Scales & Testing

Gold Test Needles – Set of Five (10K, 12K, 14K, 18K & 22K)This professional set of gold test needles includes five needles, each tipped with a ...

Gold test needles are an essential tool for jewelers performing acid-based metal testing. This set of four needles covers three gold karats — 10K, ...

Gold test needles are an essential tool for jewelers and precious metal buyers who need to assess the karat or fineness of gold and silver items us...

The TB-289GEL Gel Tubes are the standard replacement gel tubes designed for use with Tri-Electronics gold testing instruments. Proper gel viscosity...

Replacement TB-24GEL pink gel tubes designed for use with the Tri-Electronics GT-4000 and GXL-24 gold testing instruments. These gel tubes are a co...

Premium Gold Test Stone – Made in the USA – 2-1/2" × 1-1/2" × 1/4"This top-quality gold testing stone is an essential tool for precious metal ident...

A professional-grade gold testing stone made in the USA from natural Arkansas black novaculite, quarried and cut domestically. Used by jewelers and...

The Large Natural Test Stone is an essential tool for jewelers and metalsmiths who need to verify the karat value of precious metals. This professi...

A professional-grade gold testing stone for precious metal identification, this thick touchstone is made in the USA from natural Arkansas black nov...

The Large Gold Test Stone from Eurotool is a natural stone cut to a generous 6" x 4" size, ideal for professional gold testing in a jeweler's bench...

Keep your Tri-Electronics gold testing equipment performing accurately with this direct replacement sensor, designed specifically for the G-1, GT-3...

The Presidium Stone Rest is a testing accessory designed to hold loose stones securely while you work with Presidium gemstone testers. By keeping s...

Keep your Tri-Electronics gold tester performing at its best with this replacement rotating sensor top. Designed as a direct replacement rotary cap...

Keep your Tri-Electronics GT and GXL gold testers performing at their best with this replacement testing plate. Designed as a direct replacement fo...

The Replacement Probe Pen PS2-2 is a genuine titanium probe pen designed as a direct replacement for the Presidium Gem Tester II (PGT II) and Presi...

Keep your Tri-Electronics GT and GXL gold testers performing at their best with a genuine replacement wire set. The test wire assembly is the most ...

Keep your Ohaus YJ152 carat scale powered and ready for precise gem weighing with this dedicated AC adapter. Designed specifically for the Ohaus YJ...

Keep your GemOro AuRACLE Gold Tester running without interruption during busy testing sessions. This optional AC adaptor is designed specifically f...

Presidium AC Adaptors provide reliable mains power for a range of Presidium gem-testing instruments, replacing or supplementing battery operation. ...

Keep your A&D scale powered continuously with the optional A&D AC Adaptor rated at 120V/60Hz. Designed for use with compatible A&D scal...

Platinum Testing Acid Solution is a specially formulated chemical solution designed to test for the presence of platinum in metal samples. Each sma...

Simplicity GC Salts is a professional-grade salt compound designed for use in gold and silver testing and electroplating processes. Available in a ...

The Aqua Regia Gold & Platinum Refining System is widely used to refine precious metals recovered from e-scrap such as circuit boards and chips...

The Aqua Regia Basket Pouch is a key accessory for the Aqua Regia Gold & Platinum Refining System, designed to improve efficiency when processi...

Round acid bottles are an essential tool for jewelers and metalsmiths who perform metal testing and acid-based quality verification in the workshop...

This small plastic bottle contains approximately one ounce of gold testing acid specially formulated for testing 10K gold. Designed for professiona...