Resultado da Busca
Há 20 horas · Role of GIA in Diamond Certification. Though many are considering lab-grown diamonds, their biggest concern is whether or not they are GIA-certified. The Gemological Institute of America, or GIA, is one of the world’s most reputable institutions for gemstones and jewellery and the ultimate diamond expert.
Há 3 dias · Todd’s Gems. Todd Wacks outlines how garnets believed to be “regular” Tanzanian rhodolite when discovered in the late 1980s turned out to be rare color-change pyropes instead. In this video, he demonstrates their strikingly intense pink-to-purple color change under different light sources. The gems were pinkish purple in daylight and ...
Há 4 dias · About Us. Mission Statement. Midwest Gemological Services is here to provide detailed, accurate and professional independent estate and insurance appraisals for all types of jewelry and watches to private and professional clients. Professional Titles. MGS’s gemological laboratory is fully portable and is available for “on-site” appraisals.
Há 2 dias · 钻石克拉重量. 钻石克拉重量是用于衡量钻石重量的单位。. 1 克拉等于 200 毫克。. 在对钻石重量进行测量时，1 克拉又等同于 100“分”，从而使克拉重量精确到小数点后两位。. 珠宝商可以直接用”分” 来描述一颗重量小于 1 克拉的钻石。. 比如，0.25 克拉的 ...
Há 5 dias · Discover the World of Gemstones with GIA Expertise. Welcome to our exclusive gemstone education series, presented in partnership with the Gemological Institute of America (GIA). As a bespoke jeweller certified by GIA, I am thrilled to share with you these insightful videos that illuminate the fascinating world of gemstones.
Há 4 dias · Each piece is stamped to mark its metal content, and you can also use the abbreviation to tell if the piece is plated or solid. These are a few of the most common abbreviations you’ll see: 10K - 10 karat gold. 14K - 14 karat gold. 24K - 24 karat gold. ABF - Antique brass finish or antique bronze finish.
Há 3 dias · THE GEMOLOGY PROJECT is a free Gemological Encyclopedia that anyone can edit! JOIN NOW! FREE ONLINE GEMOLOGICAL INFO: Houston's Gemological Resources Appraisal and Gemological Lab . BARBRA VOLTAIRE'S #1 CHOICES for GEMOLOGICAL INSTRUMENTS . GEMOLOGY ONLINE'S BOOK SHOP Anything purchased in the bookshop earns a small commission for GO.
