Why do I get diamonds in almost everything I test?

The device is set to the wrong setting. The S setting is the ultra-sensitive setting and can only be used to test Micro-Diamonds. This setting will cause false readings if it is used to test objects weighing more than 0.2 grams.

Why does my device barely respond when I test diamonds?Why not work?

The L setting is specifically designed for large diamonds. If you use this setting to test small diamonds, the device will barely react.

What should I do if I don't know the exact size of the diamond?

You can start by testing with the M setting. The M setting is for testing diamonds between 0.5 and 1 carat.

Diamond Tester Pen With 60x Jewelry Loupe Non Rechargeable

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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112.67 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

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Description

💎 Test like a pro, inspect like a boss — never miss a real diamond again!

SMART SIZE SELECTION - Adjustable settings (S, M, L) tailor testing sensitivity for micro to large diamonds, eliminating false positives and boosting confidence.
COMPACT USER FRIENDLY - Lightweight, pocket-sized design with intuitive touch panel—perfect for on-the-go professionals and hobbyists alike.
PRECISION POWER UPGRADE - Type-C power supply ensures ultra-stable voltage for rock-solid diamond testing accuracy.
RAPID RELIABLE RESULTS - Instant LCD & LED indicators with audible alerts let you verify diamond authenticity in seconds—no expertise needed.
VERSATILE LOUPE INCLUDED - 60X LED jeweler’s loupe for crystal-clear inspection of gems, antiques, and collectibles anywhere, anytime.

The HMKIS Diamond Tester Pen combines advanced thermal conductivity technology with dual power options (Type-C & 9V battery) to deliver fast, precise diamond authenticity testing. Paired with a powerful 60X LED jeweler’s loupe, it offers millennial professionals a sleek, portable solution for confident gem verification and detailed inspection—no specialized training required. Adjustable size settings and clear visual/audio feedback ensure reliable results across micro to large diamonds, making it an essential tool for jewelry managers, collectors, and enthusiasts aiming to stay ahead in the luxury market.

Specifications

Asin	B08MTG5NHJ
Best Sellers Rank	#2,318 in Arts, Crafts & Sewing (See Top 100 in Arts, Crafts & Sewing) #1 in Jewelry Diamond Testers
Brand Name	HMKIS
Color	Black
Customer Reviews	4.0 4.0 out of 5 stars (8,573) 4.0 out of 5 stars
Global Trade Identification Number	09070190994879
Included Components	60X Microscope
Item Dimensions	10.16 x 2.17 x 1.38 inches
Item Highlight	Based on High Thermal Conductivity of Diamonds. Powered by USB or 9V Battery Diamond Selector for Novice and Expert
Item Weight	120 g
Lower Temperature Rating	5 °C
Manufacturer	HMKIS
Maximum Operating Voltage	9 volts
Measurement Type	Thermal Conductivity Scale (1-9)
Minimum Operating Voltage	5 volts
Model	HXK+FDJ
Number Of Items	5
Number Of Packs	1
Part Number	HMKIS
Power Source	Battery Powered
Specification Met	CE, RoHS
Style Name	Appraising jewelry, gemstones, unique rocks, calligraphy, paintings, antiques, and other collectibles, as well as offering expert evaluations for gems, fine jewelry, diamonds, coins, stamps, and watches.
Unit Count	1 Count
Upper Temperature Rating	30 °C

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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112.67 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.