Government e-Marketplace (GeM) is the National Public Procurement Portal; an end-to-end online Marketplace for Central and State Government Ministries / Departments, Central & …

Training for registration and bidding for buyers and sellers - GeM offers self-help trainings for buyers and sellers to register and procure services from the GeM portal without any external …

GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological …

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!

2021年4月26日 · Even the most general definition of a gem has many exceptions. Learn what qualities have been used to identify gemstones both scientifically and popularly.

GEM meaning: 1. a jewel (= precious stone), especially when cut into a particular regular shape 2. someone or…. Learn more.

2025年1月3日 · What are Gem Species and Gem Varieties? Gem species are mineral species prized for their durability and beauty. Learn how chemical formulas and crystal structures …