DiamondView is the advanced tool used by NGG Jewellery for diamond surface fluorescence testing. When being irradiated with short-term ultraviolet rays To study the nature and direction in relation to crystal growth. The traces were recorded from different angles to be used to interpret the diamond specimens as natural or created in a laboratory.

Glow in diamonds What is Fluorescence?

Is very important This is because these properties are the characteristics that directly indicate the growth of diamonds in nature. Synthetic diamonds have different characteristics and cannot imitate naturally occurring diamonds. Or a specific color can help jewelers more accurately diagnose and confirm examination results obtained by other techniques. Whether natural diamonds, synthetic diamond or diamonds that have been improved.

Checking the Naturalness of Diamonds

In the initial examination Using DiamondView, jewelers are able to determine the natural color and growth characteristics of diamond crystals, finding that in most Type Ia diamonds, the fluorescence is blue to greenish-yellow. These diamonds often exhibit octahedral growth banding, while untreated group IIa diamonds are shaped like diamonds. It shows a bluish glow and blue patches are scattered throughout the granules without the phenomenon of residual glow While CVD synthetic diamonds can be found to glow in a variety of colors, such as red, blue, green or cyan, in the same bead. However, traces of growth can be seen in layers with a higher frequency than natural diamonds. Both HPHT typeIIa and IIb synthetic diamonds glow greenish-blue by showing the phenomenon of remaining glow and can see traces of crystal growth to form an octahedral fused cube. (Cubic-octahedral pattern) or hourglass shape. In an Hourglass-like pattern, HPHT type IIb synthesized diamonds exhibited a longer lasting glow than typeIIa.

A natural diamond exhibits a blue fluorescence and has unique signs of growth (image from IIDGR).

B CVD synthetic diamonds exhibit an orange fluorescence. There are traces of fine layered growth (image from GIA).

C HPHT synthetic diamond exhibits a blue-green fluorescence. There were traces of growth in the form of a mixed cube octahedron. (cubic-octahedral pattern) (image from IIDGR)

Author : NGG content creator