LED indication
A row of indicator lights gives you visible feedback during the checking process.
Portable Diamond Tester Pen with LED & Audible Feedback
$31.99
$57.99
Shipping and applicable taxes are shown at checkout.
30-day returns for unused items
Secure checkout powered by Shopify
Why it works
Visible and audible cues for a careful diamond check.
A handheld tester with LED indicators, audible feedback, a metal-contact alert and a defined vertical-probe procedure for checking diamonds.
Key benefits
Why you will keep it within reach
Audible response
Sound feedback accompanies the visual indication so you are not relying on the LEDs alone.
Metal-contact alert
A continuous alert helps identify accidental contact with metal rather than the intended stone surface.
Guided probe position
Use the probe vertically with gentle contact against the stone.
Details that matter
Clear feedback for careful diamond checks
Probe the stone vertically
The checking sequence calls for the probe to be brought straight to the stone surface rather than held at an angle.
Follow LED and audible feedback
Visible indicator lights and an audible response work together during the diamond check.
Use the rear conductive plate
Touch the rear conductive plate as directed while performing the probe-based checking sequence.
Prepare the tester before contact
Install one 9V battery, switch the tester on and wait for the ready indication before moving to the stone.
How it works
Simple by design
Power and warm up
Install one 9V battery, switch the tester on and wait until the ready indication is shown.
Position the stone
Use the support tray for a loose stone or hold a mounted stone so the probe can reach its surface.
Touch the rear plate
Maintain contact with the rear conductive plate as directed during the checking process.
Make the check
Bring the probe vertically into gentle contact with the stone and follow the LED and audible response.
The specifics
Product details
- Product type
- Portable diamond tester pen
- Visual feedback
- LED indicators
- Audible feedback
- Audible response
- Metal contact
- Continuous alert
- Power
- One 9V battery
- Battery included
- No
- Control surface
- Rear conductive plate
- Probe position
- Vertical with gentle stone contact
- Color option
- Black
Buying from ByOurielle
Our promise to you
Reviewed before it ships
Every product page is checked against the actual item — what you read is what you get.
30-day returns
Unused items can be returned within 30 days of delivery under our returns policy.
Real support
Questions before or after your order? Contact us and a person will answer.
FAQ
Good to know before you order
What feedback does the tester provide?
It provides LED indication and audible feedback during the diamond-checking process.
Why can the tester sound continuously?
A continuous alert can indicate that the probe is contacting metal rather than the intended stone surface.
How should the probe be positioned?
Bring the probe vertically into gentle contact with the stone while following the setup sequence.
Does it include the 9V battery?
No. The tester uses one 9V battery, and the battery is not included.
Does it identify every type of gemstone?
This tester is described for diamond checks; no interpretation method is specified here for other gemstones.
Keep browsing
More from ByOurielle
(1-15PCS) 12V 16AWG Add-a-circuit TAP Adapter Micro Mini Standard ATM APM Fuse Holder Blade Type For Auto Electrical Maintenance
$7.99
0.3 mm Dual-Action Gravity-Feed Airbrush Set
$55.99
1 Pair Universal Probe Test Leads Pin Digital Needle Tip Multi Meter Tester 20A 1000V
$6.99