Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (2023)

Did you know Moissanite is nearly impossible to detect unless you have the proper, “special” tester? Because diamond testers typically only test thermal conductivity of a diamond, they often give false positives to moissanite, a man-made diamond, with eerily similar properties to real diamonds. It is only when a dual test, both heat and electrical conductivity can an accurate yes or no be concluded.

Cheaper synthetic diamonds can easily be exposed via regular diamond testers, however, moissanite requires 2 part testing systems.

** Important **: 99% of the time a regular Diamond Tester as featured by our top 5 list will be adequate, however, there are professionals and serious diamond purchasers who require a deeper level of analysis and accuracy. Because Moissanite is so similar to diamonds, we have done extensive research into testing for a diamond’s legitimacy. With stakes as high as they are when purchasing diamonds, if you buy the right Moissanite tester it will save you countless time, money and headaches.

Starting off with our editor’s #1 top choice, this section contains features and benefits analysis for each major Moissanite Diamond Tester for sale. Features Pin Point Precision, Portable, LED, USB, Reporting, Accuracy, Ratings, Price and Value.

🏆 #1 – Presidium Adamas Diamond/Moissanite Tester Package with USB Charger

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (1)
Average Review: ⭐⭐⭐⭐⭐
# of Reviews: 15+

With only 3 reviews, this moissanite tester was chosen as the top pick based on brand name, Presidium, and an impressive laundry list of features. While other picks could be satisfactory below, this model is specifically designed to test for moissanite, whereas most makes and models on the market either admit they can not accurately discern diamonds from moissanite, or simply avoid mentioning it on their product offering specs. To prove its sincerity it actually has a meter which lists 3 possible outcomes: Moissanite, Diamond or Metal. It has a portable charger, and a very thin, stable point, which allows incredible precision on small stones (.01 carats). LED and USB charger helps bring Moissanite testers into 2021, offering sleek, practical usage on the go, without the burden of batteries. This product will accurately test your diamonds versus moissanite. It is certainly expensive compared to other diamond testers, but the only one proven to properly test moissanite, which is magnitudes more valuable than purchasing or buying a synthetic stone due to faulty equipment.

🔥Features and Benefits by Stuller, Inc

*Can Test for Moissanite accurately
*Precision based, sturdy, replaceable tip allows smaller stone testing
*LED lighting easy to read and analyze
*USB portable on the go, NO batteries required
*Trusted brand name

*Price, very expensive
*Limited # of reviews

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (2)

🥈 #2 – Original Presidium Multi Tester III Diamonds Moissanite ( Pmut III )

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (3)
Average Review: ⭐⭐⭐
# of Reviews: 83+

(Video) Moissanite v. Diamond Testers: Pass or Fail?

Another Presidium, this model tests thermal and electrical conductivity, giving a clear answer, diamond or moissanite. While cheaper than the editor’s #1 choice, it has more positive reviews than negative. A good sign is the complaints are not about accuracy predominately but rather arriving incomplete or simply not working out of the box. It has less features than the Adamas, but is a solid choice based on function and price.

*Can Test for Moissanite accurately
*Larger sample size of reviews
*Cheaper than Editor’s choice
*Trusted brand name

*Difficult to calibrate and setup
*Complaints include not working out of box
*Less features than Editor’s choice

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (4)

🥉#3 –Gemoro Testerossa Diamond, Moissanite & White Sapphire Tester

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (5)
Average Review: ⭐⭐⭐⭐
# of Reviews: 37+

Significantly cheaper than the two above, this moissanite tester has a decent amount of reviews but nearly 20% are negative. It comes with a leather case and ability to weigh diamonds/gem stones. If you are a bargain shopper, this should be considered, yet you typically get what you pay for in comparison to the Editor’s choice and #2.

*Much cheaper
*Decent # of reviews
*Micro USB Chargeable
*10 Year Warranty

*20% 1 star reviews, a disproportionate amount of negative results
*Brand less trusted than previous mentions
*Inconsistent testing results

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (6)

#4 – High Accuracy Professional Jeweler Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Jewelry Test Selection Tool Meter Device

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (7)
Average Review: ⭐⭐⭐⭐⭐
# of Reviews: 41+

Not as expensive as the first 2 choices, and in the middle of the average moissanite tester, it appears to be a generic form of other trusted brands, put out by “TekcoPlus”. With a very low sample size of reviews, it is positive but tentatively verified by the masses, which is why it’s listed 4th on the list. Because of it’s price point, it’s a riskier option than #3 based on price alone, and much riskier than the Editor’s choice based on features and positive feedback.

