Diamond Experior

Summary

Very reliable make, GemTrue.  This is the latest model following on from their Diamond Plus. 

Automatic display, no need to adjust the sensitivity according to the size of the stone and the temperature, three lights: Diamond (= diamond or Moissanite*) or Other (= not diamond), or Metal (= you've  missed the stones and have touched the setting by accident). 

* This is a diamond-only tester, it does not test for any other stones; this is the simplest type of tester, the manmade stone Moissanite will register as diamond. 

Guarantee 1 year.

To see an article all about diamond testing click here. 

Technical

DISPLAY

Three lights, diamond, other or metal (see SUMMARY).

PHYSICAL

Dimensions: 6¼"X1½"X¾" 155X38X20mm

Weight: 80g

Tip: can test stones down to 0.03ct (3pt) in size, smaller if you have good eyesight and a steady hand.

Operating temperature: recommended between 5 and 38 degrees C (41 to 100 degrees F). 

POWER

Power: one PP3 battery (supplied)

Warm-up time when switched on: about 20 seconds

Response time (to give a reading) about 1 second

Warm-up time between tests about 1 second.

ACCESSORIES / PRESENTATION

Small, neat carrying case with stone holder slotted into a side pouch.

Battery included.

Limitations

This is a diamond-only tester, it will not test Moissanite, that means Moissanite will register 'diamond' (for other models see the ALTERNATIVES tab). 

A UV light serves no purpose when testing diamonds v. non-diamonds (though it does help with testing diamond v. Moissanite in the multi-testers). 

Alternatives

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 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.

	Polishing cloth medium-size, approx. 6.5 X 6.5 inches (RRP £2.00 )
	Bottle of Isopropyl for cleaning stones (RRP £3.50 )
	10X21 loupe (RRP £4.50 )