PeakTech
✓Price
$81.99
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Portable Electronic Diamond Tester Pen with UV Light, High Accuracy Professional Real Diamond Selector Hardness Gem Test Tool for Jewelry Stones, Novice Expert
★★★★★
$81.99
Quantity
1
Worldwide shipping
Fast tracked delivery
30-day returns
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Great service
Thousands of happy customers
About this item
- Complete tool for diamonds: This gemstone testing equipment is not only a diamond tester, but also a gemstone tester. It can detect whether a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite and other gemstones of various sizes.
- Clear Screen & Audio Instruction Design: these high accuracy diamond testers are designed with a clear screen, so you can get the useful data quickly. The jewelry diamond tester is equipped with LED lights and audio instructions. As long as the tip is perpendicular to the test masonry and the switch is pressed, the result can be obtained.
- Before testing: 1. Insert the battery. 2. Remove the probe cover. 3. Turn on 4. Make sure only one light on the scale turns on. 5. Make sure the "lamp ready" light is on. 6. If you test the diamond, turn on the number of lights corresponding to the interior temperature and weight of the diamond. 7. If you test other gems, it is better to calibrate the probe, method: place the probe vertically on the glass, then adjust the light to 5, then test the gems.
- UV Light: The UV light on the diamond tester is used to test the fluorescence color and intensity of diamonds, aiding in the authentication and quality assessment of the diamond. Diamond test pen can be used for gems, coins, antiques, stamps, reading, inspection, etc. Diamond tester pen is designed for fast, precise and safe diamond testing.
- Portable: Diamond Tester Pen is small and can fit into any purse or backpack. They are a must have tool kit when you are going to a garage sale, flea market, swap meet, etc. Alternatively, its also a great tool to have when testing your own jewelry.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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