Solutions and careTank side$999
Bench instruments for jewelry
Bench instruments built for daily work
We machine our chassis, grind optical lenses, and wind transducers for demanding jewelers and trades. Our equipment gives you dependable readings and clean metal every single morning.
Explore instrumentsCheck a stone first
38 instruments • 6 benches • 4,769 owner ratings
In-house transducers
We build our own piezoceramic stacks to drive steady cavitation through deep wash tanks.
Achromatic optics
Every triplet loupe carries three ground lenses bonded to cancel color fringing under bright light.
Matched chemistry
Our concentrate blends lift stubborn polishing rouge without clouding sensitive natural gemstones.
Dry calibration
Digital sensors in our precious metal testers measure surface conductivity without acid drops.
Our hardware
Tools for every station
Look through thirty-eight bench instruments designed for washing, weighing, testing, and checking fine jewelry.
All five benchesProven trade standards
These five core instruments sit on casting benches, pawn counters, and appraisal desks nationwide.
Solutions and careTank side
Tanks and steamersBench top$12995
ScalesWeighing stationXP500
Platinum XP500 Extra-Precision Pocket Jewelry Scale, 500g x 0.01g
- Capacity
- 500 g
- Reads to
- 0.01 g
$3995
Solutions and careTank side1 QT
Ultrasonic Cleaner Concentrate, 1 Quart
- Volume
- 1 quart concentrate
- Dilution
- 40 to 1 light, 20 to 1 heavy
- Formula
- Non toxic, non flammable
$2195
Tanks and steamersBench top$24995
TestersIntake counterTesterossa Diamond Tester
- Separates
- Diamond, moissanite, white sapphire
- Also has
- UV fluorescence check
$29995
TestersIntake counter$24995
TestersIntake counter$39995
Ultrasonic power
Heated tank wash systems
Industrial transducers scrub grease and rouge out of tight basket settings using matched liquid concentrate formulas.
View cleanersOptical clarityAchromatic hand loupes
Three cemented glass lenses correct spherical distortion so you inspect diamond inclusions with honest color.
View opticsFresh bench arrivals
Recent updates to our electronic testing probes and compact digital scales bring faster results to your tray.
ScalesWeighing stationShort run, the listing shows what is left
$19995
ScalesWeighing stationPCT251
Platinum PCT251 Carat Scale, 250ct x 0.005ct, Digital Gemstone Scale
- Capacity
- 250 ct
- Reads to
- 0.005 ct
Short run, the listing shows what is left
$11995
TestersIntake counterUltraDock 3 Tester Charging Stand
- Fits
- Testerossa, UltraTester 3/3+, PRO-D 3 and PRO-M3
- Job
- Holds and charges the tester
- Power
- Runs off the tester adaptor
Short run, the listing shows what is left
$3495
TestersIntake counterPro-D 3 Diamond Tester
- Separates
- Diamond and white sapphire
- Probe
- Retractable tip
- Also has
- UV fluorescence check
Short run, the listing shows what is left
$18995
Built for honest measure
Thirty-eight purpose-built instruments ready for repair counters, intake desks, and private studios.
38instruments on the bench
6benches to work from
4,769owner ratings behind them
4.3 / 5averaged across our listings
Solid metal construction
Heavy cast housings and stainless tanks shield delicate electronics from workshop vibrations, daily water splashes, and caustic buffing compounds.
Direct optical correction
We grind our loupe elements from optical glass to eliminate edge distortion, giving you true clarity across the entire field.
Benchtop calibration
Our digital diamond probes and balance scales include onboard reference standards so your team verifies zero point in seconds.
Setting up your station
Inspect and verify
Place the stone under a corrected triplet loupe and run your electronic probe to separate diamond from moissanite.
Weigh the parcel
Calibrate your draft-shielded balance with the enclosed brass mass before recording total carats or pennyweights.
Wash and dry
Immerse cast mountings in heated ultrasonic fluid, rinse in fresh water, and finish under dry pressurized steam.
Instrument lineup
| Bench | What the number is | Range we cover |
|---|---|---|
| Tanks and steamers | Tank volume and steam pressure | 2 quart • 3 quart • 24 oz, 700 ml • 50 psi of dry steam |
| Scales | Capacity against readability | 100 ct up to 6000 g • steps of 0.005 ct to 0.1 g |
| Testers | What the probe separates | Diamond against moissanite and white sapphire • 6k to 24k on gold, plus platinum |
| Loupes | Power and lens build | 5x • 10x • 10x to 30x |
| Solutions and care | How much solution it makes | 1 quart and 1 gallon concentrate • premeasured packets • cloths, wands and baskets |
| Light and sizing | What it settles before you start | A shadow-free grading field • ring sizes 1 to 17, half sizes included |
Core instrument
Black Diamond Brilliant Spa
Our combination thermal and electrical conductivity testers check loose stones and mounted rings without changing tips. Microprocessor circuits separate cubic zirconia, moissanite, and diamond in one continuous motion.