(Video) NEVER Trust A Diamond Tester... Here's Why (Scam Alert)

*Positive feedback
*Generic, non name brand
*Clear Moissanite or real diamond monitor on display

*Low # of reviews, can’t verify
*Generic, non name-brand

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (8)

🔍 ❌ Regular Diamond Testers Can NOT detect Moissanite Consistently

Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (9)Moissanite Tester - See Which 💍 Diamond Testers Fail and Actually Work (10)

🏆Click HERE to View Price: Editor’s Choice for Best Moissanite Tester

📑 FAQ Table of Contents:

What is a moissanite diamond?
What is the best fake diamond to buy?
Can you tell the difference between a moissanite and a diamond?
Is moissanite as good as a diamond?
How much is a 2 carat moissanite?
What is the best cut for a moissanite?
How can you spot a fake diamond?
Can you tell the difference between lab created diamonds and real diamonds?
Is moissanite a cubic zirconia?
Can you tell the difference between diamond and cubic zirconia?
Is a moissanite man made?
How many carats is 8mm Moissanite?
Can a diamond tester detect Moissanite?
Do moissanite rings last?
Can you scratch Moissanite?

(Video) CZ vs Moissanite vs Diamond - Testing With Diamond Tester

What is a moissanite diamond?

Is a moissanite man made?

The most succinct defintion is moissanite is a man-made synthetic diamond, an alternative to diamonds, a naturally occurring stone. Moissanite and diamonds have extremely similar properties, both in form and function. Because most diamond testers rely on thermal conductivity, Moissanite is given false positives routinely because it disperses heat nearly identical to its real counterpart, diamonds. While diamonds are extremely hard, a 10.0 on Mohs scale, Moissanite is not far behind at 9.25. Moissanite tends to refract light differently, projecting a brighter appearance. While beautiful, it is no diamond, which gains its value from its intrinsic natural properties versus a synthetic laboratory.

What is the best fake diamond to buy?

Is moissanite as good as a diamond?

Subjective, but objectively it comes down to budget and your goals. If your budget is extremely tight, a cubic zirconia is one of the most recognized “fakes” in the world, but moissanite wins in nearly every category, but is more expensive.

Can you tell the difference between a moissanite and a diamond?

How can you spot a fake diamond?

Yes. A skilled jeweler using a loupe or magnification tool should be able to discern based on the clarity and cut. Moissanite tends to be more brilliant, whereas diamonds have more imperfections (as they are not made in a laboratory). Basic diamond testers will not detect moissanite because of its heat properties being too similar, but the ones listed below will in fact test and differentiate real diamonds from fakes, specifically moissanite.

How much is a 2 carat moissanite?

A 2 carat moissanite can range in price from $675 to $1575. Just as diamonds are graded based on cut, clarity, size and color, moissanite’s are not all created equal. However, because they are man-made they are usually priced anywhere from 8-15x cheaper than natural diamonds.

(Video) $20 vs $400 Diamond Tester (SHOCKING RESULTS 😱)

What is the best cut for a moissanite?

Same is true for diamonds, the Round Brilliant Cut outperforms most in terms of popularity. Others include: Oval, Square, Emerald, Cushion, Heart and Pear. Because your going for a “wow” factor, the editor recommends a Radiant Cut, because it’s shape forces the eye to overestimate it’s size. Real diamonds of this size are typically very expensive, so it has a greater desired effect.

Is moissanite a cubic zirconia?

No. Both are fake synthetic diamonds, but moissanite’s quality is head and shoulders above cubic zirconia. Cubic zirconia are more clear, and easily distinguishable from moissanite. It also is less hard, less brilliant (doesn’t refract light as well), more abundant and much cheaper. Because the heat dispersing qualities of a real diamond and moissanite are so similar, a regular diamond tester is not able to successfully test for it, which is why a special tester the editor listed below is recommended.

Can you tell the difference between diamond and cubic zirconia?

Yes. A basic diamond tester as shown by the homepage is sufficient to test for a real diamond. You can also tell because a real diamond has imperfections and is not “clear” meaning you can not clearly see what is behind the gem stone due to the way natural light refracts in the gem stone.

Can a diamond tester detect Moissanite?

No and Yes. The basic ones can not, because they test for heat conductivity, which moissanites approximates very closely to a real diamond. They will produce false positives. You need special testers which test for not only heat, but also electrical conductivity. Because it’s more advanced and requires greater technology, it is more expensive.

Do moissanite rings last?

Can you scratch Moissanite?

The rings certainly last, as most offer life-time warranties because it’s very durable based on the Mohs scale of 9.25 hardness, just below a real diamond. Rick from Pawn Shop offers the advice of scratching the surface of a stone with sand paper and seeing if it damages it, as a synthetic will become degraded, whereas a diamond will remain unscathed, however Moissanite is tough enough to pass this test and produce a false positive.

