2,"dossier-report","Dossier Report","Dossier报告","Dossier Report is a streamlined gemological document specifically engineered for colored stones under one carat, offering highly efficient identification, color grading, and origin determination across all gemstone varieties.","Dossier 报告是专为一克拉以下的彩色宝石设计的精简版宝石证书，为各类宝石提供高效的鉴定、颜色分级和产地鉴定服务。",25,"2026-02-06T11:22:28","2026-03-30T17:21:00",[18],[22,23,24,25],[85,87],{"id":55,"image_url":86,"image_type":34},"https://project-static.guildgemedu.com/project/77d5bd95-75cd-423d-aea9-0f276bee3e61.jpg",{"id":88,"image_url":89,"image_type":30},4,"https://project-static.guildgemedu.com/project/bfca818a-3561-4679-8b22-e1da9bf98dd5.png",{"id":70,"slug":91,"name":92,"name_zh":93,"tagline":94,"tagline_zh":95,"category":12,"category_zh":12,"is_published":13,"sort_order":96,"created_at":97,"last_updated_at":98,"available_categories":99,"available_locations":100,"images":101},"prestige-report","Prestige Report","尊享报告","GUILD Prestige Report is a sophisticated gemological document tailored for high-end colored stones and pearls, offering a deep-dive analysis of a gemstone’s aesthetic dimensions and providing a unique, individualized evaluation for every specimen.","GUILD 尊享报告是为高端彩色宝石和珍珠量身定制的高级宝石报告，提供对宝石美学维度的深度分析，并为每一件标本提供独特的个体化评价。",20,"2026-02-06T11:33:19","2026-03-30T17:47:36",[18,19],[22,23,24,25],[102,105],{"id":103,"image_url":104,"image_type":34},11,"https://project-static.guildgemedu.com/project/10ac604a-d1c2-49f4-bafe-24ada49cfaa0.jpg",{"id":106,"image_url":107,"image_type":30},12,"https://project-static.guildgemedu.com/project/3fd95c04-17fe-40e1-a57e-181f838d6211.png",[109,129,147,162,178,194,209],{"id":36,"lab_id":110,"name":111,"name_zh":112,"city":113,"city_zh":114,"country":115,"country_zh":116,"address":117,"address_zh":117,"phone":118,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":121,"city_image_url":122,"interior_images":123,"is_published":13,"sort_order":126,"created_at":127,"last_updated_at":128},"sri-lanka-laboratory","Sri Lanka Laboratory","斯里兰卡实验室","Beruwala","贝鲁瓦拉","Sri Lanka","斯里兰卡","3/4/5/6 Floor, Zam Gems Building, 44/1, Sheik Fassy Mawatha, China Fort, Beruwala, Sri Lanka","+0094 342214443","info@guildgemlab.com","","https://project-static.guildgemedu.com/project/bbf95b5c-699a-4aa1-9e2e-37650d1df384.jpg","https://project-static.guildgemedu.com/project/07415349-1198-4c45-b855-1c0baf069e4b.png",[124,125],"https://project-static.guildgemedu.com/project/1ecc8af1-f6b1-406d-9c56-f232e1606e3c.png","https://project-static.guildgemedu.com/project/0be76daf-5ca6-47ac-88e8-3e1405d5c35b.png",60,"2026-03-10T17:00:14","2026-03-17T16:57:14",{"id":70,"lab_id":130,"name":131,"name_zh":132,"city":133,"city_zh":134,"country":135,"country_zh":136,"address":137,"address_zh":138,"phone":139,"email":140,"working_hours":120,"working_hours_zh":120,"cover_image_url":141,"city_image_url":142,"interior_images":143,"is_published":13,"sort_order":144,"created_at":145,"last_updated_at":146},"bangkok-laboratory","Bangkok Laboratory","曼谷实验室","Bangkok","曼谷","Thailand","泰国","Room No. B25BC, B1 floor, Jewelry Trade Center (JTC) Building, 919/1 Si Lom Rd, Silom, Bang Rak, Bangkok, Thailand","Room No. B25BC, B1 floor, Jewelry Trade Center (JTC) Building, 919/1 Silom road, Silom, Bangrak, Bangkok, Thailand., 10500","+66 (0) 