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Etch Pits in Heliodor and Green Beryl from the Volyn Pegmatites, Northwest Ukraine: A Diagnostic Feature 乌克兰西北部Volyn伟晶岩中Heliodor和绿色绿柱石的蚀刻坑:诊断特征
3区 地球科学
Gems & Gemology Pub Date : 2023-11-01 DOI: 10.5741/gems.59.3.324
Gerhard Franz, Oleksii A. Vyshnevskyi, Volodymyr M. Khomenko, Peter Lyckberg, Ulrich Gernert
{"title":"Etch Pits in Heliodor and Green Beryl from the Volyn Pegmatites, Northwest Ukraine: A Diagnostic Feature","authors":"Gerhard Franz, Oleksii A. Vyshnevskyi, Volodymyr M. Khomenko, Peter Lyckberg, Ulrich Gernert","doi":"10.5741/gems.59.3.324","DOIUrl":"https://doi.org/10.5741/gems.59.3.324","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":"249 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Special Colors and Optical Effects of Oregon Sunstone: Absorption, Scattering, Pleochroism, and Color Zoning 俄勒冈太阳石的特殊颜色和光学效果:吸收、散射、多色性和颜色分区
3区 地球科学
Gems & Gemology Pub Date : 2023-11-01 DOI: 10.5741/gems.59.3.298
Shiyun Jin, Aaron C. Palke, Nathan D. Renfro, Ziyin Sun
{"title":"Special Colors and Optical Effects of Oregon Sunstone: Absorption, Scattering, Pleochroism, and Color Zoning","authors":"Shiyun Jin, Aaron C. Palke, Nathan D. Renfro, Ziyin Sun","doi":"10.5741/gems.59.3.298","DOIUrl":"https://doi.org/10.5741/gems.59.3.298","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":"236 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Yellow Sapphire: Natural, Heat-Treated, Beryllium-Diffused, and Synthetic 黄色蓝宝石:天然的、热处理的、铍扩散的和合成的
3区 地球科学
Gems & Gemology Pub Date : 2023-11-01 DOI: 10.5741/gems.59.3.268
John L. Emmett, Ungkhana Atikarnsakul, Jennifer Stone-Sundberg, Supharart Sangsawong
{"title":"Yellow Sapphire: Natural, Heat-Treated, Beryllium-Diffused, and Synthetic","authors":"John L. Emmett, Ungkhana Atikarnsakul, Jennifer Stone-Sundberg, Supharart Sangsawong","doi":"10.5741/gems.59.3.268","DOIUrl":"https://doi.org/10.5741/gems.59.3.268","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":"247 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Iolite from the Thor-Odin Dome, British Columbia, Canada: Geology, Chemical Composition, Inclusions, and Cause of Chatoyancy 加拿大不列颠哥伦比亚省thoro - odin Dome的橄榄石:地质、化学成分、包裹体和成因
3区 地球科学
Gems & Gemology Pub Date : 2023-11-01 DOI: 10.5741/gems.59.3.340
Philippe M. Belley
{"title":"Iolite from the Thor-Odin Dome, British Columbia, Canada: Geology, Chemical Composition, Inclusions, and Cause of Chatoyancy","authors":"Philippe M. Belley","doi":"10.5741/gems.59.3.340","DOIUrl":"https://doi.org/10.5741/gems.59.3.340","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":"239 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
History of Emerald Mining in the Habachtal Deposit of Austria, Part I 奥地利Habachtal矿床翡翠开采史（上）
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2022-02-01 DOI: 10.5741/gems.57.4.338
K. Schmetzer
{"title":"History of Emerald Mining in the Habachtal Deposit of Austria, Part I","authors":"K. Schmetzer","doi":"10.5741/gems.57.4.338","DOIUrl":"https://doi.org/10.5741/gems.57.4.338","url":null,"abstract":"eighteenth Samuel Goldschmidt, followed English 1895. The sources of emeralds used in Roman jewelry as well as jeweled pieces (including crowns and book covers) dating from antiquity to the Middle Ages and before the discovery of the Colombian emerald deposits in the sixteenth century remain an ongoing matter of controversy. Two potential localities dominate the discussion: the mines in the Eastern Desert of Egypt and the Habachtal deposit in Austria. The first published reference to the Habachtal