5pc Complete Gold Testing Kit with Acid Testing Solution & Scratch Stone Set

Take a closer look at your finds with this Gold Testing Kit with Scratch Stone and 10K, 14K, 18K & 22K Acid Testing Solutions. Designed for gold prospectors, panners, miners, collectors, and hobbyists, this complete testing set provides the essential tools needed for traditional acid-based gold testing in one convenient kit.

The included 10K, 14K, 18K, and 22K gold testing solutions allow you to compare suspected gold against multiple karat levels, while the scratch stone provides a durable surface for creating test streaks. Whether you’re examining nuggets or other suspected gold material recovered while panning, sluicing or prospecting, this kit provides a practical way to perform preliminary gold purity testing.

With four testing solutions included, this kit offers greater versatility than a single-karat test and makes it easy to keep multiple testing options together in one compact setup. It’s a useful addition to a gold prospecting kit, home testing station, workshop, claim setup, or field gear collection.

Includes: 1 Scratch Stone, 1 bottle of 10K Gold Testing Solution, 1 bottle of 14K Gold Testing Solution, 1 bottle of 18K Gold Testing Solution, and 1 bottle of 22K Gold Testing Solution.

Always follow the included instructions and recommended safety precautions when handling acid testing solutions. Acid testing provides a preliminary indication of gold purity and should not be considered a substitute for professional precious-metal analysis when exact composition or purity verification is required.

HOW TO TEST GOLD WITH A SCRATCH STONE & ACID TESTING SOLUTION:

Before Testing

Wear protective gloves and eye protection and work in a well-ventilated area. Gold testing solutions contain corrosive acids and should be handled carefully. Keep testing solutions away from children, skin, eyes, clothing, and surrounding surfaces. Always follow the safety information provided on the product label and Safety Data Sheet.

For best results, make sure the gold sample and scratch stone are clean and dry before beginning.

For kits containing a scratch stone plus 10K, 14K, 18K, and 22K testing solutions:

Create a Test Streak: Firmly rub the suspected gold across the scratch stone several times to produce a clear metal streak.
Start with the 10K Solution: Apply a small drop of 10K testing solution to part of the streak.

Check the Result: If the streak dissolves, the sample is likely below 10K or may not be gold. If the streak remains, continue testing with the next solution.

Move Up Through the Karats: Create a fresh streak or use a clean section of the stone and repeat the process with the 14K solution, followed by the 18K and 22K solutions as needed.

Identify the Approximate Range: The highest-karat solution that leaves the streak intact provides an indication of the sample's approximate gold purity.

Example: If the streak remains after applying 14K solution but dissolves when tested with 18K solution, the sample is likely between those two purity levels.

If the streak remains when tested with the 22K solution, the sample may be approximately 22K gold or higher.

IMPORTANT TESTING TIPS:

Begin with the lowest-karat solution and work upward when using a multi-solution kit.
Use a clearly visible metal streak for easier observation.
Use a fresh or thoroughly cleaned section of the stone between different testing solutions.
Never touch the acid bottle or dropper tip directly to the scratch stone or sample.
Recap each testing solution immediately after use.
Do not mix testing solutions together.
Acid testing provides a preliminary indication of gold purity rather than an exact assay.

A NOTE FOR GOLD PROSPECTORS:

Naturally occurring gold can vary considerably in purity and may contain silver, copper, or other minerals. Gold flakes, nuggets, and specimens may also contain attached rock or mineral material that can affect testing. For these reasons, acid testing is best used as a preliminary field or home identification method rather than a precise measurement of gold content. For exact gold purity, composition, or value, additional professional testing may be required.