The sap of the tree of millions of years ago fossilized, Amber of biogenic origin. Amber, somewhere mysterious glow, was said to give power to the wise. The fire opal was born by the entry of hot water containing silicic acid into the lava cavity of the volcano, reminiscent of the flames that flicker as the name suggests. It is a jewel that fascinates viewers, with colors such as red and green dancing on a transparent substrate. Combining Mexican - made amber and Mexican - made opal, I knit delicately though it was an oriental atmosphere. Natural stone: Amber from Mexico Fire Opal from Mexico String: silk thread (slide adjustable) Decoration: Garnet · citrine · 14 kgf Adjustment section: Smoky Quartz 【About Silk】 Most of MARU's work uses silk. It is a delicate silk because it is a natural fiber, but you can use it for a long time by properly cleaning it. If you inhale sweat, please strike gently with a stiffly towel etc and drop it. Please be careful about handling as it is sensitive to water wetting and rubbing.