Journal of Gems & Gemmology最新文献_第5页

Selective Laser Melting (SLM) Technology for Jewelry Design and Its Application 首饰设计中的选择性激光熔化(SLM)技术及其应用

Journal of Gems & Gemmology Pub Date : 2020-12-12 DOI: 10.15964/J.CNKI.027JGG.2020.05.007

Le-xiu Sun, L. Hao, Wei Xiong, Yan Li

引用次数: 0

Interpretation of National Standard Hetian Yu — Testing and Classification 国家标准《和田雨——检测与分类》解读

Journal of Gems & Gemmology Pub Date : 2020-12-12 DOI: 10.15964/J.CNKI.027JGG.2020.05.002

X. Shen, Xinling Li, Wei Wei

引用次数: 0

Identification of Natural Type IIa Colourless Diamond with 270 nm Absorption Peak of UV-Visible Spectrum 用270 nm紫外可见吸收峰鉴别天然IIa型无色金刚石

Journal of Gems & Gemmology Pub Date : 2020-12-12 DOI: 10.15964/J.CNKI.027JGG.2020.05.006

Jingjing Chen, Yueping Luo

引用次数: 0

市场上“重结晶”(合成)刚玉的宝石学特征市场上“重结晶”(合成)刚玉的宝石学特征

Journal of Gems & Gemmology Pub Date : 2020-11-01 DOI: 10.15964/J.CNKI.027JGG.2020.06.002

付佳婧, 吕芳琳, 邵天, 李铄辰, 沈锡田

{"title":"市场上“重结晶”(合成)刚玉的宝石学特征","authors":"付佳婧, 吕芳琳, 邵天, 李铄辰, 沈锡田","doi":"10.15964/J.CNKI.027JGG.2020.06.002","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.06.002","url":null,"abstract":"自二十世纪末起, 珠宝市场上开始出现“再造”或“重结晶”宝石, 商家声称原材料为天然宝石碎片或粉末, 其生产成本高于使用化学合成原料的合成宝石, 为了厘清“重结晶”宝石的本质, 采用常规宝石学仪器、拉曼光谱仪、傅里叶变换红外光谱仪、紫外-可见吸收光谱仪和激光剥蚀电感耦合等离子体质谱仪对日本Anupam Gems公司销售的21颗“重结晶”刚玉样品进行测试分析。结果表明, 这批“重结晶”刚玉实际上是以化学合成材料为原料, 助熔剂法和焰熔法合成宝石, 被称为“重结晶”宝石来销售只是商家的一种营销手段。“重结晶”刚玉为单晶宝石, 黄色蓝宝石样品中均含有圆形气泡, 其中一颗样品颜色不均匀且含有半透明至不透明的无色或橙红色树枝状、网状包裹体, 除少量致色元素Ni外基本不含有其他微量元素, 而天然黄色蓝宝石通常含有大量的Fe且普遍存在微量元素如Mg、Ti、Ga和V等; 蓝色蓝宝石样品内部干净, Fe和Ga元素含量明显低于天然蓝色蓝宝石, 部分样品中还含有较多Be元素; 红宝石样品含有大量气泡和弯曲生长纹, 可见未结晶的熔融物质, 微量元素种类较少, 含量较低, 未测出Fe元素; “重结晶”变色刚玉内部干净。除此之外, 蓝色蓝宝石、红宝石及变色刚玉的红外光谱中都出现了3 309、3 231、3 186 cm-1焰熔法合成刚玉宝石的特征峰。","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":"20 1","pages":"9-19"},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80932556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectroscopic Feature and Identification Application of the Impurity and Inclusion in Type IIa HPHT Synthetic Diamond IIa型HPHT合成金刚石中杂质和夹杂物的光谱特征及鉴别应用

Journal of Gems & Gemmology Pub Date : 2020-11-01 DOI: 10.15964/J.CNKI.027JGG.2020.06.001

Ying Ma, Zhili Qiu, Yuqing Zhuang, Shuqi Lai, Taijin Lu, Xiaoqin Deng

{"title":"Spectroscopic Feature and Identification Application of the Impurity and Inclusion in Type IIa HPHT Synthetic Diamond","authors":"Ying Ma, Zhili Qiu, Yuqing Zhuang, Shuqi Lai, Taijin Lu, Xiaoqin Deng","doi":"10.15964/J.CNKI.027JGG.2020.06.001","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.06.001","url":null,"abstract":"In recent years, China has become the largest producer of type Ⅱa colourless HPHT synthetic diamonds. And the identification of type Ⅱa HPHT synthetic diamond has become a challenging task. This research attempted to find the evidence of identification for type Ⅱa HPHT synthetic diamonds. Diamond samples from the high pressure and high temperature (HPHT) manufacturers in China (HH, J, Z) were collected, from which the inclusions and the distribution of impurities of 11 typical type Ⅱa diamond samples produced in the past three years were studied. Two main points of understanding were obtained: (1) When the fluorescent colour and image of type Ⅱa diamond under DiamondviewTM and other equipments can not give clear identification evidence, the conical, black thread-like or thin tubular inclusions, the distribution of fine point inclusions, shapeless cohenite, hematite, and magnetite inclusions can be used as the reference for determining the new HPHT synthetic diamonds. (2) Some samples have impurity defects which can be tested, and their emission peaks and distributions which are related to Ni and B can be used as the contributory characteristics for determining HPHT synthetic diamonds.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":"287 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77144140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Individualized Inlay Design of Abnormal Amber Based on 3D Scanning Technique 基于三维扫描技术的异常琥珀个性化镶嵌设计