😊 Conclusion: Moissanite is Amazing, yet Scary

Synthetic diamonds are here to stay, and only growing in popularity. I was extremely blown away by the properties of Moissanite, and the simple fact most diamond testers can not correctly discern whether it’s a genuine diamond or a fake. By acquiring this special knowledge, you are part of an elite group, who not only understands beauty in the intrinsic, but also the pros and cons of synthetics and how to avoid the pitfalls, using an industry standard 2-part testing system to know without doubt if a diamond is real, or simply a pretender. Diamonds are one of natures rare beauties, and while Moissanite attempts to recreate its look and feel, the replicable nature of its very existence diminishes the core tenants of a diamond: rare, value, forever, requires time to form.

(Video) How to Check if a Diamond is Real using Diamond Selector II and Moissanite Tester


Can a diamond tester mistake a diamond for moissanite? ›

For example, moissanite, a man made gem, may pass as a diamond on a standard tester pen. This is because moissanite also has very high thermal conductivity! Other diamond simulants, such as CZ, will not pass the tester. So, it's important to use multiple tests to confirm your stone!

Does moissanite test Real on a diamond tester? ›

A diamond tester will only test positive for diamond and moissanite. Synthetic moissanite has been used as a gemstone only since the 1990s, so if your piece is from an earlier era, it's definitely a diamond if it passes this test!

Can a normal person tell the difference between moissanite and diamond? ›

Most people cannot tell the difference between moissanite and diamonds. The GIA has even stated that moissanite is “much closer to diamond in overall appearance and heft than any previous diamond imitation.”

Does moissanite pass diamond tester Reddit? ›

Short answer: the standard/old school diamond testers will (should) always test positive for moissanite :) Are you having an issue with something not testing positive?

Can jewelers tell moissanite? ›

The true way to tell the difference? You'll need some professional equipment. A diamond tester is used to detect whether or not a stone is a real diamond by measuring how heat moves through it, but because moissanite heat conductivity is close to that of a diamond, it's not a surefire bet.

What diamonds will pass diamond tester? ›

Yes, lab diamonds have the same carbon composition as natural diamonds. Therefore, they have the same thermal conductivity. The test results are positive when exposed to the diamond tester, since the diamonds have the same physical and chemical properties as natural diamonds.

What is the downside of moissanite? ›

They're Way Too Shiny. Moissanite has a crazy amount of sparkle. Its refractive index is higher than a natural diamond's, producing more shine and a special kind of fiery rainbow brilliance. While some people go crazy for these sparkles, others turn up their noses at them.

Do moissanite sparkle as much as diamonds? ›

In general, moissanite may have more brilliance than a diamond. “It has more fire and brilliance than any other gemstone, meaning it has more sparkle,” reveals O'Connell. “Because moissanite is double refractive, it is cut differently than diamonds to enhance the sparkle.”

Which moissanite looks most like a diamond? ›

If you're buying Moissanite it will most likely be listed as colorless. This is the equivalent of a DEF color diamond. Some Moissanite brands like Charles and Colvard sell a near-colorless Moissanite that is the equivalent of a GHI color diamond.

Do you get a certificate with moissanite? ›

Yes, All of Our jewelry comes with a Certificate of Authenticity. Every certificate includes detailed information about your item including color, cut and clarity. Are Forever Moissanite Jewelry products brand new?

Why is moissanite not as popular? ›

Given the circumstance of this gem's origin, natural Moissanite is not available to be mined and astronomically expensive to source. When the idea of engagement rings became popular around 1910, Diamond had enough natural supply in the mines around the world to meet the demands of the newly adopted proposal culture.

What can damage moissanite? ›

Exposure to the elements – Prolonged exposure to light and heat can seriously damage jewelry. For this reason, it's important to keep your moissanite ring in a cool, dark location, such as a closet. Likewise, don't keep your ring near a window or in the bathroom.

Does moissanite get cloudy over time? ›

We've got good news for you: moissanite does not get cloudy! However, chemical buildup and dirt can start to dull its shine; same as with diamonds and other precious stones. If you keep your moissanite clean, it'll be crystal clear forever.

What is the most realistic moissanite cut? ›

Cut Grading: the wide, clear “table” of the emerald cut really highlights the clarity and brilliance of moissanite stone. While the heavily faceted oval, pear and round cuts are unbeatable for refracting light, the emerald cut is the best style for exhibiting the natural clearness and depth of precious gemstones.

What is the highest quality moissanite? ›

Forever One Moissanite is considered the most premium brand of Moissanite available. Forever One Moissanites are created by Charles & Colvard, a USA based company. It is the original creator of Moissanite gems, and has more experience with creating and faceting Moissanite gems than any company on earth.

