The needle-shaped inclusions contained in the black sapphire shines as a six-joo star by shining strong light. Ako and pearls are added to make it simple and delicate. Natural stone: Black Star Sapphire Decoration: Akoya pearls, labradorite, silver925 Silk: Platinum (Hakukin) Navy blue Adjustment: Smoky quartz (slide adjustment) String length: about 11cm and 16cm from the center of the stone [About Silk] This work uses silk. It is a delicate silk because it is a natural fiber, but it can be used for a long time with proper care. If you inhale sweat, gently tap it off with a tight towel. Handle with care as it is vulnerable to water and rubbing.