Rio Grande supports the art and industry of jewelry-making with a one-stop selection, exemplary service, technical expertise, and educational support. We are a leading provider of precious materials, bench supplies, customization, and cutting-edge technologies.
Diamonds & Gemstones Sourcing
Theodore Mander G.G., G.D., A.J.P.
100% Conflict - Free Diamonds
AGTA: From the Authority in Color
It’s a pleasure working with our clients to find the perfect gemstones and diamonds for their projects! I love to see the gems we supplied featured in a wide range of jewelry creations from our talented customers.
Theo Mander
Rio Grande Expert Gemologist