Journal of Gems & Gemmology Pub Date : 2020-05-01 DOI: 10.15964/J.CNKI.027JGG.2020.03.005

Xing-Yao Li, Yan Li, Yamei Wang, Wei Xiong, Chenxing Xin

引用次数: 1

Practice and Discussion on the Innovative Expression of Contemporary Material Language and Chinese Traditional Culture 当代物质语言与中国传统文化创新表达的实践与探讨

Journal of Gems & Gemmology Pub Date : 2020-03-01 DOI: 10.15964/J.CNKI.027JGG.2020.02.006

Sijia Tang, Ronghong Zhang

{"title":"Practice and Discussion on the Innovative Expression of Contemporary Material Language and Chinese Traditional Culture","authors":"Sijia Tang, Ronghong Zhang","doi":"10.15964/J.CNKI.027JGG.2020.02.006","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.02.006","url":null,"abstract":"How to carry forward the traditional Chinese culture in the new era is a widely concerned topic. By analyzing the current application of contemporary materials and the corresponding performance of works, the authors point out that the rich material language derived from the selection of concepts and the integration of contemporary aesthetics has become a mature way of contemporary art creation. Through the analysis of the current situation of Chinese traditional cultural expression works, it is pointed out that Chinese artists are gradually exploring the way to absorb nutrients from the treasure house of traditional culture and find the appropriate way of cultural inheritance through contemporary thinking and technology. Because the contemporary material language with a complete system can adapt to the different needs of emotional and style expression, the exploration of contemporary material language from the perspective of innovation can provide new ideas for the innovation of traditional Chinese culture. Finally, through the innovative practice of material technology and emotional expression, a new balance point between material technology and expression content was found, and a preliminary study on the application of contemporary material language was completed. The Chinese traditional culture with a long history can always find new value in each era, and the contemporary material language provides new inspiration for its inheritance and innovation.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":"96 1","pages":"48-54"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80386261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative Study of 3D Printing Technology and Traditional Jewelry Crafting Process 3D打印技术与传统珠宝工艺的比较研究

Journal of Gems & Gemmology Pub Date : 2020-01-01 DOI: 10.15964/J.CNKI.027JGG.2020.01.008

Qiong Liao

引用次数: 0

Gemmological Characteristic of Quartzose Jade by Metamorphism 变质石英玉的宝石学特征

Journal of Gems & Gemmology Pub Date : 2020-01-01 DOI: 10.15964/J.CNKI.027JGG.2020.01.005

Xiaolian Liu, Qing-xin Meng, Xihao Chen, Songliang Deng

{"title":"Gemmological Characteristic of Quartzose Jade by Metamorphism","authors":"Xiaolian Liu, Qing-xin Meng, Xihao Chen, Songliang Deng","doi":"10.15964/J.CNKI.027JGG.2020.01.005","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.01.005","url":null,"abstract":"The metamorphic quartzose jade in gemmology is reported for the first time. In this paper, the gemmological characteristics of the samples were summarized by means of polarizing microscope and reflecting microscope, electron probe, X-ray powder diffraction and infrared spectroscopy.The test results showed that the sample is composed of recrystallized quartz and a small amount of low-sodium feldspar. The quartz was a microcrystalline grain with a maximum particle size of 0.01 mm. Electron probe magnification 2 000× second electron image (SE) shows that the sample has a dense structure formed by 1—2 μm micron fine scales superposed with each other. The degree of crystallization of the sample decreases gradually from the shell to the transition layer to the interior and most of the internal quartz was cryptocrystalline and the grain boundaries could not be seen. The mass fraction of SiO2 in the quartz electron probe data is lower than the theoretical value. The total chemical composition of ilmenite is less than 100% due to the production of H2O during alteration.The infrared spectra showed obvious splitting near 900—1 200 cm-1 and 5 200 cm-1, which fully proved that the material was a kind of quartz jade formed by metamorphism that contains water.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":"13 1","pages":"33-38"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86353718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Creative Casting in Contemporary Jewelry 当代珠宝的创意铸造

Journal of Gems & Gemmology Pub Date : 2020-01-01 DOI: 10.15964/J.CNKI.027JGG.2020.01.009

Shuyu Wu

引用次数: 0