---
product_id: 259672598
title: "Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)"
brand: "hmkis"
price: "€ 40.83"
currency: EUR
in_stock: true
reviews_count: 8
category: "Hmkis"
url: https://www.desertcart.hr/products/259672598-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x-jewelry
store_origin: HR
region: Croatia
---

# Thermal conductivity scale 1-9 for precise diamond ID Dual power: Type-C & 9V for stable voltage 60X LED loupe for crystal-clear magnification Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)

**Brand:** hmkis
**Price:** € 40.83
**Availability:** ✅ In Stock

## Summary

> 💎 Test Like a Pro, Shine Like a Star!

## Quick Answers

- **What is this?** Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) by hmkis
- **How much does it cost?** € 40.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/259672598-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x-jewelry)

## Best For

- hmkis enthusiasts

## Why This Product

- Trusted hmkis brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Magnify Every Detail:** Included 60X LED jeweler’s loupe reveals hidden gem details, perfect for pros and hobbyists craving crystal-clear clarity.
- • **Power Up Your Precision:** Type-C & 9V power options deliver unmatched testing accuracy and reliability—never second guess your results again.
- • **User-Friendly Touch Panel:** Smart touch controls prevent false readings, making diamond testing foolproof for novices and experts alike.
- • **All-in-One Jewelry Toolkit:** Comes complete with tester pen, loupe, USB cable, and testing platform—your ultimate gem appraisal companion.
- • **Instant Diamond Verification:** Rapid, audible, and visual signals confirm authenticity in seconds—no expertise needed, just confidence.

## Overview

The HMKIS Diamond Tester Pen is a professional-grade, non-rechargeable diamond selector featuring dual power supply options (Type-C & 9V) for stable voltage and precise results. It includes a 60X LED jeweler’s loupe for detailed inspection and uses a thermal conductivity scale to quickly verify diamond authenticity with audible and visual alerts. Designed for both novices and experts, its intuitive touch panel and comprehensive kit make diamond testing fast, reliable, and accessible.

## Description

Buy HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable): Diamond Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Worth the price - Although the stone tester does not differentiate between actual diamonds and high quality CZ, they both pass as real, I still like it and find it useful for what I need. The kit includes a small magnifier with lights, which takes the place of a jewelers loop I guess. Again it does what I need it to do. I’ve had it for a week so far and have found many silver pieces of jewelry and a few 14 k. As for the stones in my jewelry only one doesn’t rate on the tester. I haven’t had the chance to try it on any greens yet.
Review: Works great - Works great. Tested on multiple rings and seems to work. Battery life is okay but it says to use plugged in. Good value for the money

## Features

- [Power Upgrade] The HMKIS diamond tester offers two power supply options: Type-C and 9V Power (includes a 1m Type-C cable). Utilizing a Type-C power supply delivers a more stable and precise voltage output, thereby enhancing the accuracy and reliability of experimental and test results. Opting for the Type-C power supply is highly recommended for optimal performance. PLZ NOTE THIS IS Non-Rechargeable !
- [Rapid Assurance] The Professional Diamond Selector II swiftly verifies the authenticity of diamonds with precise accuracy. Designed for quick and secure testing, this diamond selector features an LCD display, LED indicator, and large/small switches for testing diamonds. Audible signals provide further assistance in interpreting readings, ensuring a swift and confident evaluation process.
- [Easy Use]The HMKIS Diamond Tester Pen is a user-friendly tool that eliminates the need for professional knowledge in diamond testing. With just a few simple steps, anyone can determine the authenticity of a diamond. By turning on the Diamond Tester Pen detector, selecting the diamond size, and placing the tip of the tester on the gemstone, users can easily identify whether the stone is a genuine diamond or if it is made of glass, crystal, or cubic zirconia based on the results. The red light and beep emitted by the diamond tester indicate the presence of a diamond, making it a convenient and easy-to-use tool for anyone in need of quick and accurate diamond testing.
- [Jewelers Loupe] The 60X LED Jewelers Loupe with batteries is a versatile tool that can be used for a wide range of applications. Whether you are examining gems, coins, antiques, stamps, conducting readings, inspections, jewelry appraisals, studying rocks, watches, calligraphy, paintings, pursuing hobbies, collecting antiques, building models, working in the photo industry, testing electronic products, or simply using it for tasks in your home life or office, this Jewelers Loupe is an essential tool. Its compact design and powerful LED lights make it convenient for use in various settings, providing clear and detailed magnification for all your viewing needs.
- [Adjust Size]:We have to choose the diamond size before using the diamond tester.Otherwise we may get the incorrect result.
- [Touch Panel]: We have to touch the panel on the back when testing. Othersize we will get a wrong result.
- [Incorrect Contact]: When we have incorrect contact, this diamond tester pen will have a flashing OR it will turn off. When you testing metal,skin,or something else.
- [Warm Notice]:Make sure to test according to the correct testing procedure, avoid using the diamond tester on unsuitable items(metal,skin,water and ect.), to ensure accurate testing results. Any improper operation may affect the accuracy of the test.
- [Package include]:1 x Diamond Tester Pen, 1X 60XJewelers Loupe,1x 1M USB Cabel,1 x Testing Platform,1 x User Manual

