The 7 Best stone testers (2023 reviews)

• Date : August 17, 2023
• Categories : Jewelry Diamond Testers

We consider a stone tester to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: HMKIS stone Tester READ REVIEW

Best For blue topaz: Buy: Presidium stone Tester READ REVIEW

Best For estate sales tag sales: Buy: Hqdz stone Tester READ REVIEW

Best For Diamond Test: Buy: Asahijade stone Tester READ REVIEW

Best For multiple types of gems: Buy: Gemoro stone Tester READ REVIEW

Best primary Tester: Buy: Smartpro stone Tester READ REVIEW

Best Easy To Use: Buy: Velaurs stone Tester READ REVIEW

Best Overall: HMKIS stone Tester

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The hmkis stone tester is specially designed for your daily purpose and has plenty of most useful features. This diamond tester is a great deal with the jewler scope and rechargable 9v included. It can tell you if a stone is a real diamond or not. It can be distinguished, the hardness of jade and diamond of different materials is different, and the equipment can be distinguished. It also comes in a cardboard storage box for extra protection.

It is easy to use and comes complete with understandable instructions and guides for every gem and size. The diamond tester helps to identify real and fake diamonds, as well as other jade. If even slightly tilted, it will give no reading or alert as diamond. This device is very helpful to separate the jewelry.

• Great and reliable source of authentification
• Come in a cardboard storage box for extra protection
• Easy to use, and fun worked well
• Easy-peas for someone who is not a jeweler to test their diamonds

Best For blue topaz: Presidium stone Tester

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The presidium stone tester's superior materials makes sure that it ages well with use. It's certainly not industrial grade equipment, but good for the jewelry collector/reseller/buyer. The Presidium gem tester ii provides a quick and easy way to identify diamonds / moissanites and separates up to 16 common colored gemstones based on their thermal conductivity with its clear and direct analog display. It is developed to distinguish between diamonds and its other simulants using the principles of thermal conductivity. It will help you distinguish real gemstones from glass, for example, but will not tell you if they’re natural or lab created.

It comes with a nice case. It can be anything from a different stone that's been colored, all the way to colored/dyed glass. Even with both tools, it takes a keen eye, and training to truly know what you're looking at. It comes in a compact easy to store zippered bag.

• Redesigned to be more compact, sturdy and portable
• Good product, easy to calibrate and accurate
• Affordable, portable and easy to use, but has accuracy issues
• Come in colors that can imitate a lot of natural stones

Best For estate sales tag sales: Hqdz stone Tester

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Hqdz line of tester come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. Hqdz’s diamond tester pen and 60x led lighted loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap meet, etc. It is powered by dc 9v battery x 1 ( included) to test diamond turn on the switch. It is lighting up on the scale. It is reliable or precise enough to be used by jewelers. It comes with led lights and audio indication.

The test takes a few minutes, please turn off the power after the test is complete. It is great for estate sales and tag sales. It is also a great tool to have when testing your own jewelry. Alternatively, its also a great tool to have when testing your own jewelry.

• Great and comes with a lot
• Large / small switch for testing diamonds / - 8 points
• New and hot release

Best For Diamond Test: Asahijade stone Tester

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Best part: asahijade stone tester costs comparatively low and it is available to ship in 24 hours. It is a pretty good tool to have if you want to be sure that your diamonds are diamonds. It comes with the tester, a 9v battery that’s included a metal piece to put your stone, and leather case. It includes battery instructions and a leather pouch to keep it in when not in use. It includes a little stand that will allow you to test loose stones not in a ring.

It is battery powered for convenience. The reader must have a firm, proper contact with the test material, so you must hold it at a 90 degree angle to the stone in order to assure a proper reading. It is easy to follow instructions and as long as used correctly. The calibration settings are very important for the best results.

• You can also make it beep by turning the volume up
• Good brand reputation

Best For multiple types of gems: Gemoro stone Tester

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Gemoro is known for creating pragmatic and minimalist tester for people on the go, and its line of gemoro stone tester definitely falls in line with that reputation. It is also the exclusive master distributor for the leading hpht/cvd lab grown detector from yehuda, called the sherlock holmes 3. The ultra tester 3 + glowing light bar / probe tip cone glows pink for white sapphire detection. It will test them as natural diamonds. It takes a little practice to hold/use the tester correctly to get an accurate reading.

This unit tests thermal (heat) and electrical conductivity. It will sound and have a pink light. It is also the exclusive master distributor for the leading hpht/cvd lab grown detector from yehuda, called the sherlock holmes 3..

• Great and easy to use tester
• The ultimate tester for diamond fraud protection
• Gemoro protective ballistic nylon carrying case
• Detects the widest range of moissanite, including forever one moissanite

Best primary Tester: Smartpro stone Tester

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The smartpro stone tester's material feels more premium than its price would suggest. It has lab created diamonds and does work kind of quickly. It can tell you the difference between blue topaz and aquamarine. It is a remarkable designed gemstone tester with color estimator display for smoothly and seamlessly testing your precious stone and diamond. It will detect lab created gems, and naturally made gems. It is heated electronically, while the other is cooled by the gemstone being tested.

The ambient temperature in the office has to be at the very least 72 degrees for it to warm up. It also has a fantastic little manual for which the other unit does not. It is easy to use and not too difficult to understand. It will help determine if something falls into the ruby vs garnet category.

• Portable tester that can be used anywhere
• Best used for faceted stones indoors
• Identifies metals, simulants and diamonds instantly
• Needle points to glass just by waving the pen around

Best Easy To Use: Velaurs stone Tester

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Velaurs offers a variety of tester for personal choice and yet maintaining quality in all the variants. This diamond tester has a highly compact design and will help you to tell the difference between a genuine diamond and fake diamond. It is light, compact and easy to carry, designed for fast, accurate and safe diamond testing. It comes with a pu case and small testing platform for holding loose stones. It will make continuous buzzing sound when user accidentally touches metal rather than stone. It is easy to calibrate gems of various sizes. It is easy to use even for a new beginner. This item is very accurate and affordable.

• Can be used for fast, accurate and safe diamond testing
• Led light and audio result indication
• Simple calibration for stones of various sizes