Complete Gold Testing Kit with Wooden Storage Box – 10K, 14K & 18K Acid Test Solutions

Is It Real Gold? Find Out with a Convenient Gold Testing Kit!

That old ring from an estate sale. A gold-colored necklace discovered while metal detecting. A piece of jewelry marked 14K that you're not quite sure about.

Before you buy, sell, or evaluate a piece of gold jewelry, it helps to have a reliable way to check its approximate purity.

The Complete Gold Testing Kit with Wooden Storage Box provides the essential tools for traditional touchstone acid testing, allowing you to compare gold items against 10K, 14K, and 18K testing solutions.

Everything comes together in a compact wooden storage box with dedicated compartments for the testing bottles and stone.

Whether you're a jewelry collector, precious-metal buyer, pawn shop operator, or treasure hunter, this convenient kit makes gold testing more accessible.

Key Features & Benefits

• Three Gold Testing Solutions: Includes 10K, 14K, and 18K acid testing solutions for estimating gold purity.

• Black Testing Stone: Provides a surface for making test streaks without applying acid directly to most jewelry.

• Organized Wooden Storage Box: Keeps your testing supplies neatly arranged between uses.

• Magnetic Closure: Helps keep the box closed during storage.

• Compact Design: Convenient for a jewelry workbench, appraisal station, or organized equipment cabinet.

• Instructions Included: Guidance for performing traditional gold touchstone testing.

• Great for Beginners and Experienced Buyers: A practical addition to a jewelry testing setup.

Who Can Use This Gold Testing Kit?

Metal Detectorists & Treasure Hunters

Found a gold-colored ring, pendant, or other jewelry item while metal detecting?

A touchstone test can help you investigate whether the item may contain gold and estimate its karat range.

Estate Sale & Antique Jewelry Buyers

Not every piece of jewelry has a readable hallmark, and a stamped karat marking is not proof of authenticity.

Gold testing solutions provide another useful screening method when evaluating jewelry before purchase.

Pawn Shops & Precious-Metal Buyers

Quickly screen jewelry and other suitable gold items at your testing station before deciding whether further verification is needed.

Jewelry Collectors & Hobbyists

Build confidence when evaluating old jewelry, unmarked pieces, and secondhand gold purchases.

Coin Collectors

Gold testing may be useful for certain suitable metal samples, but scratching or acid testing a collectible coin can damage its surface and significantly reduce its numismatic value. Use nondestructive authentication methods for valuable coins.

How Gold Acid Testing Works

Traditional touchstone testing uses a small streak of metal deposited onto a black testing stone.

The streak is exposed to an appropriate testing solution, and the reaction helps indicate whether the material meets a particular karat threshold.

For example, if a streak withstands the 10K testing solution but reacts to the 14K solution, that result may suggest a gold purity between those thresholds.

For more accurate comparisons, experienced users often test a known-karat reference sample alongside the unknown metal.

Important: Acid testing is an approximate screening method. Results may be affected by plating, surface treatments, alloy composition, contamination, and testing technique. It does not measure exact gold purity or establish an item's value.

Beautifully Organized Wooden Storage Box

The included wooden box helps keep your gold testing supplies in one convenient location.

Features include:

• Three dedicated testing-solution bottle compartments

• Separate testing-stone compartment

• Additional compartment for optional testing needles

• Stainless steel hinges

• Magnetic closure

• Compact 5 × 4 × 3⅛-inch exterior dimensions

The box is intended for organized storage. It is not a child-resistant or spillproof chemical safety container.

Product Specifications

What's Included?

• 1 × 10K gold testing solution

• 1 × 14K gold testing solution

• 1 × 18K gold testing solution

• 1 × Black gold testing stone

• 1 × Wooden storage box

• Gold testing instructions

Not included: Gold testing needles, 22K testing solution, silver or platinum testing solutions, and acid neutralizer.

Important Chemical Safety Information

WARNING: Testing solutions contain corrosive chemicals that can cause serious skin and eye burns.

• Wear chemical-resistant gloves and appropriate splash-protective eyewear.

• Work in a well-ventilated area on a chemical-resistant surface.

• Keep solutions away from children, pets, food, and beverages.

• Avoid contact with skin, eyes, clothing, and finished jewelry surfaces.

• Never mix testing solutions or transfer them into unmarked containers.

• Keep bottles upright, securely closed, and stored according to their labels and Safety Data Sheets.

• Follow the manufacturer's instructions and applicable chemical disposal requirements.