21265408","fangjuan@guildgemlab.com","https://project-static.guildgemedu.com/project/92c49c5b-75c7-4adf-ae2b-fdf21b930dec.png","https://project-static.guildgemedu.com/project/2b1c353d-5f67-42a3-814a-8337de6f70e1.jpg",[],35,"2026-03-10T17:14:49","2026-03-16T16:44:33",{"id":73,"lab_id":148,"name":149,"name_zh":150,"city":151,"city_zh":152,"country":153,"country_zh":154,"address":155,"address_zh":155,"phone":156,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":157,"city_image_url":158,"interior_images":159,"is_published":13,"sort_order":61,"created_at":160,"last_updated_at":161},"los-angeles-laboratory","Los Angeles Laboratory","洛杉矶实验室","Los Angeles","洛杉矶","United States","美国","550 South Hill Street, Suite 1188, Los Angeles, CA90013, USA","+1 2136240137","https://project-static.guildgemedu.com/project/ea476e65-bb43-4ce4-8189-133c794a861a.jpg","https://project-static.guildgemedu.com/project/b6153020-c94c-4bcc-9df9-0fc39e5d9fd2.jpg",[],"2026-03-10T17:01:22","2026-03-17T16:57:45",{"id":55,"lab_id":163,"name":164,"name_zh":165,"city":166,"city_zh":167,"country":168,"country_zh":169,"address":170,"address_zh":171,"phone":172,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":173,"city_image_url":174,"interior_images":175,"is_published":13,"sort_order":79,"created_at":176,"last_updated_at":177},"hong-kong-laboratory","Hong Kong Laboratory","香港实验室","Hong Kong","香港","China","中国","Flat 512B,Fu Hang Industrial Building, 1 Hok Yuen Street East, Hung Hom, Kowloon City District, Hong Kong Special Administrative Region","香港九龙城区红磡鹤园东街1号富恒工业大厦512B室","+852 59751280","https://project-static.guildgemedu.com/project/a8009f44-a00a-406c-9a76-b690abb00f16.jpg","https://project-static.guildgemedu.com/project/e69f75d5-665f-4536-82ce-3590737f11d2.jpg",[],"2026-03-10T17:05:06","2026-03-19T09:42:21",{"id":88,"lab_id":179,"name":180,"name_zh":181,"city":182,"city_zh":183,"country":168,"country_zh":169,"address":184,"address_zh":185,"phone":186,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":187,"city_image_url":188,"interior_images":189,"is_published":13,"sort_order":191,"created_at":192,"last_updated_at":193},"shenzhen-laboratory","Shenzhen Laboratory","深圳实验室","Shenzhen","深圳","Room 3C08, Addcon Building, Shuibei 1st Road, Luohu District, Shenzhen, Guangdong Province, China","深圳市 罗湖区 翠竹街道 翠锦社区 翠竹路 2099号 爱得康大厦 三层 C08","+86 4008866175","https://project-static.guildgemedu.com/project/bbe15c7b-ced1-41e2-bd1e-ce12300e662b.jpg","https://project-static.guildgemedu.com/project/d0f51c46-8cdf-4505-a1b5-e75ec1cdb561.jpg",[190],"https://project-static.guildgemedu.com/project/f215d30f-ea6c-4b5f-beb6-793cffbcf0ca.png",23,"2026-03-10T17:10:22","2026-03-17T17:29:01",{"id":6,"lab_id":195,"name":196,"name_zh":197,"city":198,"city_zh":199,"country":168,"country_zh":169,"address":200,"address_zh":201,"phone":202,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":203,"city_image_url":204,"interior_images":205,"is_published":13,"sort_order":96,"created_at":207,"last_updated_at":208},"zhuji-laboratory","Zhuji Laboratory","诸暨实验室","Zhuji","诸暨","Rooms B0419-B0421,  Building B04,  Phase 1 Market,  East China International Jewelry City,  Shanxiahu Town, Zhuji City, Shaoxing City, Zhejiang Province, China","浙江省 绍兴市 诸暨市 山下湖镇 华东国际珠宝城一期市场 B04栋 B0419-B0421","+86 133 0231 0256","https://project-static.guildgemedu.com/project/b6778c28-4699-4fce-82ad-4fea005d3404.jpg","https://project-static.guildgemedu.com/project/6bd5b54f-9299-4218-9e48-5fb50140a83d.jpg",[206],"https://project-static.guildgemedu.com/project/ab2a559d-a0bb-4272-bed5-d9616e921a0d.png","2026-03-10T17:12:13","2026-03-20T15:25:06",{"id":210,"lab_id":211,"name":212,"name_zh":213,"city":214,"city_zh":215,"country":168,"country_zh":169,"address":216,"address_zh":217,"phone":218,"email":119,"working_hours":120,"working_hours_zh":120,"cover_image_url":219,"city_image_url":220,"interior_images":221,"is_published":13,"sort_order":96,"created_at":224,"last_updated_at":225},7,"guangzhou-laboratory","Guangzhou