Charoite Silica Approximately 10mm The material name is from the time of purchase. This is not a bracelet. We do not provide any warranty for accidents or damage during product shipping. Color tones may vary depending on the screen's color settings. Due to the nature of online sales, there may be slight differences in the image. As these are natural stones, there may be inclusions, cracks, or chips that are difficult to see in the images. We may delete or relist items depending on stock availability. 1600