[Material: Soda glass][Size: Height: approx. 9.5cm, Diameter: approx. 9.5cm, Base width: approx. 7cm][Weight: approx. 480g][Capacity: approx. 300ml (when full)][Manufacturing method: Ryukyu glass product made using the glassblowing method][Country of origin: China (※ Food safety inspections in Japan have been completed)]
[What is firefly stone?... Firefly stone absorbs light from sunlight or ultraviolet rays from fluorescent lights! It emits the absorbed light in the dark!][Let's make firefly stone glow!... Place it as close as possible to a fluorescent light or desk lamp and wait for about 10 minutes! Make the room completely dark and turn off the lights. Or take it to a completely dark room. The firefly stone will glow beautifully.]
[Situations where firefly stone is often used... Birthday parties/Christmas/Valentine's Day/White Day/Anniversary/Parties, etc. as a surprise with cake][How to do the surprise... Pour juice into a glass that has been exposed to ultraviolet light beforehand, take it next to the cake, and turn off the lights to complete the surprise! Glasses containing fluorite will become a conversation starter and will be an item that will liven up the party even more. ][To make the surprise a success... Try experimenting at the same time as the party! The darker the surroundings, the more beautifully it will glow. ]
[Q&A... Q. I left it in the sun for several days, but it doesn't glow at all! A. When it stops absorbing ultraviolet rays, the accumulated ultraviolet rays are released. Release begins at sunset, so the accumulated ultraviolet rays are reset the next day. If you leave it in the sun and then take it to a completely dark room, it will glow beautifully. *Please try this in a room with blackout curtains, etc. ][Q. The product arrived, but it's not glowing. A. When delivered, the product is inside a cardboard box, so ultraviolet rays have not accumulated. Try placing it under a desk lamp for a few minutes and then in a dark place. ][Q. It doesn't glow as beautifully as in the picture. A. The fluorite was photographed in a completely dark environment with all windows covered by blackout curtains and all fluorescent lights turned off. If you create a similar environment, it will glow as beautifully as in the picture. About our glass products... All the glass products we carry are handcrafted one by one by skilled artisans. No two pieces are exactly alike in color or pattern; each has its own unique character. Please understand that this is part of the charm of handmade products. Please enjoy the handmade charm created by our skilled glass artisans.
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