Sell Your Gold & Silver at Competitive Prices | The Diamond Authority

The Diamond Authority

Sell Gold and Silver to The Diamond Authority

Turn your unwanted gold, silver, and estate jewelry into instant cash with a name you can trust. The Diamond Authority makes it fast, simple, and secure to sell your valuables — with no pressure, fair pricing, and immediate payouts.

What We Buy

Gold and silver jewelry (even broken or mismatched pieces)
Gold bullion, investment-grade bars, ingots and some coins
Estate jewelry and heirlooms
Dental gold, scrap metal, and vintage items

Whether it’s a single piece or an entire collection, bring it in for a free, no-obligation appraisal.

Why Sell to The Diamond Authority?

Top Market Prices – We pay competitive rates based on real-time gold and silver market values.
Fast & Easy Process – Walk in with your items, walk out with your payment. Most visits take under 15 minutes.
No-Pressure Appraisals – No-Pressure Evaluations-Ge a professional evaluation from jewelers with over 100 years combined experience with no obligation to sell.
Local Experts – Our gemologists and buyers treat you and your items with care and respect in a safe and discreet environment.
Immediate Payment – Accept our offer and get paid on the spot. No shipping, no delays.

What to Expect During Your Visit

Bring Your Items – Visits are by appointment only.
On-the-Spot Appraisal – We examine your gold or silver right in front of you using industry tools.
Fair Offer – Our offers are based on purity (karat), weight, condition, and current spot prices.
Instant Payment – Accept the offer and receive your payment immediately.

It’s that simple.

Client Testimonials

We're proud to have over 100 5-star reviews from satisfied customers across Portland and beyond.

"Super friendly staff and fair prices. I got more than I expected for my gold!"

Rachel M.

"Fast, honest, and very professional. Highly recommend!"

David L.

"The only place I trust to sell my gold and silver. Transparent and respectful every time."

Jessica T.

Frequently Asked Questions

How do I know if my gold is real?

Our team tests every item using professional tools to determine purity and authenticity.

Do you buy silver too?

Yes! We buy all forms of silver, including coins, flatware, jewelry, and bullion.

Is there a fee for evaluations?

No — all evaluations are completely free, and there is never any obligation to sell.

How is the offer calculated?

We assess based on current market value, purity, weight, and any additional collectible or design value.

Do I need an appointment?

Book online, call or text.

Will you buy broken jewelry or single earrings?

Yes! We value the precious metal content, regardless of condition or completeness.

Do you offer price matching?

We strive to provide the most competitive offers. If you’ve received a higher quote elsewhere, let us know — we’re happy to review it.

Ready to Sell Your Gold?

Visit The Diamond Authority today and discover why we’re Portland’s trusted choice for selling gold, silver, and estate jewelry. We’re here to help you unlock the true value of your precious metals — quickly, fairly, and locally.