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Difference from natural jade
Around the world, enhancement processing (processing to bring out beauty) and treatment processing (processing such as adding pigments) are sometimes used to create uniform color and high transparency and luster.
There is no way to procure Itoigawa Jade except directly from those who own the rough stones in the Itoigawa area, and there is no room for processors to intervene. Unprocessed and natural jade has a unique charm, and it can be said that it is easy to prove that it is genuine.
Jade has a very distinctive appearance, but it is very difficult for the unfamiliar to distinguish it from nephrite or artefacts by appearance. By actually seeing and touching a lot of jade, you will be able to distinguish the real thing.
At Kotaki, the craftsman Kayuki Akabane, who has been working with Itoigawa Jade for many years, directly purchases the jade, so we are proud to sell only genuine Itoigawa Jade.
How to recognize the value of Itoigawa Jade
The value of Itoigawa Jade is determined by its rarity. Scarcity value means that the supply is less than the demand. A popular stone with a small production volume has a high rarity value, and a stone with a low production volume that is not popular cannot be said to have a high rarity value.
Pyramid diagram of the rarity value of Itoigawa Jade
premium
Even within the Itoigawa region, jade is popular because of its low production volume, such as the rare blue jade called "Irikonzawa" that can only be mined in a specific area, and the pure white, transparent jade called "Ice Jade".
high quality
It is a unique jade with a wide variety of colors and patterns such as dark green, lavender, and blue. Kotaki handles the most jade, which is included in this rank, and has a wide variety of colors, transparency, and luster. In general, among similar colors, stones with high gem quality are popular.
Graph of differences in color development, transparency, and gloss
for Basic
It is a jade that has been carefully polished from relatively common white and light green jade, as well as those with no color unevenness or luster. Although the transparency is modest, you can fully feel the original charm of Itoigawa Jade.
Color of Itoigawa Jade
The charm of Itoigawa Jade is the complex colors created by nature. The jadeite crystals that form jade are said to be naturally colorless, transparent or white. The combination of various elements creates a unique color.
Even with the same jade, there is no fixed color, and there are infinite variations such as shades and intermediate colors.
Itoigawa Jade color chart
dark green
Speaking of jade, many people imagine green, and it is a particularly popular color. There are not only vivid greens of fresh green, but also dark greens like coniferous forests. From deep green, you can feel the eternal nature.
light green/green
Pale and gentle light green is the representative color of Itoigawa Jade. It is perfect as an accessory to wear refreshingly.
White
Pure jade with no other elements is white. Depending on the size and arrangement of the particles, it can be creamy white like fresh snow or white with a pearly sparkle.
purple, lavender
Itoigawa Jade is said to produce the most beautiful mauve color among the jade around the world. Perfect for classic and classy outfits.
Blue (Irukon swamp)
Among the blue jade, the rare blue jade that can only be mined in a specific place (Irukonzawa) is famous. The clear sky-like light blue gives a refreshing impression, and the blue mixed with brown gives a fantastic impression.
black/gray
Jade that shines in jet black has a presence and is perfect for men's bracelets. The combination of green, blue, and white patterns in black and gray creates a unique texture.
