---
product_id: 725941561
title: "Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)"
brand: "hmkis"
price: "KSh6382"
currency: KES
in_stock: true
reviews_count: 11
category: "Hmkis"
url: https://www.desertcart.co.ke/products/725941561-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x-jewelry
store_origin: KE
region: Kenya
---

# Accurate diamond detection with size adjustment Dual power: Type-C & 9V for stable precision 60X LED jeweler’s loupe for crystal-clear inspection Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)

**Brand:** hmkis
**Price:** KSh6382
**Availability:** ✅ In Stock

## Summary

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

## 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?** KSh6382 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/725941561-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

- • **Versatile 60X Loupe:** Illuminate and magnify gems, coins, antiques, and more with the included LED jeweler’s loupe.
- • **Smart Size Selection:** Customize diamond size settings to avoid false readings and ensure pinpoint accuracy.
- • **Precision Power Upgrade:** Type-C & 9V power options deliver unmatched testing accuracy and reliability.
- • **Error-Proof Contact Alerts:** Flashing light or auto-off signals prevent misreads from metal or skin contact.
- • **Effortless Diamond Verification:** Instant red light & beep feedback confirm genuine diamonds in seconds—no expertise needed.

## Overview

The HMKIS Diamond Tester Pen is a professional-grade, non-rechargeable tool designed for both novices and experts to quickly and accurately identify genuine diamonds. Featuring dual power supply options (Type-C and 9V), a 60X LED jeweler’s loupe for detailed inspection, and smart size adjustment for precise testing, it ensures reliable results with intuitive error alerts. Perfect for jewelry enthusiasts and professionals seeking confidence and clarity in every test.

## Description

desertcart.com: HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) : Arts, Crafts & Sewing

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: Well worth the price, works as it should. - This diamond tester seems to differiate real diamonds from fake, no problem. For such a low price I was of course skeptical, but after usiong it on several different specimens I find it to be accurate. The instructions have a few typos etc. but still very understandable. Also it comes with a jewelers loupe, which again I was skeptical of, but turns out works great also. it has a led light and excellent magnification. Would reccomend if your just a hobbyist. In adddition, this model comes with a 9v battery which powers its operation. It also comes with a usbc cord in case you dont want to use athe battery, I like the portablility of the 9v personally.

## 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
- [Easy Use] 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.
- [Adjust Size]:We have to choose the diamond size before using the diamond tester.Otherwise we may get the incorrect 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F3JQB4FN |
| Best Sellers Rank | #828 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #1 in Jewelry Diamond Testers |
| Brand | HMKIS |
| Color | White Grey |
| Date First Available | January 1, 2021 |
| Item Weight | 4.2 ounces |
| Item dimensions L x W x H | 7.87 x 1.57 x 1.57 inches |
| Item model number | HXK+FDJ |
| Lower Temperature Rating | 5 Degrees Celsius |
| Manufacturer | HMKIS |
| Maximum Operating Voltage | 9 Volts |
| Measurement Type | Presence/Absence |
| Min. Operating Voltage | 5 Volts |
| Power Source | Usb Power |
| Product Dimensions | 7.87 x 1.57 x 1.57 inches |
| Style | art |
| Upper Temperature Rating | 50 Degrees Celsius |

## Product Details

- **Brand:** HMKIS
- **Color:** White Grey
- **Item Weight:** 120 Grams
- **Power Source:** Usb Power
- **Style:** art

## 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/61HfWjzKf1L.jpg)

## 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.

### ⭐⭐⭐⭐⭐ Well worth the price, works as it should.
*by K***G on October 8, 2025*

This diamond tester seems to differiate real diamonds from fake, no problem. For such a low price I was of course skeptical, but after usiong it on several different specimens I find it to be accurate. The instructions have a few typos etc. but still very understandable. Also it comes with a jewelers loupe, which again I was skeptical of, but turns out works great also. it has a led light and excellent magnification. Would reccomend if your just a hobbyist. In adddition, this model comes with a 9v battery which powers its operation. It also comes with a usbc cord in case you dont want to use athe battery, I like the portablility of the 9v personally.

### ⭐⭐⭐⭐ 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! ;)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-01-29*