Welcome to Hoover & Strong - your eco-friendly refiner and manufacturer of precious metals for over 90 years. Our HARMONY brand of high quality products paired with ethically-sourced gems and diamonds includes bridal jewelry, findings, mill products, custom casting and refining services.
Learn more about HARMONY and promote your eco-friendly jewelry with FREE onsite promotional materials and educational resources available to all Hoover & Strong customers.
*A state or city jewelry business license is required to do business with Hoover & Strong.
Diamonds
We have an inventory of over 40,000 loose diamonds to choose from. Many shapes and carats available.
Coming Soon! Our HARMONY diamonds - ethically sourced from Canada.
- Search All Diamonds
Mill Products
From grain to solder, we offer mill products for all your jewelry needs.
- Casting Grain
- Sheet
- Wire
- Tubing
- Solder
- Coins & Bullion
Custom Casting
Have our experts cast and finish your ring designs in gold, platinum, palladium or silver.
Use our online calculator to receive a free estimate.
Download the H&S Nondisclosure Agreement.
Refining
Follow these refining processes when sending in your scrap.
- Preparing Your Shipment
- Refining Terms & Settlement
- Increase Your Bottom Line
- Get Higher Returns
- Finding Your Metal Scrap
- Buying Jewelry Scrap
- The Refining Process
HARMONY Metals and Gems™
Hoover & Strong's eco-friendly products are made from recycled metals and ethically sourced diamonds and gems. Learn more about HARMONY and promote your eco-friendly jewelry with our promotional materials and educational resources.
- HARMONY Metals and Gems
The TruSeat® Video
View our online video and learn about Hoover and Strong's patented TruSeat® Settings - scientifically designed to reduce your labor and waste!
- The TruSeat Video
Technical Articles
Want to learn more about Palladium, the new white metal? How about some assembling and soldering tips?
We have hundreds of educational articles available on our website.- Technical Articles










