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Smart Weigh GEM20 High Precision Digital Milligram Scale 20 x 0.001g Ideal for Weighing Gems, Jewelry and other Precious Objects (Silver)

by Smart Weigh
4.0 out of 5 stars  See all reviews (22 customer reviews)

List Price: CDN$ 44.99
Price: CDN$ 39.99
Sale: CDN$ 26.99 & FREE Shipping. Details
You Save: CDN$ 18.00 (40%)
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Product Features

  • Smart Weigh brings you a digital jewelry pocket scale designed to fit the needs of all your Jewelry, Gold and Silver, Coins weighing tasks in a most professional manner
  • The GEM20 will weigh up to 20 grams in increments of 0.001 grams (1 milligram) its electronic high grade precision sensors guarantee you a precise weighing session
  • The scale features 6 different weight modes; g / oz / ct / ozt / dwt / gn. The TARE key allows you to determine net weight
  • All this in a highly visible LCD backlight display and large size digits that makes it easy to read in all light conditions
  • Smart Weigh includes with this model a set of tweezers and calibration weights for accurate recalibration, to ensure precise weighing of your precious possessions!

Frequently Bought Together

Smart Weigh GEM20 High Precision Digital Milligram Scale 20 x 0.001g Ideal for Weighing Gems, Jewelry and other Precious Objects (Silver) + Norpro 3080 Mini Measuring Spoons, 5-Piece Set + American Weigh Signature Series Black AWS-100 Digital Pocket Scale, 100 by 0.01 G
Price For All Three: CDN$ 46.65

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Product Details

Product Description

Smart Weigh Gems Digital Scale – GEM20


The GEM20 Digital Scale is a perfect scale for weighing jewels or any kind of small precious objects, such as coins, gemstones, jewelry, gold, silver, etc, and it is extremely accurate. It has a very high capacity of up to 20 grams and professional accuracy of 0.001g. The GEM20 digital scale sets 6 different modes of measurement (g, ozt, dwt, ct, gn, oz) to meet different needs. It is small, compact and convenient to carry around and use on-the-go. The digital scale features a flip open protective cover, to protect the weighing platform and a back lit LCD display that helps make the numbers easy to read.

Tips & Care:

Prior to using your scale for the first time, remove the plastic insulation strips from the battery compartment. Place scale on a flat level surface, press the ON key to turn on the scale, wait until “0.0” (zero) is displayed, place the included tray on the weighing platform, you are ready to weigh. Place the object(s) on the included tray; wait a few seconds for the display to stabilize before taking a weight reading.


Tare key, to subtract the weight of an empty tray, container or box for net weight determination. Mode key, which allows you to change the measurement unit from grams to ounces to pennyweight to troy ounces - all in one measure!

What’s in the box:

Gems Digital Scale, Tweezers, 2x 10g Calibration Weights, User Manual, 2 AAA Batteries.

Customer Reviews

Most helpful customer reviews
5.0 out of 5 stars Excellent and Accurate Set of Precision Scales July 29 2014
I have an ongoing use for an accurate portable scale suitable for small items. We tend to visit our local auction on a weekly basis and my wife has a liking for jewellery which can be an outstanding bargain there. However, the majority of bidders are professionals who are interested in the scrap value of the items in the auction, rather than any aesthetic appeal, and bid accordingly so as to make a profit. It is hugely helpful to be able to assess the scrap value of items and pitch bids accordingly. This item is perfect for the job.

These scales are a convenient size being approximately 4.0 inches by 3.5 inches by an inch, and can easily be carried in my wife's handbag. As far as accuracy is concerned, when I tested these against the two 10 gram weights supplied, they came in at about 0.02 of a gram heavy. This level of accuracy is fine for my purposes. However, I then used the recalibration method described in the instructions which was very simple and took all of about 30 seconds and they then measured within 0.002 of a gram of the supplied weights.

The scales are only suitable for relatively small items as the range is up to 20 grams or roughly 0.7 of an ounce. As a guide a ring would typically weigh about 3 grams. They take two AAA batteries which are supplied and easily replaced with a clip-on cover at the back. The unit turns itself off after a short period of non use to preserve battery life. Alternative measurements are in carats, grains, OZT or DWT.

I was very impressed with this set of scales which was exactly what I was looking for. Smart Weigh are very good at manufacturing this sort of precision item - this is the second very small digital scale of theirs which I have reviewed and I have had no significant criticism of either.
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1 of 1 people found the following review helpful
5.0 out of 5 stars Great Little scale Jan. 16 2014
Verified Purchase
I purchased this scale for reloading ammunition. I seen the other reveiws and thougt, what do i have to loose but the 25$$.