Laboratory","广州实验室","Guangzhou","广州","Room 4095, Blue Port International Jewelry Trade Center, No. 300 Kangwang Middle Road, Liwan District, Guangzhou, Guangdong Province, China","广州市 荔湾区 康王中路 蓝港（国际）珠宝交易中心 4楼 4095","+86 181 3828 3849","https://project-static.guildgemedu.com/project/3f79c542-bf42-4dff-b1de-7d5281f42555.png","https://project-static.guildgemedu.com/project/43c9bae4-82b4-4c55-a39f-20f96ff606be.jpg",[222,223],"https://project-static.guildgemedu.com/project/c4d31919-3230-42a9-9fab-e00775bc93d2.jpg","https://project-static.guildgemedu.com/project/d69902ea-0d71-4d3c-bbfd-72bfe1f19057.jpg","2026-03-10T17:19:56","2026-03-20T17:41:24",{"slug":227,"content_type_name":228,"is_zh_open":13,"is_en_open":13,"title":229,"content":230,"excerpt":231,"title_en":229,"content_en":230,"excerpt_en":231,"featured_image_url":232,"cover_position":233,"is_featured":234,"is_published":13,"published_at":235,"published_by_name":236,"authors":237,"venue":238,"paper_published_date":239,"citation":240,"paper_type":241,"last_updated_at":242,"last_updated_by_name":236,"id":243,"created_at":239,"is_deleted":234,"external_links":244,"attachments":247},"extremely-rare-hellandite-inclusion-found-in-a-mogok-ruby","papers","Extremely Rare Hellandite Inclusion Found in a Mogok Ruby","{\"blocks\":[{\"id\":\"0a70dd56d\",\"type\":\"paragraph\",\"data\":{\"text\":\"Recently, Guild Gem Laboratories (Shenzhen) received a 0.45 ct ruby (figure 1) for origin determination. Standard gemological testing, including a refractive index of 1.762–1.770 and specific gravity of approximately 4.00, and Fourier-transform infrared spectroscopy confirmed its identity as corundum. Additionally, energy-dispersive X-ray fluorescence revealed extremely low iron (247 ppmw) and relatively high chromium (3819 ppmw) and vanadium (448 ppmw) concentrations, consistent with those in marble-hosted samples.\"}},{\"id\":\"8ede455c2\",\"type\":\"paragraph\",\"data\":{\"text\":\"Microscopic observation showed a typical inclusion scene for Burmese ruby from Mogok, including nested concentrations of fine, long to short rutile needles (figure 2) and irregular calcite crystals (figure 3). To our surprise, two transparent brownish crystals (figure 4) were observed. Their slightly corroded state indicated these crystal inclusions’ protogenetic origin. Micro-Raman spectroscopy using 473 nm laser excitation produced some interesting results. Raman analysis showed several distinct peaks at 207, 238, 298, 317, 349, 423, 475, 574, 793, 868, 987, and 1018 cm–1, consistent with those of hellandite according to the RRUFF database (figure 5; see B. Lafuente et al., 2015, https://rruff.info/about/downloads/HMC1-30.pdf). These hellandite inclusions are rarely observed in ruby from any origin.\"}},{\"id\":\"7853c3ff9\",\"type\":\"paragraph\",\"data\":{\"text\":\"Hellandite, a rare borosilicate mineral with the proposed ideal formula of (Ca, REE)4(Y, Ce)2Al2(B4Si4O22)(OH)2, comes in various colors, including colorless, brown, brownish red, gray, green, and yellow. First found in granitic pegmatite in Norway, hellandite belongs to the monoclinic crystal system. Its crystal structure was determined on a specimen from Predazzo, Italy, and described as B4Si4O22 chains parallel to the c-axis (M. Mellini and S. Mellini, “Hellandite: A new type of silicoborate chain,” American Mineralogist, Vol. 62, No. 1-2, 1977, pp. 89–99).