This piece has received many reviews saying, "It's even more beautiful in person than in the photos." This is a loop tie that can be used by both men and women. What is used in this piece is the actual wing of a Morpho butterfly, which has beautiful and vibrant wings. Within the small glass, we have captured the fleeting brilliance that nature has created. Each piece is carefully crafted one by one. The blue of the Morpho butterfly's wings is not due to pigment. It shines due to a phenomenon called "structural color," which is created when light hits the fine structure of the wings. Therefore, it is not a single color, but rather changes its expression quietly from blue to purple, green, and sometimes amber depending on the angle and the condition of the light. There is no other piece exactly like it. Even in soft indoor light, or on a cloudy day, it sparkles and exudes presence with just a little light. It is a scientific and artistic accessory that doesn't overstate itself in your outfit, but is only noticed by those who get close. The wings used are natural and real. Please refrain from using it in high-temperature and high-humidity environments (such as when bathing). The photos were taken by a window with natural light. Due to the nature of structural colors, the color impression may differ from the actual product depending on the light conditions, angle, and the device you are viewing it on. Please understand this beforehand. We hope you will experience the quiet brilliance that cannot be fully conveyed in photos, in person.