Quality Assessment Criteria at Our Store

-About our "natural gemstone" quality evaluation standards-

Regarding transparency and inclusions, which are difficult to understand from images alone, we classify and evaluate quality and beauty using our own grading standards, and provide easy-to-understand guidance to help you choose the loose item you are looking for from our extensive inventory. Masu.

*Inclusions in natural stones are proof that they are natural stones. Depending on the type, some gemstones always contain inclusions.
* Cabochon cut, cat's eye, and star cabochon loose cabochons are generally unpolished on the back side and often have natural unevenness, so according to our evaluation criteria, the top part is polished. We are only evaluating.

VVS Quality that makes it difficult to see inclusions with a 10x magnifying glass. *As it is a natural stone, there may be minute inclusions.

VS Quality that makes it difficult to see inclusions with the naked eye. *In the case of gemstones that contain many inclusions, the level of damage is slight.

SI Quality that allows inclusions to be seen with the naked eye. *Includes minute chips and scratches that are difficult to see with the naked eye, as well as insufficient fabric.

-About our "synthetic gemstone" quality evaluation standards-

Even in synthetic stones, it is common for inclusions to occur during the crystal formation stage, but since it is possible to grow crystals artificially with a certain degree of stability, our evaluation standards are even higher than that of natural stones . Classification is based on strict criteria .

VVS Quality that makes it difficult to see inclusions with a 10x magnifying glass. *Due to its nature, there are minute inclusions.

VS Quality that makes it difficult to see inclusions with the naked eye. *In the case of gemstones that contain many inclusions, the level is very slight.

SI Quality that allows inclusions to be seen with the naked eye. *Includes minute chips and scratches that are difficult to see with the naked eye, as well as insufficient fabric.

-Notes-

The grades listed above are our own standards developed based on comparisons with commonly available top-grade loose diamonds and based on our purchasing experience, and are completely different from diamond grade evaluations .
Similarly, our standards differ from those of other companies. Please consider this as a reference evaluation only.

[About published images]
We do our best to post images that faithfully reflect the real thing as much as possible, but as you know, a major feature of gemstones is that they can take on a variety of expressions depending on the type of light source, its intensity, and angle, so any Unfortunately, it is not possible to accurately reproduce and photograph the colors and textures under the circumstances.

In addition, colors may appear differently depending on the environment and settings of the device on which you view the image (colors are unique depending on the manufacturer of each monitor, and differences may occur depending on the settings).

We apologize for the inconvenience, but please acknowledge the above points before proceeding with the purchase process.