emerald occurrence dates to 1797. The majority of publications from the nineteenth and twentieth centuries agree that Samuel Goldschmidt, a jeweler from Vienna, purchased the mountain area in which the Habachtal emerald occurrence is located and commenced mining soon thereafter, in the early 1860s. A later period from the mid-1890s to about 1914 is frequently mentioned, in which the mine was owned and worked by an English company. However, further details regarding both periods and the various transitions of ownership and further circumstances of emerald mining before World War I are rarely given and often are not consistent, and activities in the times before the 1860s and between 1870 and 1890 are obscure. Using a wide selection of materials from Austrian and German archives, largely unpublished, the author seeks to trace the history of the Habachtal mine through several centuries and to fill gaps left by existing publications.","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48004758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gemological Characterization of Peridot from Pyaung-Gaung in Mogok, Myanmar 缅甸莫卧的Pyaung Gaung橄榄石的宝石学特征
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2022-02-01 DOI: 10.5741/gems.57.4.318
Montira Seneewong-Na-Ayutthaya, Wassana Chongraktrakul, Tasnara Sripoonjan
{"title":"Gemological Characterization of Peridot from Pyaung-Gaung in Mogok, Myanmar","authors":"Montira Seneewong-Na-Ayutthaya, Wassana Chongraktrakul, Tasnara Sripoonjan","doi":"10.5741/gems.57.4.318","DOIUrl":"https://doi.org/10.5741/gems.57.4.318","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":"1 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41670518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Blue Sapphires from Mogok, Myanmar: A Gemological Review 缅甸莫卧克蓝蓝宝石：宝石学综述
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2022-02-01 DOI: 10.5741/gems.57.4.292
Wasura Soonthorntantikul, Ungkhana Atikarnsakul, W. Vertriest
{"title":"Blue Sapphires from Mogok, Myanmar: A Gemological Review","authors":"Wasura Soonthorntantikul, Ungkhana Atikarnsakul, W. Vertriest","doi":"10.5741/gems.57.4.292","DOIUrl":"https://doi.org/10.5741/gems.57.4.292","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48130660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Purple Gem Spinel from Vietnam and Afghanistan: Comparison of Trace Element Chemistry, Cause of Color, and Inclusions 越南和阿富汗紫色宝石尖晶石:微量元素化学、颜色成因和包裹体的比较
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2021-11-01 DOI: 10.5741/gems.57.3.228
P. Belley, Aaron C. Palke
{"title":"Purple Gem Spinel from Vietnam and Afghanistan: Comparison of Trace Element Chemistry, Cause of Color, and Inclusions","authors":"P. Belley, Aaron C. Palke","doi":"10.5741/gems.57.3.228","DOIUrl":"https://doi.org/10.5741/gems.57.3.228","url":null,"abstract":"GEMS & GEMOLOGY FALL 2021 Gem-quality spinel occurs in a variety of colors as a result of a diverse array of possible chromophores and chromophore combinations (Schmetzer et al., 1989; Andreozzi et al., 2019): combinations of Fe2+ and Fe3+ (light blue/violet to green to black with increasing Fe concentration; Hålenius et al., 2002); Co2+ (blue; Shigley and Stockton, 1984; D’Ippolito et al., 2015); Cr3+ (red); and V3+ (orange; Andreozzi et al., 2019). Vivid spinels colored by cobalt (blue) and chromium (red) are particularly sought after in the gem trade. Purple spinel (figure 1) is generally colored by Fe or by a combination of Cr, V, and subordinate Fe (Andreozzi et al., 2019). The current study compares the chemical composition and color of two purple spinel samples, from Vietnam and Afghanistan (figure 2), to each other and in the PURPLE GEM SPINEL FROM VIETNAM AND AFGHANISTAN: COMPARISON OF TRACE ELEMENT CHEMISTRY, CAUSE OF COLOR, AND INCLUSIONS","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42549106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Internal Structures of Known Pinctada Maxima Pearls: Cultured Pearls from Operated Marine Mollusks 已知珠珠的内部结构:养殖的海洋软体动物珍珠
