December's birthstones offer three ways to fight the winter blues: tanzanite, zircon, and turquoise—all of them are best known for beautiful shades of blue.
The American Gem Society® has four types of firm members, each having its own requirements. Click on the firm types below to learn more:
- Retail Jeweler Firm
- Supplier Firm
- Independent Certified Gemologist Appraiser Firm
- Sustaining Firm (those that support the jewelry industry such as insurance and watch companies)
To learn more about membership, contact 866.805.6500 or email firstname.lastname@example.org