Multi tester for diamond, Moissanite, white sapphire. Ultratester 3+ by Gemoro

Summary

• Tests for diamond, Moissanite and white sapphire 
• The top of the tester lights up Dia, Mois, Saph, Metal 
• To see an article all about diamond testing click here. 
• Guarantee, 1 year.

The new ultra-low-conductivity Moissanites are difficult to test. The official GemOro video says this is, "the only tester that can correctly identify the new Forever One colourless Moissanite. All other testers will incorrectly identify it."  This is not true, a) other testers correctly identify them, b) this tester is not guaranteed to give a correct reading on any stone...because no tester is guaranteed 100% accurate!  However, the Ultratester 3+ is most definitely one of the best for identifying the new ultra-low-conductivity Moissanites.  

Operation

Switch on, wait for it to warm up, place probe on stone, see if it lights up Dia, Mois, Saph, Metal ('metal' means  you missed the stone and touched the setting), 

Technical

PHYSICAL

Dimensions: 7"X1½"X¾" 155X38X20mm

Weight: 95g

Tip: can test stones down to 0.02ct (2pt) in size. 

Operating temperature: between 18 and 27 degrees C (64 to 81 degrees F). 

RESPONSE TIME

Warm-up time when switched on: 20 to 30 seconds

Testing: result in 1 or 2 seconds

Warm-up time between tests: 2 or 3 seconds

UV

Whilst in operation the UV light is always on. 

POWER 

Rechargeable. Charge by plugging the USB cable into a USB power supply (e.g. a computer or a USB mains adaptor).  

You can also use it while the USB cable is plugged into a power supply, in which case it won't use the batteries. 

Battery life: no idea. Since rechargeable batteries aren't as powerful as non-rechargeable and the UV light stays on and there's a power on light- we'd guess a few dozen tests per charge.

Low-battery indicator: none, when it fails to warm up, it needs a new battery

Auto-shut-off: it turns itself off if not used for five minutes.

ACCESSORIES / PRESENTATION 

• zip-case
  
• stone-holder
• cloth to clean the stone (described as a 'diamond testing cloth')
• instruction booklet
  

Limitations

• Will not test fancy-coloured stones
• The battery compartment cover is very difficult to remove
• Synthetic diamonds (not to be confused with simulants!) usually register as Moissanite
• the Moissanite test is very sensitive, both stone and test-tip must be 100% clean and grease-free, you will cover the stone in a layer of grease simply by touching it with your finger (this is a 'limitation' for anyone expecting a quick-easy-accurate test).   

Disclaimer

All testers must be used in conjunction with the user's skill, knowledge and experience. Under no circumstances shall QUICKTEST be liable for direct or indirect loss sustained in connection with any item. Nothing is 100% accurate, you must understand the limitations of any tester. We also suggest you regularly test known samples to check for any obvious faults. 

Alternatives

Please note, none of the testers listed below will distinguish natural stones from synthetic stones. "Synthetic" is a scientific term meaning 'made by man in a factory/laboratory to the same formula found in nature'. The two are usually indistinguishable, synthetic diamond is diamond (read about synthetic diamond testers and see our ARI and ARETE models).

The testers below are to distinguish diamond from non-diamond (simulant/imitation).   

[1] All testers test loose stones but not all can test mounted (set in jewellery) stones.

[2] The probe / analogue meter will test mounted stones, the digital meter will only test loose stones.

[3] The probe / analogue meter: 17 stones; the digital meter: 40 stones.

[4] Skill and practice is required to use an optical refractometer, instructions are not included, see any textbook about gemmology…or the internet.  

Free gift details

If you would like one of the following free gifts with this product, select one from “Select your free gift” above.

	Steel Diamond Gauge, oval (RRP £4.50 )
	Bar Magnifier, large. 1.2x+6x, 210mm long (RRP £2.20 )
	Magnifiers that clip to glasses - clip to spectacles, double, binocular stereo (RRP £3.90 )