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Diamond Tester Pen

Our diamond selector II is a portable electronic pen tester for determining real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing.


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Diamond Tester Pen:

Our diamond tester pen is a portable, lightweight device that you can put in your pocket and take anywhere. The tester has a small, needle-like tip that needs to be placed on the stone being tested. If the diamond is real, the device indicates green on the LED display and will make a sound. Diamond testing has never been easier.

  • Professional Diamond Selector will indicate genuine diamond or fake
  • Uses large / small switches for testing diamonds, Emits audible sounds to easily differentiate the readings
  • LED indicator: Diamond indicator will be showed if the stone is a REAL diamond
  • The tester offers a highly compact design that is ideal for buying jewelry, buying / exchanging diamonds, selling real estate, auctions, etc.

Additional information

Age Group

Adults, Kids, Teen















The TheJStoreOnline was founded due to our love for jewelry, watches and bold statement pieces. In early 2019, we started with a simple online marketplace store but, quickly seen how crowded these platforms had become for everyday shoppers looking for amazing new and preowned jewelry at affordable prices. We decided to design our own online jewelry store combining affordable prices with amazing jewelry pieces. We think by offering both new and preowned gold jewelry at extraordinary prices it creates a win/win for us and our customers.


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Jewelry Care

TheJStoreOnline takes pride in providing fellow jewelry aficionados with the best jewelry care goods on the market. Using state-of-the-art products from trustworthy brands is the best way to keep your pieces looking like new by means of non-toxic components that are gentle on your skin Click the ring to learn more about jewelry care!

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