[jet black]

Jets (black dead amber) are the fossilized gemstone of driftwood for many years.
As a gemstone it is soft and light, it is easy to process and has been processed into jewelry since ancient times.
Polishing creates a unique soft and deep luster.
In Europe and America we represent jet black.

When Queen Victoria lost his husband Albert and he wore his long mourning for more than 10 years, he wore Jets jewelry and became recognized as an official Morning Jewelry.
Since the Meiji period, it has been adopted as one of the official morning jewelries of Japan and has become a penetration in the black formal region.
It is also preferred that it is lightweight and does not cause fatigue on your neck.

Although it is 0.35 inches (9 mm), it is tightened in black, so it is not too big. The jet itself is a light gemstone, so it wont feel uncomfortable when worn.