Does moissanite float in water? ›

Fake diamonds are not as thick, and therefore, more likely to float in water. This test is not always foolproof. Some materials that make up fake diamonds, such as cubic zirconia and moissanite, can sink if they are heavy enough.

Do diamond testers work on all gems? ›

A: Yes, it works on both artificial gemstones and natural gemstones.

Can you trust a diamond tester? ›

Diamond testers are always accurate. However, the thermal diamond testers can be faulty when testing moissanite because it has a similar heat conductivity rate to natural diamonds. The other testers will work because moissanite has different electrical conductivity rates than natural diamonds.

Why are some moissanite so cheap? ›

Moissanite is cheaper than diamonds because it is created in a lab. Rather than going through countless hands and endless red tape, it is created on-demand in the exact quantity, quality, and location that the company requests. This is a tremendous cost-savings for jewellery shops and brands.

Can you shower with a moissanite ring? ›

Yes, you can wear your moissanite engagement ring in the shower. On its own, water will not harm your moissanite stone. However, repeated exposure to soap, shampoo and conditioner can create a build-up of oils on the surface of your ring.

Which is better moissanite or lab created diamonds? ›

On the Mohs Scale, moissanite gems score a 9.25, while lab grown diamonds receive a 10. Both scores are very good, making each stone well-suited for everyday wear in engagement rings and fine jewelry.

Why do people choose moissanite over diamonds? ›

Today, moissanite is sought after for its resemblance to diamonds as well as its unique sparkle. Beyond their diamond-like appearance, moissanites are known for their fiery brilliance, uncompromised durability and attractive price, making them an increasingly popular choice for engagement rings.

Do moissanite diamonds hold value? ›

Yes, moissanite engagement rings have a healthy value in the ring resale marketplace. You can always sell your old moissanite ring or replace it with a new one if you feel it has altered in color or quality.

Why choose moissanite over diamond? ›

Moissanite disperses light very well and has higher light refraction than Diamond and will appear more brilliant. Additionally, Moissanite is less likely to attract grease or dirt over time than a Diamond due to its crystalline structure which should help keep the 'sparkle' longer between cleanings.

What sparkles more CZ or moissanite? ›

The higher the refractive index, the more brilliance the jewel emits. Moissanite's dispersion of light is 58% greater than a CZ. Therefore, Moissanite emits more fire, or flashes of rainbow light, than CZ. The luster of Moissanite is 50% higher than that of CZ.

What is the truth about moissanite? ›

It was originally discovered by the French chemist Henri Moissan in 1893. Moissanite is used as a ring gemstone because of its hardness and optical properties. While moissanite exists naturally in the earth, it is so rare that most are created in a lab to produce pieces large enough to cut into gemstones.

Are there different grades of moissanite? ›

All moissanite rings have the same brilliance, fire, durability, clarity, and quality. The only difference is the color hence having different grades of moissanite. Different grades are depending on the color they have. They include the forever one colorless, the forever classic, and forever brilliant.

Can you sell a moissanite diamond? ›

Diamond jewelry resells at roughly 25%-35% of its retail value. Moissanite retail value is also much higher than its resale value but the news here is somewhat better, moissanite can be resold for 50%-60% of its purchase cost.

How do you authenticate moissanite? ›

Moissanite has telltale fire as well as facet doubling from a side view. So, when trying to tell if someone has a Moissanite ring or a diamond ring, move the ring around and watch its sparkle carefully.

What is better than moissanite? ›

Diamonds are preferred to moissanite as they are a rare, naturally occurring gemstone prized for their beauty.

What stone looks most like a diamond? ›

Moissanites or white sapphires are most comparable to a diamond. While there are visible differences, these gems will look the closest to a diamond while offering a more affordable price. These stones are also high on the Mohs scale of relative hardness, making them suitable for everyday wear.

Does vvs1 pass diamond tester? ›

Testers. earrings. of $30-$100k studs and passes many diamond testers.

Do black diamonds pass diamond tester? ›

No, diamond testers do not test black diamonds. A diamond tester only detects white diamonds. Black diamonds are opaque, even if you use a high-quality diamond tester in it, the result may be inaccurate.

Can a diamond tester test small diamonds? ›

The Adamas by Presidium distinguishes diamonds from moissanites and other diamond simulants through thermal and electrical conductivity. It is the world's first diamond and moissanite tester with a replaceable tip, and a micro probe tip—for authenticating diamonds as small as 0.01 carats.

Can SI diamonds pass the diamond test? ›

In most cases, a diamond clarity grade like SI, "Slightly Included," will work perfectly. Sometimes, it won't. Learn whether an SI clarity diamond is right for your engagement ring and when to opt for a different clarity. There's no way to guess the clarity of an SI diamond without looking at it very closely.


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