TrueAssay
Professional Gold, Silver & Platinum Testing Kit – 10K/14K/18K/22K Acid Test Set
Professional Gold, Silver & Platinum Testing Kit – 10K/14K/18K/22K Acid Test Set
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The Complete Precious Metal Testing Kit
Professional-grade acid testing kit trusted by jewelers, pawn shops, coin dealers, and precious metal buyers. Authenticate 10K–22K gold, sterling and fine silver, and platinum in seconds — with no damage to jewelry, coins, or bars.
What's Included
- TrueAssay 10K Gold Testing Solution
- TrueAssay 14K Gold Testing Solution
- TrueAssay 18K Gold Testing Solution
- TrueAssay 22K Gold Testing Solution
- TrueAssay Silver Testing Solution (.925/.999)
- TrueAssay Platinum Testing Solution
- 2x4 Black Testing Stone
- Detailed illustrated instruction booklet
Bottle Sizes & Approx. Drop Counts
- Small — 30–40 drops
- Medium — 300–400 drops
- Large — 400–550 drops
How to Test Gold
- Rub your item on the testing stone to leave a visible gold streak.
- Apply a single drop of the karat solution directly onto the streak.
- If the streak remains, your item is that karat or higher. If it fades, it's lower.
- Work up through 10K → 14K → 18K → 22K to pinpoint the karat.
How to Read Silver Results
- Bright red = .999 fine silver
- Dark red = .925 sterling silver
- Brown = .800 silver
- Green = .500 silver
How to Read Platinum Results
- Streak unaffected = platinum
- Streak turns red = most likely palladium
- Streak dissolves / changes color = not platinum
Who This Is For
- Jewelers and jewelry repair shops
- Pawn shops and precious metal buyers
- Coin and bullion dealers
- Resellers sourcing from estate sales, thrift, and auctions
- Serious collectors and private buyers
Why TrueAssay
- Freshly mixed in the USA — potent, reliable reactions
- Everything in one kit — solutions, stone, and instructions
- Color-coded caps — grab the right solution every time
- Trusted by thousands of Amazon and Shopify buyers
Frequently Asked Questions
Will this damage my jewelry?
No. Testing happens on the stone, not on your item.
Does it work on plated items?
Surface tests can read plating as solid metal. For suspected plated items, file a small notch to expose the base metal and test that streak.
How should I store it?
Keep bottles tightly capped, upright, in a cool, dark place away from children and pets.
Safety First
These solutions contain strong acids. Wear gloves and eye protection, work in a ventilated area, and keep away from children and pets. In case of skin contact, rinse immediately with plenty of water. See the included SDS for full handling details.
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.