Blue MarbleNational Geographic Jumbo Crystal Growing Kit - Grow Your Own Giant Glow in The Dark Crystal in a Few Days, Science Kit, Grow Crystals for Kids, STEM Toys (Amazon Exclusive)

I bought this as a gift for my nephew's daughter. They had a great time growing the crystals and the end result was Beautiful. It's a great family project. Try it with your kids. It takes time for the crystals to grow but you'll have fun and be so proud in the end. The light up base makes a really nice display.

Overall, good kit. Its crystals, you grow them, mission accomplished.Could of things to point out:1) There are three crystal powders. Each one is a different crystal type. They will not look the same by way of color or structure. I know this because I ordered two kits and each of the purples was one type of Crystal. The blues were another type of Crystal and the greens were yet another type of Crystal. This is important because if you're trying to grow an apples to apples comparison with all three crystals, you will not get it. It's not a terrifically bad thing as long as you know this going into it.2) There is only one grow cup. We ended up buying silicone cups of an appropriate size from Amazon so we could grow all three at the same time. We were doing a science fair project for growth. If we couldn't grow them all at the same time, it would have taken us three times as long (a week each). If you're on a time crunch, that's not good. It's not a bad thing since it only shows one cup in the description pictures, but you may not think of the time crunch aspect when you order yours.In conclusion, it does what it says it's gonna do: give you the sets of crystals.

Our six-year-old grandson had fun watching the first crystal growing over the course of a month. Now he can enjoy two more before his illuminated garden is complete. This is an educational activity that is lots of fun, too!Since writing this review, my daughter informed me that the instructions say to boil a little over a cup of water so that you have 6.75 oz. to use, but it also said "fill to the line on the experiment cup"(which ends up being less than 6.75 oz). Therefore, the powder didn't fully dissolve and the crystal did not grow. So, with the second crystal, she filled the experiment cup a little past the line, using the full 6.75 ounces. That worked!

This is a fun way to teach science with the added bonus of a cute decoration after.

The media could not be loaded. The crystals grew and though they’re not perfect, we love them! We grew the purple one in the container it came with and the other two in glasses- so they’re a little different, and the video is day one after taking them out, cleaning them, and drying them. My daughter doesn’t want me to pull of the ‘tree’ part at the top of the blue and green one. I placed them in a warm garage and let them grow for about 14-21 days. The light holder is very nice! It changes colors and is very cool! This was a great value for the money as it kept us busy checking on them every few days and was so educational for my 9 year old daughter. She asked so many questions- most of which I had to google lol, so educational for all involved. We grew a large glow in the dark one as well, and some other ones from other companies and these turned out the best.

Really fun science activity! My 7 year old (and I - requires help with boiling water) created these three crystals! The lighted base makes a cool night light too! Perfect for your little scientist or rock lover.

Didn’t work right for me, I used a larger bowl and I can still see the seed rock. Not sure what happened.

Perfect gift for a curious child. Pic is after 10 days. Couldn't be happier with this purchase.