
I’m sure many people out there have been fascinated by the beauty of crystals. Crystals come in various shapes and colors and can be used in many ways, including ornaments and jewelry. Well, if you love crystals, there is reason for you to rejoice, because now you can grow your own crystals with “Magic Crystal“, the new product from Otogino Co., Ltd.
The Magic Crystal kit includes the following items:
1)Special container with lid
2)Crystal powder
3)Crystal seeds
4)Plaster base
5)Stirring rod
6)Plastic gloves
7)Instruction sheet
The crystal powder and crystal seeds contain monoammonium phosphate as the active ingredient. You add the crystal powder to hot water, then add the plaster base and crystal seeds once the water has cooled to room temperature. You then keep the container closed with the lid for 24 hours, and after that you remove the lid and wait for about 10 days – and voila, you have your own batch of fresh grown crystals!
You can choose from a selection of 6 colors – purple, blue, green, orange yellow and red, and the final color and shape of the crystal will vary depending on environmental conditions, so you won’t know what your crystal will look like until it’s complete. According to the Otogino staff involved in developing the product, crystals grow only about 1mm (about 1/25th of an inch) every 100 years in nature, so it really is fascinating to see a large crystal grow in only 10 days.
The kit is available from the Otogino shopping site on Rakuten for a price of 680yen (approximately $8.50). It may be a fun project for parents and children to enjoy together!
Sources: Walkerplus.com (Japanese)
Magic Crystal official site (Japanese)
The Magic Crystal kit box






Fun Do-It-Yourself Mini Cherry Blossom Kit
We made magical crystal chocolate tarts, fit for a mage with a sweet tooth! 【Sora Kitchen】
How to make your own moving conveyor belt sushi shop at home
Oh shiitake! How to grow your own with Japan’s super-easy mushroom cultivation kit【Photos】
U can haz Pokénoms! A how-to guide to cooking your own Pokémon pancakes
Japan’s newest Shinkansen has no seats…or passengers [Video]
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Paying for prostitution isn’t illegal in Japan, but it could be soon
Our reporter is willing to die on the pseudo-Italian restaurant Olive Hill
Downloads of 39-year-old Guns N’ Roses song increase 12,166 percent thanks to Gundam
Man in Japan takes four parakeets hostage in attempt to force woman to meet with him
Man arrested in Japan after leaving car in coin parking lot for six years, racking up three-million-yen bill
This gachapon capsule machine dispenses real Akoya pearls, with certificates of authenticity
Testing Japan’s fluffy mayonnaise pancake cooking hack【SoraKitchen】
Ghost in the Sheel goes traditional with Japanese porcelain Tachikoma robots, only 50 to be made
Is China’s don’t-go-to-Japan warning affecting the lines at a popular Tokyo gyukatsu restaurant?
Three beautiful places to see Japan’s plum blossoms after starting your day in downtown Tokyo
A look back on 40 years of Japanese schools banning stuff
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Huge Evangelion Unit-01 head appearing in lights in Japan to celebrate anime’s 30th anniversary
New Family Mart cinema opens inside Japanese airport
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Japan releases first official sakura cherry blossom forecast for 2026
Archfiend Hello Kitty appears as Sanrio launches new team-up with Yu-Gi-Oh【Pics】
China’s don’t-go-to-Japan warning looks to be affecting tourist crowds on Miyajima
Studio Ghibli releases new “komorebi” plush toys from Princess Mononoke and Spirited Away
Yokai are descending upon Tokyo this spring in the latest immersive art experience
Japan’s Naruto theme park now offering real-world version of Minato’s kunai ninja weapon
New Studio Ghibli stamps leave an impression on your stationery…and your heart
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Leave a Reply