\"}},{\"id\":\"2413b28a8\",\"type\":\"paragraph\",\"data\":{\"text\":\"Myanmar’s ruby deposits occur in marbles intercalated with gneisses that are sometimes intruded by granitoids (G. Giuliani and L.A. Groat, “Geology of corundum and emerald gem deposits: A review,” Winter 2019 G&G, pp. 464–489). Therefore, we speculate that hellandite crystals in the granitoids intruding gneiss were captured by ruby when the ruby formed.\"}},{\"id\":\"f2e78c3a6\",\"type\":\"paragraph\",\"data\":{\"text\":\"To our knowledge, this is the first time hellandite has been observed in ruby. This finding allows for a better understanding of included minerals in the ruby from the geological setting of the Mogok mine.\"}},{\"id\":\"9587dd33c\",\"type\":\"paragraph\",\"data\":{\"text\":\"Xueying Sun, Yujie Gao (peter.gao@guilgemlab.com), and Qi Han\"}},{\"id\":\"753f5e863\",\"type\":\"paragraph\",\"data\":{\"text\":\"Guild Gem Laboratories, Shenzhen, China\"}},{\"id\":\"84d19b06c\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/c27b7a690cb24c2289a3f58ea1eec669.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"02cfcc1fa\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 1. This 0.45 ct oval-shaped ruby, measuring 4.25 × 3.65 × 3.24 mm, exhibited a highly saturated red color. Photo by Huixin Zhao.\"}},{\"id\":\"002d60f76\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/5cc2e33f673d4bffa949c8203af731f6.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"cf9fb6901\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 2. Dense, nested concentrations of silk in the ruby suggest an origin of Mogok, Myanmar. Photomicrograph by Huixin Zhao; field of view 1.13 mm.\"}},{\"id\":\"7492b9d15\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/d4ad0a339a53487eb94575330768940d.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"baa91a464\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 3. A series of irregular calcite crystals in the ruby from Mogok. Photomicrograph by Huixin Zhao; field of view 1.84 mm.\"}},{\"id\":\"a5291e573\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/6b49215d7b5f4dd9adb9dfd72d3f74c3.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"4bfc2d91b\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 4. These two transparent brownish hellandite crystals found in a Mogok ruby possibly represent a new ruby inclusion. Photomicrograph by Huixin Zhao; field of view 1.70 mm.\"}},{\"id\":\"27918f293\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/99196e6c66214a718ee34f7d576924b7.png\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"283efe7db\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 5. Raman analysis identified the two transparent brownish crystals shown in figure 4 as hellandite. Spectra are offset for clarity.