Hoover & Strong is your eco-friendly refiner and manufacturer of precious metals. Our HARMONY brand of quality products includes bridal jewelry, findings, mill products, custom casting and refining services. Learn more about HARMONY and promote your eco-friendly jewelry. HARMONY Metals™ are now certified by Scientific Certification Systems (SCS). Read the Press Release.
*A state or city jewelry business license is required to do business with Hoover & Strong.
NOTICE TO OUR CUSTOMERS: As a result of the Keystone acquisition, some style names have changed. To help you with your orders, please click here to see our Old and New Style Name Reference List.
Diamonds
Mill Products
From grain to solder, we offer mill products for all your jewelry needs.
- Casting Grain
- Sheet
- Wire
- Tubing
- Solder
- HARMONY 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.
Read the H&S Non-Disclosure Agreement.
Refining
Follow these refining processes when sending in your scrap.
- Preparing Your Shipment
- Hoover Refining Charges
- Increase Your Bottom Line
- Get Higher Returns
- Finding Your Metal Scrap
- Buying Jewelry Scrap
- What You Get For Your Scrap
- Stone Removal and Diamond Melee Sorting
- Analytical Services
- The Refining Process
- Environmental Responsibility
- Refining Brochure
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.
We Make It Happen
See our "We Make It Happen" Custom Services and Minimums for:
Technical Articles
We have hundreds of educational articles available on our web site and we're always adding more, so come back often to search our database.
- Technical Articles
NEW!! - CLICK HERE for "We Make It Happen" Custom Services and Minimums
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*A state or city jewelry business license is required to do business with Hoover & Strong.















