Summary

This is the absolute-best multi-tester for non-diamond / diamond / Moissanite

• this is best tester for the new (low-conductivity) Moissanites that show up as 'diamond' on most testers
• fastest response time (test-result in 1 second)
• left-handed or right-handed use
• thinnest probe (0.45mm) tests stones as small as 0.01 carat (1 point)
• can be used with batteries (included) or USB power (cable not included)
• in its case it's smaller an neater than other diamond testers.
• one year guarantee

Instruction manual (pdf download)

(youtube 

(web page)

Technical

Size 170mm (6.69 inches) X 31mm (1.2 inches) X 28mm (1.1 inches)

Weight 55g (1.94 oz)

Tests stones from 0.01 to 10 carats incl. mounted stones in any setting

Operating temperature 18 to 27 degrees C (64 to 81 degrees F)

Start-up time 10 seconds

Testing time 1 second

Warm-up time between tests 2 seconds

Power: three AAA batteries (supplied) or any USB power source (USB cable not supplied). NOTE: the USB cable is to power the tester directly, it does not charge batteries. Also, IF you use rechargeable batteries they must be lithium, not the standard NiMH.

Battery life: 2000 continuous tests with good quality alkaline batteries, eg Duracell 

Auto-power-off yes, if used on battery power it turns itself off after 10mns with no activity.

Guarantee: 1 year

Low battery indicator: yes

ACCESSORIES / PRESENTATION

Neat heavy-duty carrying pouch

Summary of instructions (you are meant to download the full instruction booklet).

Limitations

Will not test fancy-coloured stones; no 'low batt' indicator;   (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).  

Video 

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. 

Please note, none of these testers 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  and see our  and  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.