[{"data":1,"prerenderedAt":265},["ShallowReactive",2],{"header-nav-data":3,"paper-en-remarkable-hexagram-pattern-produced-by-a-trapiche-emerald-from-colombia":226,"related-papers-en":246},{"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":245},"remarkable-hexagram-pattern-produced-by-a-trapiche-emerald-from-colombia","papers","Remarkable Hexagram Pattern Produced by a Trapiche Emerald from Colombia","{\"blocks\":[{\"id\":\"f45491c7c\",\"type\":\"paragraph\",\"data\":{\"text\":\"Remarkable Hexagram in Trapiche Emerald. 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.\"}},{\"id\":\"758f1bd04\",\"type\":\"paragraph\",\"data\":{\"text\":\"As usual, this stone is cut as a cabochon with the basal plane orientated perpendicular to the c-axis and can be expressed as a hexagonal black core with six radiating green arms and dendrites. Microscopic observation showed amorphous black carbonaceous materials and fluid inclusions. Besides, abundant striations have been observed, which are perpendicular to the sides of the central hexagon in each arm, as illustrated in figure 2.\"}},{\"id\":\"bd9f39158\",\"type\":\"paragraph\",\"data\":{\"text\":\"Surprisingly, when viewing through either the top or bottom plane with a spotlight source, an exquisite and unique six-pointed geometric star called a hexagram caught the authors’ eyes (figure 3). Closer observation revealed that each edge of the hexagram was oriented perpendicular to the striations within the corresponding arm. We conjectured that the hexagram could be described as six sharp “eyes”. Parallel striations in each arm are responsible for one chatoyant effect, which also result in each edge of the hexagram accordingly. A schematic drawing of this situation is present in figure 4.\"}},{\"id\":\"ad383a4f4\",\"type\":\"paragraph\",\"data\":{\"text\":\"It is worthy to point out that special optical effects such as asterism and chatoyancy are normally consequent on the reflected light from the face-up dome of the cabochon stones and it is rare to see the geometric pattern due to the light transmitted through the gemstone. The hexagram pattern was only observed clearly at a certain distance between the sample and the table, which suggests that the distance equals to focal length and the table serves as the focal plane since the trapiche sample is fashioned into a convex lens shape.\"}},{\"id\":\"48466527e\",\"type\":\"paragraph\",\"data\":{\"text\":\"To our knowledge, this is the first time to discover the hexagram pattern created by a trapiche emerald. This founding may help advance our understanding of the chatoyancy effect and trapiche emerald.\"}},{\"id\":\"5fb741093\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/5f3532036b16495caeed4739ec00b678.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"e6ccc6268\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 1. A round-shaped trapiche emerald measuring 19.98×19.84×6.76 mm exhibits an attractive appearance. Photo by Kaiyin Deng, courtesy of LOVE SSULL.\"}},{\"id\":\"f2c91062c\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/a15a9027e0774dc88d975cc0582a7b48.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"45db642cc\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/5181b307b11840798ae1a20d0e7d9752.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"82c0da85f\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 2. Left: Abundant striations were perpendicular to the sides of the central hexagon in each arm, field of view 3.22 mm. Photomicrograph by Yizhi Zhao. Right: Illustration of the relationship between the striations and the core. Illustration by Xueying Sun.\"}},{\"id\":\"97dd86f1c\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/29b47073e258479aba79e76e05323315.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"caf9407ca\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 3. When viewing through the cambered surface with a spotlight source, a hexagram pattern appeared in the background. Photo by Kaiyin Deng.\"}},{\"id\":\"4522ebbb9\",\"type\":\"image\",\"data\":{\"src\":\"https://project-static.guildgemedu.com/docx-import/da0f229e9078422ca6a80ddd81d9ad4f.jpg\",\"caption\":\"\",\"width\":\"100%\"}},{\"id\":\"d46319e4f\",\"type\":\"paragraph\",\"data\":{\"text\":\"Figure 4. Illustration of the formation of the hexagram pattern. Since each side of this pattern was perpendicular to the striations in the corresponding arm, the hexagram may be the result of the chatoyancy effect caused by the striations. Illustration by Xueying Sun.\"}},{\"id\":\"3a3756da4\",\"type\":\"paragraph\",\"data\":{\"text\":\"Xueying Sun, Yujie Gao (peter.gao@guildgemlab.com), Kaiyin Deng\"}},{\"id\":\"c33a006c2\",\"type\":\"paragraph\",\"data\":{\"text\":\"Guild Gem Laboratories, Shenzhen, China\"}}]}","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","center",false,"2026-09-03T09:57:37","samuel","Sun Xueying, Gao Yujie, Deng Kaiyin","The Journal of Gemmology","2026-01-01T00:00:00","[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.","journal","2026-09-03T09:58:06",97,[],[],[247,250],{"id":243,"slug":227,"content_type":228,"title":229,"title_en":229,"excerpt":231,"excerpt_en":231,"featured_image_url":232,"cover_position":233,"is_featured":234,"is_published":13,"is_zh_open":13,"is_en_open":13,"published_at":235,"created_at":239,"authors":237,"venue":238,"paper_published_date":239,"citation":240,"paper_type":241,"external_links":248,"attachments":249},[],[],{"id":126,"slug":251,"content_type":228,"title":252,"title_en":252,"excerpt":253,"excerpt_en":253,"featured_image_url":254,"cover_position":233,"is_featured":234,"is_published":13,"is_zh_open":13,"is_en_open":13,"published_at":255,"created_at":256,"authors":257,"venue":238,"paper_published_date":256,"citation":258,"paper_type":241,"external_links":259,"attachments":260},"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.",[],[261],{"id":262,"url":263,"name":264},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",1789718513333]