If exposure occurs, follow the product's Safety Data Sheet. For skin or eye exposure, immediately rinse with plenty of running water and seek appropriate medical guidance. Do not attempt to neutralize acid on your skin or eyes with baking soda.

Gold testing may scratch or permanently damage the item being tested. Use extra caution with plated jewelry, valuable antiques, collectible coins, and finished surfaces.

Make More Informed Gold-Buying Decisions

Whether you're checking a jewelry find, evaluating an estate-sale purchase, or building your own precious-metal testing station, this kit provides a convenient starting point for traditional gold acid testing.

With three common karat solutions, a testing stone, and a dedicated wooden storage box, your supplies stay organized and ready for the next test.

Know more about what you're buying, selling, or finding.

Order your Complete Gold Testing Kit with Wooden Storage Box from High Plains Prospectors!

Includes the 10k, 14k, and 18k testing acids along with the 2 inch x 1 1/2 inch test stone, wood storage box, and instructions.

Storage Box

Wooden box for holding precious metal testing solutions such as gold, silver, platinum and testing stone. Compartments conveniently hold everything is perspective spot. Stainless steel hinges with magnetic closure. 

• 3 Acid Bottle Compartments 1¼"x1¼"x2-1/8"
• 1 Gold Testing Stone Compartment 2"x1"
• 1 Gold Testing Needle Compartment 2"x1"
• Box Dimension 5"x4"x3-1/8"
• Magnetic Closure

CAUTION

Use extreme care when handling gold and silver testing kit solutions as they are corrosive acids. In case of skin contact, flush with large amounts of water. Then treat affected area with sodium bicarbonate or baking soda. If swallowed, contact a physician or hospital at once. In case of spills. treat with water and then sodium bicarbonate or baking soda.

TESTING FOR GOLD

Scratch the piece to be tested over the surface of the black stone provided, press well so as to leave a visible deposit, preferably a line of one to one-half inches long. For the most accurate testing it is recommended that the user becomes familiar with comparative testing using standard gold testing needles. For highest sensitivity place a scratch line with a gold test needle next to the scratch line of the metal you are testing. Compare the speed at which the scratches dissolve. If the test scratch dissolves more quickly than the needle scratch, it is a lower karat than the needle.

Transfer a drop of the 10K solution to the scratch made. If the solution dissolves the scratch on the stone. it means the object is less than 10K gold or not gold at all. If the, solution leaves the scratch intact, it means the object being tested is 10K or greater than 10K.

The scratching and testing is repeated with the 14K solution. If the Solution dissolves the scratch on the stone, it means the object is less than 14K gold (if the scratch dissolves slowly and leaves rusty color particles, it is probably 12k gold). If the solution leaves the scratch intact, it means the object being tested is 14K or greater than 14K. (CAUTION: Many objects are marked 14K, but were fabricated prior to 1982 when it was legal to mark items 14K, but in reality the gold was 13.5K. When testing 13.5K gold, the 14K solution will not dissolve the scratch, but it will make it lose its brightness and it will turn it into a yellow-rusty color).

The scratching and testing is repeated with the 18K solution and the 22K solution (if available) until the karat of the object is determined. Remember that when the solution being used dissolves the scratch slowly and leaves rusty color particles it is probably two karats lower than the solution being used.

On items of heavy weight and volume such as chains, coins, etc, where plating could hide the true metal, it is recommended that a deep notch in the test piece be made and the testing be made with the metal inside the piece

TESTING FOR SILVER

Scratch the piece to be tested over the surface of the black stone provided, press well so as to leave a LARGE AND THICK visible deposit, preferably a line of one to one-half inches long.

Transfer a drop of the silver solution to the scratch made, The color reaction of the solution with the metal scratch will be as follows: (Take into consideration that the background of the test stone is black).

• .925 silver and above, the acid will turn red.
• 70-89% silver, the acid will turn green/brown.

NOTE: With the silver solution, it is possible to test directly on the piece being tested, however, the solution will dull the polishing of the piece, and leave a mark where the acid was placed.

TESTING FOR PLATINUM AND WHITE GOLD

Scratch the piece to be tested over the surface of the black stone provided, press well so as to leave a LARGE AND THICK visible deposit, preferably a line of one to one-half inches long.

Transfer a drop of the platinum test solution to the scratch made. (Take into consideration that the background of the test stone is black). The material on the stone is platinum, it should keep its white, bright color. Platinum test liquid can also be used for 18k and 14K white gold. In the case of 18K, the material on the stone should start changing to a light bronze color in about 3 minutes. For 14K white gold, the material on the stone should disappear in about 15 seconds.