Learn how the GIA determines the geographic origin of one of the world’s most electric and rare gemstones — the Paraíba tourmaline. Discover why origin matters in both value and authenticity.

Explore the advanced analytical methods used by GIA to determine the geographic origin of gemstones. Understand how science and precision play a crucial role in gem identification and valuation.

Discover how GIA experts determine the geographic origin of emeralds using advanced analytical techniques. Learn why origin matters and how it influences the value and authenticity of each stone.

Explore how GIA analyzes rubies to trace their geographic origin. Understand the scientific process behind origin determination and why it plays a vital role in a ruby’s identity and value.

Learn how GIA experts determine the geographic origin of blue sapphires through advanced testing. See how origin influences rarity, authenticity, and overall value in today’s sapphire market.