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2021-11-01 DOI: 10.5741/gems.57.3.186
Artitaya Homkrajae, Nanthaporn Nilpetploy, Areeya Manustrong, Nicholas Sturman, Kwanreun Lawanwong, Promlikit Kessrapong
{"title":"Internal Structures of Known Pinctada Maxima Pearls: Cultured Pearls from Operated Marine Mollusks","authors":"Artitaya Homkrajae, Nanthaporn Nilpetploy, Areeya Manustrong, Nicholas Sturman, Kwanreun Lawanwong, Promlikit Kessrapong","doi":"10.5741/gems.57.3.186","DOIUrl":"https://doi.org/10.5741/gems.57.3.186","url":null,"abstract":"GEMS & GEMOLOGY FALL 2021 P inctada maxima (the silveror gold-lipped pearl oyster), Pinctada margaritifera (the blacklipped pearl oyster), and Pinctada fucata (martensii) (“the akoya pearl oyster”) are the main mollusks of the Pinctada genus that are commercially farmed. They are routinely used to produce bead cultured (BC) pearls and, as a consequence, sometimes also produce non-bead cultured (NBC) pearls (Otter et al., 2014; Sturman et al., 2016; Nilpetploy et al., 2018a). P. maxima is the largest species in the genus (Scarratt et al., 2012) and generally requires a minimum two-year growth period to yield BC pearls with the thickest nacre layers of all BC pearls (Gervis and Sims, 1992; Cartier and Krzemnicki, 2016). Cultured pearls from the P. maxima mollusk are often referred to as “South Sea” in the market. Australia is the largest producer of white P. maxima (silver-lipped) cultured pearls, while Indonesia, Myanmar, and the Philippines are major producers of “golden” P. maxima (gold-lipped) cultured pearls. The farms producing these pearls are located between the Tropic of Cancer and the Tropic of Capricorn, which coincides with the native P. maxima mollusk’s geographic distribution. The silver-lipped shells are found mostly south of the equator, while the gold-lipped shells populate the region north of the equator (Strack, 2006). P. maxima mollusks used for pearl culturing production in Australia are predominantly wildcaught shells collected in accordance with the annual quota that takes the shell sizes into account (between 120 and 175 mm shell length) and allows fishing INTERNAL STRUCTURES OF KNOWN PINCTADA MAXIMA PEARLS: CULTURED PEARLS FROM OPERATED MARINE MOLLUSKS","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46992709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First Identification of Sudoite in Caribbean Ceramic-Age Lapidary Craftsmanship 苏多伊特在加勒比陶瓷时代的手工工艺中的首次鉴定
IF 2.6 3区 地球科学
Gems & Gemology Pub Date : 2021-11-01 DOI: 10.5741/gems.57.3.206
Alain Queffelec, L. Bellot‐Gurlet, E. Foy, Y. Lefrais, E. Fritsch
{"title":"First Identification of Sudoite in Caribbean Ceramic-Age Lapidary Craftsmanship","authors":"Alain Queffelec, L. Bellot‐Gurlet, E. Foy, Y. Lefrais, E. Fritsch","doi":"10.5741/gems.57.3.206","DOIUrl":"https://doi.org/10.5741/gems.57.3.206","url":null,"abstract":"","PeriodicalId":12600,"journal":{"name":"Gems & Gemology","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46064450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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