- Steam
- 50 psi
- Light
- Blue LED over the tank
$129954.1624
Good practice
- Calibrate scales on a level marble slab away from drafts
- Wipe tester probe tips with clean suede before measuring
- Preheat cleaning tanks to loosen hardened polishing compound
- Store optical glass inside leather sleeves between bench sessions
Bench hazards
- Never drop emeralds or pearls into heated ultrasonic tanks
- Avoid pressing testing pins into soft metal with heavy force
- Never leave dirty wash solution standing in empty tanks overnight
- Do not touch optical lens surfaces with bare oily fingers
Choosing safe wash methods
Different gems and mounting methods demand distinct cleaning temperatures. Use this reference guide to match stones with ultrasonic cavitation, pressurized steam jets, or simple soft-bristle hand brushes.
All 24 entries| Piece | Ultrasonic | Steam | By hand | Why |
|---|---|---|---|---|
| Diamond, clean and well set | Yes | Yes | Yes | A sound diamond takes anything. The risk is the setting, not the stone. |
| Diamond with a visible feather | No | Care | Yes | Cavitation finds the fracture and opens it. Steam can too if the piece is cold. |
| Fracture filled or clarity enhanced diamond | No | No | Yes | The filler is glass. Heat and cavitation both drive it out. |
| Ruby and sapphire, untreated | Yes | Yes | Yes | Corundum is hard and takes a tank well. |
| Ruby with glass filling | No | No | Yes | Common in low cost goods. The filling will not survive either machine. |
| Emerald | No | No | Yes | Almost every emerald is oiled or resin treated. A tank strips it and the stone goes cloudy. |
| Opal | No | No | Care | Porous and full of water. Heat and vibration both crack it. Wipe only. |
| Pearl and mother of pearl | No | No | Care | Nacre is layered and glued to a bead. Damp cloth, nothing more. |
| Turquoise, coral, amber, jet | No | No | Care | Porous or organic. They absorb the solution and stain. |
| Tanzanite | No | No | Yes | Perfect cleavage. It splits along a plane and vibration is exactly the wrong input. |
Scale capacity and precision
Selecting the right digital balance depends on your daily trade. This comparison chart plots total pan capacity against readability across our portable and benchtop models.
Every scale we makePlatinum PCT101 Carat Scale, 100ct x 0.005ct, Digital Gemstone Scalereads to 0.005 ctPlatinum PCT251 Carat Scale, 250ct x 0.005ct, Digital Gemstone Scalereads to 0.005 ctPlatinum XP500 Extra-Precision Pocket Jewelry Scale, 500g x 0.01greads to 0.01 gPlatinum PRO501VXP Professional Jewelry Scale, 500g x 0.01greads to 0.01 gPlatinum V600M Mini Jewelry Scale, 600g x 0.1g, Digital Portable Scalereads to 0.1 gPlatinum MP601 Jewelry Scalereads to 0.1 gPlatinum PRO1001DXP Professional Jewelry Scale, 1000g x 0.01greads to 0.01 gPlatinum PRO1601 Professional Jewelry Scale, 1600g x 0.1greads to 0.1 gPlatinum PRO6000 Professional Jewelry Scale, 6000g x 0.1greads to 0.1 g
Bars are drawn to a common scale in grams, so a 100 ct carat pan and a 6000 g bench pan sit on the same axis. Capacity is how much it holds. Readability is the smallest step it will show, and the two are not related.
Magnification at the bench
A 10x lens reveals standard clarity inclusions. Higher 20x and 30x triplet optics let setters examine prongs, laser inscriptions, and micro-pave seats with crisp focus.
Matched bench stations
We group complementary cleaning machines, testers, and optics to outfit specific jewelry workstations efficiently.
Collectors caring for personal jewelry at home
Home jewelry care kit
We combine our cleaning solution, touch-up pen, folding loupe, and precision scale so you can inspect settings, track piece weight, and maintain everyday luster on your own schedule.
Repair benches taking in metal scrap
Counter intake bench kit
We build this setup with our gold tester, pen probe, diamond tester, and bench scale to give clear readings on alloy content and stones while recording intake weights.
Store counters cleaning client pieces daily
Retail service cleaning station
We assemble our ultrasonic bath, concentrated solution, mesh basket, compact steamer, and stereo microscope to clean client rings thoroughly and inspect mountings before returning them across the counter.
