What is Hotaruishi (Firefly Stone)?
Hotaruishi absorbs light from sunlight and fluorescent lamp ultraviolet rays!
It releases the absorbed light in the dark!
Let's make Hotaruishi glow!
Place it as close as possible to a fluorescent lamp or desk lamp for about 10 minutes.
Turn off the lights and make the room completely dark, or take it into a completely dark room.
The Hotaruishi will glow beautifully.
Where Hotaruishi is often used:
Surprise additions to cakes at birthday parties, Christmas, Valentine's Day, White Day, anniversaries, and parties.
How to create a surprise:
Pour juice into a glass previously exposed to ultraviolet light and bring it next to the cake, then turn off the lights to complete the surprise.
The Hotaruishi-filled glass will be a talking point and enhance the party atmosphere.
To ensure a successful surprise:
Experiment at the same time of day 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 by the next day.
Expose it to sunlight and take it into a dark room to make it glow beautifully.
*Please try this in a room with blackout curtains, etc.
Q. The product arrived, but it doesn't glow.
A. Upon delivery, the product is inside a cardboard box, so it has not accumulated ultraviolet rays.
Expose it to a desk lamp for a few minutes and try it in a dark place.
Q. It doesn't glow as beautifully as in the picture.
A. The Hotaruishi photos are taken by blocking all light with blackout curtains, turning off all fluorescent lights, and creating a completely dark environment.
If you create a similar environment, it will glow as beautifully as in the picture.
About Glassware:
All the glassware we handle is finished one by one by artisans.
No two pieces are exactly alike in color or pattern, each having a different expression.
Please understand that this is the appeal of handmade products.
Please enjoy the taste of handmade products created by skilled glass artisans.
Precautions for Use:
This product is not made of heat-resistant or tempered glass.
Please do not use it in dishwashers, with hot water and alcohol, hot water, or microwaves.
Glassware can break due to sudden temperature changes.
Be careful not to cool or heat it suddenly.
・[Material: Soda Glass][Size: Height: Approximately 8.0cm, Mouth Diameter: Approximately 8.0cm, Bottom Width: Approximately 8.0cm][Weight: Approximately 380g][Capacity: Approximately 220ml (when full)][Manufacturing Method: Ryukyu Glass product made by blown glass method][Production Location: China (※Food inspection completed in Japan)]
・[What is Hotaruishi... Hotaruishi absorbs light from sunlight and fluorescent lamp ultraviolet rays! It releases the absorbed light in the dark!][Let's make Hotaruishi glow! ... Place it as close as possible to a fluorescent lamp or desk lamp for about 10 minutes! Turn off the lights and make the room completely dark, or take it into a completely dark room. The Hotaruishi will glow beautifully.]
・Glass products are handmade one by one. Size and weight may vary, and the listed values are averages. *Also, the product page photos are examples, and the color, air bubbles, and glow of the Hotaruishi will differ from piece to piece.
・[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 by the next day. Expose it to sunlight and take it into a dark room to make it glow beautifully. ※Please try this in a room with blackout curtains, etc.][Q. The product arrived, but it doesn't glow. A. Upon delivery, the product is inside a cardboard box, so it has not accumulated ultraviolet rays. Expose it to a desk lamp for a few minutes and try it in a dark place.][Q. It doesn't glow as beautifully as in the picture. A. The Hotaruishi photos are taken by blocking all light with blackout curtains, turning off all fluorescent lights, and creating a completely dark environment. If you create a similar environment, it will glow as beautifully as in the picture.]
・About Glassware... All the glassware we handle is finished one by one by artisans. No two pieces are exactly alike in color or pattern, each having a different expression. Please understand that this is the appeal of handmade products. Please enjoy the taste of handmade products created by skilled glass artisans.
・Precautions for Use... This product is not made of heat-resistant or tempered glass. Please do not use it in dishwashers, with hot water and alcohol, hot water, or microwaves. Glassware can break due to sudden temperature changes. Be careful not to cool or heat it suddenly.
【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device's requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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