The Nitecore GEM8 is a professional gemstone identifier with infinitely variable brightness white light between 500 lumens and 1 lumen from a Cree XP-L HI V3 LED.
There are various models in the GEM series for different stones and the GEM8 is best used for small gemstone inspection due to the narrow head design in which the LED is attached directly to the lens to ensure zero light loss, ideal for identifying small item such as Jade beads, diamond ring, crystal beads etc.
The special design has a better beam focus, with the convergent light ensuring a clear inspection and the flat top of the GEM8 allows for close observation without scratching the item. The LED allows for great penetrability of the gem to identify the texture, technique, flaw or crack of gemstones and is great for identifying impurities of Jades.
The rotary switch is turned clockwise until a click is heard and the light come on at the lowest point and can be gradually made brighter by continuing to rotate the switch, allowing you to select the best output depending on the size of the gemstone. Turn the switch back anti-clockwise until a click is heard to turn the light off again.
The side of the torch has an integrated measurement scale so you can easily measure the size of the gemstone. The GEM8 is powered by two CR123A lithium metal non-rechargeable batteries or one 18650 lithium-ion rechargeable battery.
The advanced temperature regulation module allows the GEM8 to regulate its output and adapt to the ambient environment to maintain optimal performance.
Rotary switch allows infinite brightness
High efficiency constant circuit
Tail stand capability
Advanced temperature regulation
Turbo: 500 lumens; 1 hour run-time
Ultralow: 1 lumens; 500 hours run-time
Please note: Advanced temperature regulation technology allows the GEM8 to dynamically adjust the output performance according to it's temperature to prevent damaged from over heating. The turbo run-time is tested without the advanced temperature regulation, therefore results may vary between torch, battery and environment.
Tested to ANSI/NEMA FL1 standards in laboratory conditions using 1 x Nitecore 18650 3500 mAh lithium-ion battery.
Important Battery and Battery Charger Information
Primary Cells - Please note that CR123A lithium metal primary battery cells are not rechargeable.
Rechargeable Cells - If you are intending to use lithium-ion rechargeable batteries then you will also need to purchase a suitable battery charger if you do not already have one.
Please click on the Product Accessories tab above to view compatible batteries and battery chargers.
Type: Gemstone inspection LED torch
Operating Modes: Turbo-Ultralow
Luminous Flux: Up to 500 lumens
Beam Range: Up to 39 m
Lamp Type: Cree XP-L HI V3 LED
Batteries Required: 2 x CR123A lithium metal / 1 x 18650 lithium-ion
Run Time: Up to 500 hours on ultralow
Overall Length: 139 mm
Head Diameter: 9 mm
Barrel Diameter: 21.5 mm
Weight: 57.7 grams
Body Colour: Silver
Body Material: Aerograde aluminium alloy
Body Finish: Hard Anodised HAIII military grade finish
Environmental: Water resistant to IPX8 standard (2 m)
Impact Resistance: 1 m
Warranty: 5 years
Regulatory Compliance: CE / RoHS
Packaging and Contents
Supplied in retail packaging and includes:
Nitecore GEM8 LED light x 1
Lanyard x 1
Holster x 1
Spare O-ring x 2
Manual x 1