Trusted Accuracy for Over 40 Years

Made in the USA, JSP gold and silver testing acids deliver professional precision and freshness you can count on — never imported, never expired.

For jewelers, pawn shops, and precious metal buyers across the United States, using a gold testing kit for jewelers in the USA helps confirm metal purity before buying, selling, or refining valuable jewelry.

gold and silver jewelry acid test kit for precious metal purity testing

Jewelry Testing Kits

Why Choose JSP

Each JSP testing solution is precision-formulated and freshly bottled in the USA under strict quality control. Our bottles are three times larger than standard import kits, giving you more use, stronger reactions, and consistent results.

Trusted by professionals since 1983, JSP acids deliver unmatched accuracy and shelf stability — never imported, never expired, always fresh.

Professionals working with valuable metals often depend on a professional gold and silver jewellery testing kit to verify authenticity and avoid costly mistakes when evaluating precious metals.

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nitric acid and hydrochloric acid bottles used for gold refining and precious metal testing

GOLD REFINING & RECOVERY

Looking to refine your Gold?

Experience the pinnacle of gold refining with GTE's advanced chemicals. Our innovative solutions redefine purity, ensuring that your precious metals shine with unmatched brilliance.

Many professional refiners combine specialized chemicals with a ceramic crucible for gold and silver melting to process metals efficiently during high-temperature refining and recovery workflows.

GOLD REFINING KITS

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JEWELRY TEST STONES

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diamond ring close-up jewelry piece used for gold and silver testing verification

PREMIUM TEST KITS

99% ACCURACY

We know how important it is to get the most bang for your buck when selling your precious metals! Our top quality Gold, Silver, Platinum and Diamond tester kits quickly determine the purity and precious metal content, GUARANTEED!

Using a reliable gold purity testing kit for pawn shops and jewellers allows professionals to quickly confirm karat value and ensure fair transactions when dealing with valuable jewellery or scrap gold.

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Satisfied Customers

  • ⭐⭐⭐⭐⭐

    AMAZING!
    Thank you. Very professional packaging and highly recomended if you want a great no hastle experience. A++++!!!

    _Spendthrifty's

  • ⭐⭐⭐⭐⭐

    100% FRESH. Thank you! The acid testing kit was fresh, factory sealed, and arrived quickly packaged in a bubble wrap envelope! I def will buy from again!

    _The_Corner_Gypsy

  • ⭐⭐⭐⭐⭐

    GREAT. Wonderful exactly what I wanted. Perfect and fast delivery. Couldn't be happier with my purchase, I truly appreciate everything!

    _Kim Norris