First the package came reasonably quick to my surprise. I opened the package to find a hard covered case that opens from the front and is held closed with a magnetic latch. The scale is held in place inside with a thin layer of foam to keep it from being bumped around. I pulled the tiny little scale out. I did not realize that this scale would be quite this small. The entire body of the scale measures 3.25" x 3.5" rouphly speaking. The first time I pulled the scale out, the scale was cold. After reading the instructions I realized that the scale must be warmed to room tempature before trying to use it other wise it will not be accurate! The scale also includes a manual that helped me recalibrate the scale as it was out by .23g. The book also said that this was to be expected especaily if the scale had got to cold or also altitued related. the scale itself has a small area where the dish can sit, this area is 1/2" in dia. Because of the way the top of the scale is formed you have to use the dish that it includes as the scale area itself is inset to the top of the scale body. I ended up putting the dish onto the scale then using a larger dish ontop to hold enough powder. This scale is way more accurate then the balence beam scale I have been using up till now. The first thing I would change is the fact that it has an auto shut off that turns off after about 1-2 min (I did not time it). I would recomend this little scale to anyone whanting an inexpesive way to weigh anything.
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1 of 1 people found the following review helpful
5.0 out of 5 stars Excellent and easy to use Nov. 26 2013
By Cam0m0
Verified Purchase
It's perfect, reliable and easy to use. The price is excellent and the shipping didn't take too long. I would recommend this item to whoever requires to precisely measure in oz ,grams, carats, or about any kind of measurement for jewellery.
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1 of 1 people found the following review helpful
5.0 out of 5 stars great gift for "dirt fishing" Nov. 6 2013
By Marcia TOP 100 REVIEWER
Personally, I would never weigh my jewelry, but I have a friend who spends his weekends combing the abundant beaches of Vancouver w/a metal detector. He was thrilled with this scales and I was thrilled to see how pleased he was w/my gift.

The scales accuracy is the main feature plus the small size and ease of use. I pulled out the protection strip on the batteries, put the tiny metal 'cup' on the balance, turned it on and I was ready to go. the 2 x 10 gm. weights ensure the accuracy of weighing and the tweezers make it easy to weigh chains. everything needed for weighing gold and silver is included. highly recommended.
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1 of 1 people found the following review helpful
By SimonCanadian TOP 1000 REVIEWER
Verified Purchase
This scale is extremely small, about the size of an average hand, could easily fit in a back pocket or in a hoody pocket.

This scale has some aestetics, but if you are not looking for the precision buy the ACC200 Accustar pocket scale which is even smaller and has a bigger surface area to place your measuring goods!


Extremely accurate up to 0.001g!
Batteries included (rare these days)
2 x 10g weights to see precision of this little machine!
Practically weightless
Easy to read
Cheap, good price

Pretty much none!
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5.0 out of 5 stars Accurate jewelry scale July 15 2014
This digital scale is intended for jewels or other small objects, with a maximum capacity of 20 g in 0.001 g increments; 100 ct in 0.005 ct increments; 308.8 gn in 0.02 gn increments, or 12.86 dwt in 0.001 dwt increments. As one would expect, it is quite accurate.

The weighing bowl has a 1 1/4 in. diameter, a handle and small spout, perfect for mélée or metal dust. There is a hinged plastic cover to protect the mechanism. Underneath is the battery compartment with two AAA batteries included—don’t forget to remove the plastic strip that protects them from discharge during shipping. There are also four little non-slip feet.

The display is very easy to read and the buttons are easy to operate. It is a simple matter to calibrate, tare, or to change units and there is even an add-up feature for calculating the total weight of multiple objects.

Two 10 g calibration weights are included as well as a pair of fine-pointed tweezers for handling diamond melee or other tiny objects. There is a small pamphlet with complete instructions. The sturdy box is intended for long-term storage and is covered in glossy stock with foam inserts and a dual magnetic closure. The box is approximately 6 1/2 in. x 5 in. x 1 3/4 in.

This set is accurate and complete and is ideal for hobbyists. I would especially recommend this for anyone buying or selling jewelry to insure accurate weights and thus accurate prices; it could easily pay for itself.

MeasuRite provided a sample for evaluation and review.
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Most recent customer reviews
5.0 out of 5 stars Really good scale for the price
Excellent scale for the price. Hard to have it active on the 0-5 mg range, but still excellent for the price
Published 3 days ago by M. Razique
5.0 out of 5 stars Great for the money
Affordable, accurate and efficient. Do you yourself a favour and get one.
Published 6 days ago by Michael
4.0 out of 5 stars Four Stars
Excellent product
Published 18 days ago by Leonard Lipp
5.0 out of 5 stars Well worth it for reloading.
Great little scale for reloader. Would be nicer if there were an adapter to hold a powder pan rather than the very small pan that comes with the scale. Read more
Published 19 days ago by GMac17
1.0 out of 5 stars doesn't measure at all
It didn't tare properly with the provided "10g" weights, and just looking at the design it couldn't have measure anything. Read more
Published 1 month ago by Te Wang
2.0 out of 5 stars It is What It Is...
This scale came in less than satisfactory order, as it doesn't work without the calibration weights on it (which can be annoying). Read more
Published 2 months ago by Colin Macintyre
5.0 out of 5 stars SUPER SCALE.
Great accuracy for reloading handgun and rifle rounds for my competition shooting matches.
Consistency of load is a must and this scale delivers it.
Published 2 months ago by Mavgk
1.0 out of 5 stars Could never get it on tare.
i have no experience with trying to weight 1 or even 10 milligrams. I could never get this at 0.000. Thought it would be easier.
Guess not.
Published 2 months ago by Mitch
5.0 out of 5 stars Awesome.
Does what it was supposed to. Easy to calibrate, nice finish. smaller than i thought but works to the tee. For the price and free shipping you cannot go wrong
Published 2 months ago by Alexander
2.0 out of 5 stars Decent enough, but you get what you pay for
Decent scale for the price, but it does have some problems, namely that it's very inaccurate when weighing anything under 10mg. Read more
Published 2 months ago by ben
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