\"}}]}","Recently, Guild Gem Laboratories (Shenzhen) received a 0.45 ct ruby (figure 1) for origin determination. Standard gemological testing, including a refractive index of 1.762–1.770 and specific gravity of approximately 4.00, and Fourier-transform infrared spectroscopy confirmed its identity as corundum. Additionally, energy-dispersive X-ray fluorescence revealed extremely low iron (247 ppmw) and relatively high chromium (3819 ppmw) and vanadium (448 ppmw) concentrations, consistent with those in marble-hosted samples.","https://project-static.guildgemedu.com/project/237e800e-46b5-40c0-938d-b4033781918a.jpg","center",false,"2026-05-27T14:16:20","samuel","Sun Xueying, Gao Yujie, Han Qi","Gems & Gemology","2022-12-30T00:00:00","Sun Xueying, Gao Yujie, Han Qi. (2022) Extremely Rare Hellandite Inclusion Found in a Mogok Ruby. Gems & Gemology, Vol. 58, No. 4, pp. 510-512.","journal","2026-05-27T14:18:03",86,[245],{"id":32,"url":246,"title":238},"https://www.gia.edu/gems-gemology/winter-2022-gemnews-extremely-rare-hellandite-inclusion",[248],{"id":249,"url":250,"name":251},48,"https://project-static.guildgemedu.com/project/87149eda-4258-423d-ad22-f38da4b2cb0d.pdf","2022_Extremely rare hellandite inclusion found in a Mogok ruby_Sun_Gems-Gemology.pdf",[253,266],{"id":254,"slug":255,"content_type":228,"title":256,"title_en":256,"excerpt":257,"excerpt_en":257,"featured_image_url":258,"cover_position":233,"is_featured":234,"is_published":13,"is_zh_open":13,"is_en_open":13,"published_at":259,"created_at":260,"authors":261,"venue":262,"paper_published_date":260,"citation":263,"paper_type":241,"external_links":264,"attachments":265},97,"remarkable-hexagram-pattern-produced-by-a-trapiche-emerald-from-colombia","Remarkable Hexagram Pattern Produced by a Trapiche Emerald from Colombia","The unique trapiche emeralds from Colombia exert a fascination for many gemologists. A special trapiche emerald weighing as large as 22.63 ct has ever been submitted to Guild Gem Laboratories for identification (figure 1). Standard gemological testing showed properties consistent with emerald, with a uniaxial negative optic character and a refractive index of approximately 1.57. Chemical analysis and gemological observation of internal features determined the origin of this stone to be Colombia.","https://project-static.guildgemedu.com/project/2b989ce0-0640-4ee5-95ee-56619fe25bc9.jpg","2026-09-03T09:57:37","2026-01-01T00:00:00","Sun Xueying, Gao Yujie, Deng Kaiyin","The Journal of Gemmology","[25] Sun Xueying, Gao Yujie, Deng Kaiyin. (2023) ‘Star of David’ Pattern Produced by a Trapiche Emerald from Colombia. The Journal of Gemmology, Vol. 38, No. 7, pp. 652-653.",[],[],{"id":126,"slug":267,"content_type":228,"title":268,"title_en":268,"excerpt":269,"excerpt_en":269,"featured_image_url":270,"cover_position":233,"is_featured":234,"is_published":13,"is_zh_open":13,"is_en_open":13,"published_at":271,"created_at":272,"authors":273,"venue":262,"paper_published_date":272,"citation":274,"paper_type":241,"external_links":275,"attachments":276},"sugar-nephrite-from-the-altun-mountains-xinjiang-china","'Sugar' Nephrite from the Altun Mountains, Xinjiang, China","Nephrite has a long history and profound culturalsignificance in China, along with a vast consumer market. In July 2025, author YG conducted a field trip to nephrite mining areas in the Xinjiang Uygur...","https://project-static.guildgemedu.com/project/35494227-9275-4a4e-bb92-a7077e0b8631.jpg","2026-03-20T16:04:57","2025-03-01T00:00:00","Gao Yujie, Huang Tiantian, Lu Qi.","[58] Gao Yujie, Huang Tiantian, Lu Qi. ‘Sugar’ Nephrite from the Altun Mountains, Xinjiang, China. (2025) The Journal of Gemmology, Vol. 39, No. 7, pp. 611-613.",[],[277],{"id":278,"url":279,"name":280},26,"https://project-static.guildgemedu.com/project/0c432edc-093b-4c46-b9fb-6fbe1caabf95.pdf","2025_‘Sugar’ Nephrite from the Altun Mountains, Xinjiang, China_Gao_JoG.pdf",1789718513305]