--- product_id: 259672598 title: "HMKIS Diamond Tester Pen with 60X Jewelry Loupe (Non-Rechargeable)" brand: "hmkis" price: "¥5913" currency: JPY in_stock: true reviews_count: 13 category: "Hmkis" url: https://www.desertcart.jp/products/259672598-hmkis-diamond-tester-pen-with-60x-jewelry-loupe-non-rechargeable store_origin: JP region: Japan --- # Thermal conductivity scale 1-9 Dual power: Type-C & 9V battery 60X LED magnification loupe HMKIS Diamond Tester Pen with 60X Jewelry Loupe (Non-Rechargeable) **Brand:** hmkis **Price:** ¥5913 **Availability:** ✅ In Stock ## Summary > 💎 Test like a pro, inspect like a boss — never miss a real diamond again! ## Quick Answers - **What is this?** HMKIS Diamond Tester Pen with 60X Jewelry Loupe (Non-Rechargeable) by hmkis - **How much does it cost?** ¥5913 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/259672598-hmkis-diamond-tester-pen-with-60x-jewelry-loupe-non-rechargeable) ## 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 - • **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. ## Overview 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. ## Description Buy HMKIS Diamond Tester Pen with 60X Jewelry Loupe (Non-Rechargeable) | Based on High Thermal Conductivity of Diamonds. Powered by USB or 9V Battery Diamond Selector for Novice and Expert: Diamond Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Amazing product - This is an absolute gem of a find. Works very well and includes everything necessary for it's use. The microscope includes a UV light where you can check fluoresce and has good magnification for smaller stones. The tester itself can be powered by a battery or USB-C cable, which is more accurate and convenient. The tester can differentiate between glass and high hardness stones like Corundum, but struggles if you are testing similar hardness stones like corundum and moissanite. Overall would recommend a lot. Review: A great instrument - It works very well. Quality made. Price is rt. A great help for my business. ## 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 | #1,612 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 | 4.0 out of 5 stars 8,552 Reviews | | 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 | | Item dimensions L x W x H | 10.16 x 2.17 x 1.38 inches | | 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 | 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 Count | | Upper Temperature Rating | 30 °C | ## Product Details - **Brand:** HMKIS - **Color:** Black - **Item Weight:** 120 g - **Power Source:** Battery Powered ## Images ![HMKIS Diamond Tester Pen with 60X Jewelry Loupe (Non-Rechargeable) - Image 1](https://m.media-amazon.com/images/I/61aVeFSmXyL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Why do I get diamonds in almost everything I test?** A: 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. **Q: Why does my device barely respond when I test diamonds?Why not work?** A: The L setting is specifically designed for large diamonds. If you use this setting to test small diamonds, the device will barely react. **Q: What should I do if I don't know the exact size of the diamond?** A: You can start by testing with the M setting. The M setting is for testing diamonds between 0.5 and 1 carat. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing product *by Y***E on July 20, 2026* This is an absolute gem of a find. Works very well and includes everything necessary for it's use. The microscope includes a UV light where you can check fluoresce and has good magnification for smaller stones. The tester itself can be powered by a battery or USB-C cable, which is more accurate and convenient. The tester can differentiate between glass and high hardness stones like Corundum, but struggles if you are testing similar hardness stones like corundum and moissanite. Overall would recommend a lot. ### ⭐⭐⭐⭐⭐ A great instrument *by T***T on September 5, 2026* It works very well. Quality made. Price is rt. A great help for my business. ### ⭐⭐⭐⭐ 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.jp/products/259672598-hmkis-diamond-tester-pen-with-60x-jewelry-loupe-non-rechargeable](https://www.desertcart.jp/products/259672598-hmkis-diamond-tester-pen-with-60x-jewelry-loupe-non-rechargeable) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-20*