IGI is the global authority in diamond, gemstone, and jewelry certification. Expert grading, education, and trusted evaluations.

igi 是钻石、宝石和珠宝认证领域的全球权威机构。提供专家分级、教育和值得信赖的评估。

IGI Natural Diamond Reports give an accurate assessment of a diamond’s cut, color, clarity and carat weight according to strict international standards.

igi 采用最先进的技术筛选每一颗宝石，以确定天然开采、实验室培育或模拟产地。 经验丰富的毕业宝石鉴定师在受控条件下进行进一步评估，根据最严格的国际体系详细说明相关的宝石学特征。

The IGI Lab Grown Diamond Jewelry Report describes the article, identifying all mounted gemstones as well as precious metal content and purity stamps, if present. For center stones; shape, cutting style, measurements and 4Cs assessments are provided as mounting permits.

IGI Jewelry Reports are issued for pieces featuring natural and lab grown diamonds and gemstones. Each report provides all gemstone and mounting specifics, and clear standardized photos showing craftsmanship details that may not otherwise be visible.

2025年1月22日 · The IGI Expressions™ competition invites you to showcase your design skills by uploading your unique jewelry concept to our contest portal here. How to Enter: Draw inspiration from this year’s theme, “ A Journey To The Enchanted Forest .”

igi的故事; igi 时间轴; 您附近的 igi 活动; 新闻室; 所属机构; 报告. 评级权威; 评级过程; 钻石报告. 天然钻石报告; 实验室培育钻石报告; 灯光性能报告; 鉴定报告; 彩色钻石报告; 实验室培育钻石珠宝报告; 八心八箭报告; 有色宝石报告; 珠宝报告; 服务. 服务; 钻石 ...

IGI's diamond services include diamond screening, sorting, and more, providing transparency, protection & added value for buyers & sellers.

igi的故事; igi 时间轴; 您附近的 igi 活动; 新闻室; 所属机构; 报告. 评级权威; 评级过程; 钻石报告. 天然钻石报告; 实验室培育钻石报告; 灯光性能报告; 鉴定报告; 彩色钻石报告; 实验室培育钻石珠宝报告; 八心八箭报告; 有色宝石报告; 珠宝报告; 服务. 服务; 钻石 ...