--- product_id: 259672598 title: "HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable)" brand: "hmkis" price: "VT7596" currency: VUV in_stock: true reviews_count: 13 category: "Hmkis" url: https://www.desertcart.vu/products/259672598-hmkis-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x store_origin: VU region: Vanuatu --- # Thermal conductivity scale 1-9 for precise testing Dual power: Type-C & 9V for stable voltage 60X LED loupe for crystal-clear magnification HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) **Brand:** hmkis **Price:** VT7596 **Availability:** ✅ In Stock ## Summary > 💎 Test Like a Pro, Shine Like a Boss! ## Quick Answers - **What is this?** HMKIS 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?** VT7596 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/259672598-hmkis-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x) ## 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 - • **Complete Testing Kit:** All-in-one set with tester pen, loupe, USB cable, and platform—ready to elevate your jewelry game instantly. - • **User-Friendly Design:** Simple size selection and touch panel operation eliminate guesswork—get reliable results every time. - • **Precision Power Upgrade:** Type-C power option ensures ultra-stable voltage for unmatched diamond testing accuracy. - • **Pro-Level Magnification:** Included 60X LED jeweler’s loupe reveals every gem detail, perfect for appraisal or hobbyist use. - • **Instant Authenticity Check:** Rapid LCD & LED indicators with audible alerts let you verify diamonds in seconds—no expertise needed. ## Overview The HMKIS Diamond Tester Pen is a professional-grade, non-rechargeable diamond selector featuring dual power options (Type-C & 9V) for stable voltage output and precise thermal conductivity testing. It includes a 60X LED jeweler’s loupe for detailed gem inspection and offers quick, user-friendly diamond authenticity verification with clear LCD, LED, and audible signals. Ideal for novices and experts alike, this compact kit ensures confident, on-the-spot diamond evaluation. ## Description Product description How to Use Diamond Tester Pen how to use diamond tester Remove protective cap and connect the USB Power Cable, then POWER light on. Choose the correct diamond size by adjust the wheel, test when the READY light on After testing, you need to leave the diamond on the table to cool for a few minutes before the next test. How to test metals One-handed operation ( Wrong ) One-handed operation of equipment cannot determine whether an object is metal by its electrical conductivity As long as it absorbs heat fast enough, it will be misjudged as a diamond Two-handed operation ( Correct ) Operate with both hands, and the device removes metal through conductivity. The light strip flashes double. The left hand needs to touch the object and the right hand needs to touch the metal plate on the back of the device Analysis of test results for different products Testing S size Diamond Comfirm: the size of the diamond is " S" Adjust the wheel to the CORRECT SIZE Level Meter ≥9 lights and emits sound Testing L size Diamond Comfirm: the size of the diamond is " L" Precautions Working environment requirements The working environment temperature is preferably between 5-35℃ Need to be in a windless environment Do not get close to hot or cold objects Pre-test preparation Both the diamond tester and the diamond need to wait for more than 1 minute. Do not hold the diamond in your hands (your hands are hot) There should be no water, grease, etc. on the diamond surface Functional limitations Unable to tester small diamonds When the diamond size is less than 0.025ct, the diamond tester light bar cannot reach the red area When the diamond size is less than 0.015ct, the diamond tester light bar will not respond Unable to distinguish moissanite & diamond This diamond tester cannot distinguish between moissanite and diamond The device can only judge thermal conductivity through heat transfer, and the thermal conductivity of the two is close. 60X Jewelry Loupe Magnifier Material: ABS pocket microscope. Size: 3.5 x 4 x 2 cm coin magnifier. Illuminated by LED. Bright LED light of the Magnifying Glass provides enough light at any dim conditions currency detecting microscope. Compact design provides 60X magnification magnifier for currency. Troubleshooting Methods After turning on the machine, the light strip is full of lights, or there are too many lights, or the number of lights changes back and forth It might be that the battery power supply voltage is low or fluctuates. Please switch to USB power supply and try again. It might be due to the low ambient temperature that the temperature at the head of the equipment has not been heated to the theoretical required temperature. Please let it stand for a while. It will gradually return to normal. 2. Test the metal full lamp and determine if it is diamond This device can distinguish metals from diamonds by the conductivity of the objects. However, users need to operate with both hands to determine whether an object conducts electricity, whether it is metal or diamond 3. The device did not respond when testing the diamond Perhaps the diamond size is too small. When the diamond size is less than 0.015ct, the diamond tester light bar will not respond ## 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 | #1,126 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #1 in Jewelry Diamond Testers | | Brand | HMKIS | | Brand Name | HMKIS | | Color | Black | | Customer Reviews | 4.1 out of 5 stars 8,230 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 | | Part Number | HMKIS | | 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. | | Unit Count | 1.0 Count | | Upper Temperature Rating | 30 Degrees Celsius | ## Product Details - **Brand:** HMKIS - **Color:** Black - **Item Weight:** 120 Grams - **Power Source:** Battery Powered ## Images ![HMKIS 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) ![HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) - Image 2](https://m.media-amazon.com/images/I/516D0Vpp9TL.jpg) ![HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) - Image 3](https://m.media-amazon.com/images/I/91bTPy5SO6L.jpg) ![HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) - Image 4](https://m.media-amazon.com/images/I/51OSomKX3WL.jpg) ![HMKIS Diamond Tester Pen, Professional Jewelry Diamond Tester with 60X Jewelry Loupe Magnifier, Diamond Selector for Novice and Expert (Non-Rechargeable) - Image 5](https://m.media-amazon.com/images/I/615gbyhCYrL.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 ### ⭐⭐⭐⭐⭐ Review *by J***N on January 15, 2026* ### ⭐⭐⭐⭐⭐ Review *by S***E on December 23, 2024* ### ⭐⭐⭐⭐ Review *by L***T on July 13, 2025* ## 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.vu/products/259672598-hmkis-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x](https://www.desertcart.vu/products/259672598-hmkis-diamond-tester-pen-professional-jewelry-diamond-tester-with-60x) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*