3-Quart Ultrasonic Jewelry CleanerTank 3 quart$445.95Black Diamond Brilliant SpaSteam 50 psi$129.95
Ultrasonic Cleaner Concentrate, 1 GallonVolume 1 gallon concentrate$45.95
Diamond Saver Basket, Stainless Steel Ultrasonic Cleaner BasketMaterial Stainless steel mesh$9.95
Elite 1030 LED Microscope for Jewelry, 10X-30X MagnificationPower 10x to 30x$499.95Matching instruments to bench questions
Identify unknown materials quickly. This reference maps your specific testing question to the exact electronic tester, optical loupe, or mechanical gauge built for the job.
Is this stone a diamond?
A thermal and electrical probe separates diamond from moissanite and white sapphire in seconds.
TestersWhat karat is this metal?An electronic tester reads a karat band off a clean spot of gold or platinum.
TestersWhat does it weigh?Carat models resolve five thousandths of a carat, gram models carry up to six kilograms.
ScalesAre the prongs sound?A ten power triplet shows a lifted prong before the stone leaves with it.
LoupesHow do I get the film off?A tank shakes a whole basket at once, a steamer puts a jet where a brush cannot go.
Tanks and steamersWhat goes in the tank?Non ammoniated concentrate, premeasured packets, and a basket for anything loose.
Solutions and careWhat size is that finger?A sizing gauge reads off like a belt, and a grading lamp holds a colour temperature the eye can trust.
Light and sizingBench measure terms
- Carat
- A metric unit of mass equal to two hundred milligrams, used strictly for weighing loose gemstones.
- Karat
- A measure of gold purity out of twenty-four parts, indicating the ratio of precious metal.
- Point
- One hundredth of a metric carat, used to record small diamond weights without fractions.
- Grain
- A traditional unit equal to one quarter carat, commonly referenced when handling natural pearls.
Built for the trade
We design and assemble bench tools that withstand continuous trade use. From the heavy heating elements in our steam boilers to the micro-circuitry in our gold testers, every component serves an honest purpose at your station.
Bench equipment for jewelry professionals
GemOro builds dedicated machinery and testing hardware for working bench jewelers, retail staff, and precious metal buyers. Our product range includes digital carat balances, ultrasonic wash tanks, pressurized steam boilers, conductivity testers, and achromatic loupes. Every tool uses durable switches, heavy chassis plates, and serviceable connections to support daily intake and fabrication work.
Whether you test gold content on buying trays or wash buffing grease off finished mountings, reliable instruments prevent costly trade errors. We mix specialized cleaning solutions, calibrate precision electronic sensors, and shape triplet glass lenses. Our manufacturing focuses on repeatable operation under demanding shop conditions without complex setup routines or delicate handling requirements.
| Tanks and steamers | The machines that do the work: ultrasonic tanks that shake film off a whole basket at once, and boilers that put a jet of steam exactly where a brush cannot reach. |
|---|---|
| Solutions and care | What goes in the tank and what happens after it comes out. |
| Scales | Two numbers matter on a scale and they are not the same one. |
| Testers | A tester answers one question quickly: is this what it claims to be. |
| Loupes | Nothing on this list is a guess once you have looked. |
| Light and sizing | Two jobs that happen before the instruments come out. |
| Least expensive instrument | $1.09 |
|---|---|
| Most expensive instrument | $499.95 |
| Instruments under $50 | 21 |
| Instruments over $200 | 9 |
| Distinct listings behind them | 34 |
- Ultrasonic wash tanks feature stainless steel reservoirs and industrial transducers
- Electronic gold testers analyze alloys from eight to twenty-four karats
- Triplet loupes use three bonded glass lenses to eliminate color dispersion
- Bench balances offer switchable units including carats, pennyweights, grams, and ounces
- Pressurized steam cleaners generate constant dry vapor to strip rouge residues
Where to start. Choose your primary bench task. Match intake verification to our electronic testers, fine appraisal to our 10x optics, or finished fabrication cleanups to our ultrasonic tanks and high-pressure steam boilers.
From our bench
Straightforward technical notes and practical operation guides written by the hardware makers.
I have an Ultrasonic jewelry cleaner and have used these premeasured packets to clean bracelets, necklaces, and earrings. They have always come out clean and sparkling. I like that I don't have to measure out from a bottle of solution.
I'm addicted to it I got this to clean my engagement ring because I spoke to the jewelry and he said steam was the best. Omg it gets all of my jewelry so clean and I feel better not using harsh chemicals. A great investment, very portable.
Great jewelry cleaner. I'm a jewelry photographer so I need to make sure all the dust and dirt from manufacturer is off the pieces before I photograph them. This cleaner does the job! Great value for the money and a little bit goes a long way. Would highly recommend.
Find our tools today
Pick the bench you are working at, read what the instrument actually does, and buy it from the listing that stocks it.