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08MTG5NHJ |
| Best Sellers Rank | #2,252 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #2 in Jewelry Diamond Testers |
| Brand | HMKIS |
| Brand Name | HMKIS |
| Color | Black |
| Customer Reviews | 4.1 out of 5 stars 7,992 Reviews |
| Global Trade Identification Number | 09070190994879 |
| Included Components | 60X Microscope |
| Item Dimensions | 10.16 x 2.17 x 1.38 inches |
| Item Weight | 120 Grams |
| Item dimensions L x W x H | 10.16 x 2.17 x 1.38 inches |
| Lower Temperature Rating | 5 Degrees Celsius |
| Manufacturer | HMKIS |
| Maximum Operating Voltage | 9 Volts |
| Measurement Type | Thermal Conductivity Scale (1-9) |
| Minimum Operating Voltage | 5 Volts |
| Model | HXK+FDJ |
| Power Source | Battery Powered |
| Specification Met | CE, RoHS |
| Style | 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. Style 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. See more |
| 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. |
| Upper Temperature Rating | 30 Degrees Celsius |

## Product Details

- **Brand:** HMKIS
- **Power Source:** Battery Powered
- **Style:** 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.
- **Color:** Black
- **Item Weight:** 120 Grams

## Images

![Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) - Image 1](https://m.media-amazon.com/images/I/61vMlTWwMBL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Can it distinguish between real and fake diamonds?**
A: YES! This diamond tester pen can distinguish between real and fake diamonds such as CZ, crystal and topaz, artificial sapphire, zircon. CAN'T DISTINGUISH diamond and moissanite！

**Q: Is it suitable for testing loose diamonds?**
A: Yes, we can use this diamond tester pen to test loose diamond since there will be a platform for testing loose diamond

**Q: Can This diamond tester pen be used to test Diamond jewelry？**
A: Sure! You can use this diamond tester pen to test Diamond jewelry, such as diamond ring, diamond earrings, diamond necklace and so  on.

**Q: What is the power supply method of this diamond tester pen?**
A: This diamond tester pen has two power supply method, one is the 9V battery and the other is USB Type-C power supply!But It is NOT rechargeable!

**Q: Can I use this test something else,such as skin, glass, metal?**
A: We don't suggest use this diamond tester to test something else, as it is a diamond tester pen. When we testing metal, the Level Meter will turn off suddently or it will flashing

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth the price
*by J***N on January 15, 2026*

Although the stone tester does not differentiate between actual diamonds and high quality CZ, they both pass as real, I still like it and find it useful for what I need. The kit includes a small magnifier with lights, which takes the place of a jewelers loop I guess. Again it does what I need it to do. I’ve had it for a week so far and have found many silver pieces of jewelry and a few 14 k. As for the stones in my jewelry only one doesn’t rate on the tester. I haven’t had the chance to try it on any greens yet.

### ⭐⭐⭐⭐⭐ Works great
*by C***B on January 25, 2026*

Works great. Tested on multiple rings and seems to work. Battery life is okay but it says to use plugged in. Good value for the money

### ⭐⭐⭐⭐ Meh
*by L***T on July 13, 2025*

Came to write a review right from the order page, but it's a different combo of products from what I ordered, so bear with me here. Odd. I read all directions both online and that came with tester. I watched all the videos. What I missed until I came back to the product page is that the tip DOES NOT depress, so don't try to press too hard! Another thing was that the scale light will traverse green, yellow, red and back until it is warmed up (see video). And lastly, the tester remains on whether you turn it off or not for as long as it is plugged into the USB. It did NOT come with a 9V battery as described in the product description, so I can't say if it does that with a battery in it. It worked as described, though inconsistently. I figured out that the copper tester tip had a burr on it that wasn't allowing it to make complete flat contact. I used one of my jeweler's files to very gently take that burr off and it works well now. Won't give me a RI number as I had hoped, but it does test diamonds. The little dish they give to hold stones while you test them is about useless...the stones slide around as you try to test - I suggest investing in a good pair of locking tweezers. I'm digging the 60x lighted loupe, though it's kind of silly for gemstones because you need light to pass through the stones, not onto the stone, to see flaws and inclusions, but the UV appears to be 365 which is great as long as it's not reflecting back into your eyes. Im going to figure out a way to mount the loupe over a light. 60x shows much more than my 10x. Carry cases are cheap but functional. I didn't try the USB C cord because I keep one plugged in at my desk already. Final word: It works, but I will be investing in the fancy Presidium. UPDATE: After testing several known diamonds over the course of several days, this unit quit working (no, it didn't get too cold, no breeze, I allowed it to reheat after each stone, I followed the directions). I didn't pay much, so it's not worth the hassle of trying to return it. Besides, I do still like the lighted loupe! ;)

## Frequently Bought Together

- HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)
- Weigh Gram 200g Digital Pocket Gram Scale 0.01g Accuracy, 200g x 0.01g Mini Digital Grams Scale, Small Food Scale, Jewelry Scale, Ounces Grains Scale With100g Calibration Weight

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/259672598-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x-jewelry](https://www.desertcart.hr/products/259672598-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x-jewelry)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-03*