Professional Gold Testing Kit with Touchstone 10K 14K 18K 22K 24K Jewelry Purity Acid Tool

Accurately verify gold purity, authenticate scrap jewelry, and identify counterfeit metals with this Professional Gold Testing Kit and Natural Touchstone. Built for jewelers, pawnbrokers, coin collectors, and hobbyist treasure hunters, this essential assay tool provides clear, immediate results for testing 10K, 14K, 18K, 22K, and 24K gold. The dense, finely grained black testing touchstone allows you to leave a clean streak of metal without scratching or permanently damaging valuable jewelry pieces. Paired with standard nitric acid testing solutions, you can evaluate chemical reactions instantly against the dark surface to confirm karat grades, distinguish solid gold from cheap plating, and buy or appraise precious metals with complete confidence.

Key Features

• Comprehensive Karat Verification: Reliably tests and differentiates gold content ranging from 10K, 14K, 18K, 22K, up to pure 24K items.

• Finely Grained Natural Touchstone: Ultra-smooth, high-contrast dark testing stone catches precise metal streaks without gouging or harming jewelry.

• Rapid Acid Reaction Surface: Acid-resistant stone structure enables crisp, instantaneous color changes and clear visibility of metal dissolution.

• Detects Fake & Plated Metals: Quickly reveals gold-filled, rolled gold, or surface-plated brass, copper, and base metal fakes.

• Non-Destructive Assay Method: Requires only a microscopic streak test, preserving the structural integrity and aesthetic value of vintage pieces.

• Compact & Portable Design: Pocket-sized footprint makes it easy to bring along to estate sales, flea markets, coin shops, and pawn auctions.

Why Choose Our Gold Testing Kit

Guessing karat stamps or relying on visual inspection alone often results in overpaying for plated junk or passing on valuable real jewelry. This professional gold testing tool pairs a high-contrast natural touchstone, broad 10K–24K compatibility, acid-resistant surface durability, and fast visual verification—giving your jewelry appraisals, estate buying, and precious metal investments an instant, foolproof upgrade.

Perfect For

• Evaluating scrap gold jewelry, rings, chains, broken earrings, and estate sale finds

• Authenticating gold bullion bars, sovereign coins, medallions, and antique pocket watches

• Pawn shops, antique dealers, thrift store pickers, and jewelry bench repair stations

• Differentiating genuine solid gold from gold-plated brass or hollow alloys

• Essential diagnostic tool for metal detectorists, treasure hunters, and precious metal collectors

Specifications

• Type: Gold Testing Stone & Purity Assay Kit / Jewelry Appraisal Tool

• Purity Range Compatibility: 10K, 14K, 18K, 22K, and 24K Gold

• Stone Material: Natural High-Density Black Siliceous Touchstone

• Surface Properties: Acid-Resistant, Fine-Grained, High-Contrast Scratch Plate

• Care Instructions: Clean the stone after every test by washing away acid with cold water; wipe with a dry cloth and apply a small drop of mineral oil periodically to maintain a deep black surface

• Applications: Jewelry Verification, Scrap Gold Sorting, Coin Authentication, Estate Liquidations