TrueAssay
14K Gold Testing Solution + 2x4 Tester Stone
14K Gold Testing Solution + 2x4 Tester Stone
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Everything You Need to Test 14K Gold — In One Kit
The TrueAssay 14K Gold Testing Solution + Stone kit has everything you need to verify gold in seconds. Rub your item on the included testing stone, apply a single drop, and read the reaction to confirm 14K gold. Reusable, reliable, and safe for your jewelry.
What's Included
- TrueAssay 14K Gold Acid Testing Solution
- 2x4 Black Testing Stone with non-slip backing
- Freshly mixed, US-made, tamper-evident bottle
How to Read the Results
Rub your item on the testing stone to leave a gold streak, then apply one drop of solution:
- Streak remains / unaffected = at least 14K gold or higher
- Streak fades slowly = lower karat than 14K
- Streak disappears quickly = not gold or heavily plated base metal
About the Testing Stone
Our 2x4 black testing stone shows streaks clearly from gold, silver, and platinum. It's washable and reusable for thousands of tests. The soft non-slip backing keeps it in place and protects your work surface.
Who This Is For
- Jewelers and jewelry repair shops
- Pawn shops and gold buyers
- Coin and bullion dealers
- Resellers sourcing from estate sales, thrift, and auctions
- Private buyers verifying inherited or online-purchased gold
Why TrueAssay
- Freshly mixed in the USA — potent, reliable reactions
- Solution + stone combo — ready to test out of the box
- Easy to read — clear results for 14K gold
- Trusted by thousands of Amazon and Shopify buyers
Frequently Asked Questions
- Will this damage my gold? No. Testing happens on the stone, not on your item.
- Does it work on plated gold? Surface tests can read plating as solid gold. For suspected plated items, file a small notch to expose the base metal and test that streak.
- How do I clean the testing stone? Rinse with water and wipe with a cloth between tests. The stone is reusable thousands of times.
- How many tests per bottle? Approximately 400 tests per bottle when using single drops.
Safety and Disclaimer
- Safety: This solution contains strong acids. Wear gloves and eye protection, work in a ventilated area, and keep away from children and pets.
- Disclaimer: Acid testing is a screening method. For high-value items, confirm results with XRF analysis or a certified assay.
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Trusted by Industry Professionals
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Lab-Tested Quality
Each batch is formulated to professional-grade testing standards used by jewelers and refiners.
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Fast U.S. Shipping
Orders ship same-day from Atlanta, GA. Most U.S. customers receive in 2 to 5 business days.
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Helpful Customer Support
Questions about testing technique or kits? Reach our team for guidance before and after your purchase.
Frequently Asked Questions
How do I use the testing solution?
Rub the metal on a testing stone, apply a drop of acid to the streak, then compare the color reaction to the standard chart for that karat.
How fast does my order ship?
Orders placed before 2 PM EST ship the same business day from Atlanta, GA. Most U.S. orders arrive in 2 to 5 business days.
Are these solutions safe to handle?
Our acid solutions are professional-grade and should be handled with gloves and eye protection in a well-ventilated area. SDS sheets are available on request.
What's your return policy?
Unopened items can be returned within 30 days of delivery. Opened acid bottles cannot be returned for safety and shipping reasons.