State of the art technology, detecting HPHT treated stones.
It is designed to make a measurement with the sample immersed in liquid nitrogen, therefore is only suitable for loose stones. The instrument makes a laser-excited photoluminescence measurement and will return an automatic pass or refer result.
The instrument will refer HPHT Type II diamonds and a percentage of untreated natural Type II diamonds. Any stones which are referred would require further testing in a lab environment,
using more sensitive, low temperature photoluminescence equipment. The DiamondPlus performs best on high colour Type II diamonds and the referral rate may increase as the strength of the brown colour increases.
DiamondPlus is approximately 15cm in width, 26cm in diameter and 10cm in height.
Size range: 0.05ct - 10.00ct - Designed to detect HPHT treated diamonds - Requires liquid nitrogen
The DiamondPLus requires the liquid nitrogen to sufficiently cool the sample down so that any features present in the PL spectrum are sharpened and therefore more easily analysed.
This instrument is ideally suited in a laboratory environment
This message may be displayed if the table of the diamond under test is not in contact with the fibre optic probe. Ensure the stone is securely attached to the holder before immersion in the liquid nitrogen.
It can sometimes take a few seconds for large stones to reach the correct temperature. Try to wait a few seconds after immersion before making a measurement.
The numbers relate to the properties of the features within the photoluminescence spectrum recorded by DiamondPLus.
For Support on IIDGR instrument issues follow the link below.