Internationally, there is no uniform standard for color grading of colored gemstone, and the major gemological laboratories all have their own color grading systems. The ability to establish a market-recognized grading system is the most reliable proof of laboratory authority.
GRS, in November 2019, introduced its latest color grade concept, Vibrant, with significant fanfare. In 2020, GUILD Labs will also evaluate Vibrant as a separate parameter from the color evaluation system for spinel.
Grading is quite subtle; it’s both academic and commercial.
The highest level of grading standards should not be too harsh – too difficult to play with, nor too relaxed – it will reduce credibility.
Moreover, the rating system should be adjusted to the market trend. In this case, the “vivid” rating is everywhere, we also need to introduce an additional level to stimulate the market at the right time. This is the same as playing a game. It used to be full of experts everywhere on the old servers. so it’s time to raise the level cap or open another server.
“Vibrant” vs.”Vivid” :
Vivid:
Vivid is a term not new to colored gemstones. GRS first used it for saturated, intense, bright and not overly dark colored gemstones in its certificate of authenticity. It can be used for a wide range of colors, including reds, pinks, blues, greens, etc.
The combination of Vivid Red and strong fluorescence in rubies produces pigeon blood red. Pigeon blood red is equivalent to Vivid Red in rubies with strong fluorescence. In emeralds, the highest quality of vivid green is Kiso. The best Vivid Green is Kiso Green.
In previous gradings, “Vivid” has focused more on the two dimensions of color brightness (value) and saturation (saturation).
Vibrant
“Vibrant” is a more comprehensive concept, with criteria such as “perfect cut, excellent clarity, very low dark areas and even color distribution.
A stone that is graded “Vibrant” on the GRS certificate means that the stone’s color is very bright – very low darkness, no color banding – a uniform distribution of color, and the clarity and cut are exemplary, which is why it has a stunning fire.
In short, it must be an “all-rounder” in terms of color, clarity and cut to receive a “Vibrance” rating.
A customer asked me what kind of gemstones were cost-effective. The truth is that there is no such thing as a good price for gemstones. It’s all about the product price. The so-called cost-effectiveness is to sacrifice a certain aspect of the parameters, and it happens to be this parameter you do not care too much about.
And when you’re dealing with a “Vibrant” rated stone, don’t think about value for money. Respecting the scarcity of nature’s top stones and understanding that the top of the pyramid is inevitably expensive is respecting your intelligence and your wallet.
