Expert and Accurate Precious Metal Refining
Prompt, precise assaying of gold, platinum, palladium and silver
With state-of-the-art equipment and industry-standard processes, we offer accurate precious metal refining to jewelry professionals nationwide. Our prompt, competitive returns rival any in the industry. We stand behind our work. Let us support yours.
The Maguire Refining process
Using industry-standard metallurgic techniques, we refine jewelry solids, grindings, sweeps, filters and carpet to recover gold, platinum, palladium and silver. We process two samples from each lot in parallel to ensure accuracy and a maximum settlement for you.
Step 1: Intake
We receive, weigh and record your lot, noting special instructions.
Step 2: Melting
High-grade solids are melted and poured into bars. Low-grade materials are processed separately.
Step 3: Sampling
Lots are vacuum snap-tube sampled when molten, or bars are drilled when cooled to sample.
Step 4: Assay
Samples are analyzed by instrumentation using XRF. Using the classical fire assay, samples are wrapped in lead, placed in bone-ash cupels and heated to about 2,000℉. The resulting doré beads are run through acid and annealed to yield .9999 fine gold. Further processing yields the additional precious metals.
Step 5: Settlement
Receive your choice of settlement with your prompt, precise, competitive return.
Your settlement, your way:
- Credit against purchases
- Wire transfers
- Exchange for bullion or coins
To estimate the value of your jewelry lot, use our price calculator.
Buying Scrap? Use our Gold Keystone Brochure [Downloads as PDF]. Print out this handy reference sheet to help you quickly determine keystone pricing when buying scrap from the public.
Shipping your scrap
If you would like to ship your scrap to us, use our convenient shipping form.