4M Crystal Growing Experimental Kit | A Science and Chemistry Kit for Kids Ages 14+ | Grow your own Crystals, Large

First thing read the instruction. These do work best when using freshly boiled water, distrurb as little as possible, don't keep in a room too hot (as UK had recently) or too cold (how UK is 50 weeks of the year) I did two of these kits and one during heat wave didn't work as well. The crystal climbers it's best to take out rather than push back in. Make sure u don't ignore them as I left for 2 hours and they took over in the heat. When the crystals are to size drain the liquid don't wait for all the liquid to evaporate. Wear gloves when handling the crystals. Work out what colours you want before you start as the seed crystals come with just enough so big crystal is one pack, so don't use all one colour of want different shades or colours than white, red and blue. Or as my first one white, red, blue, purple and one was red,blue and pink. It's a great kit to do with kids but maybe have adult mix, handle and display and let kids watch then grow and in display case ( maybe tape the case or could drop on floor and break (yes I dropped few b4 taped them)

Excellent. My grandson was delighted and is watching them grow.

I didn't have high expectations - but this crystallisation kit worked quite well in the end. Just follow the instructions and you can't go far wrong. It takes about a week before the crystals are large enough to be harvested. The larger pot takes a few days longer. The mix colour crystals gave nice results. Its a fun way to get kids interested in basic science. The age indication is for 14 & upwards, but I think this would be more more interesting for the 10-12 age group. Not a bad kit overall.

Grandchildren had awesome time growing these

I bought these for my daughter's 6th birthday but she finds them really boring and hard to engage with. I bought them in full knowledge that they were aimed at 8+, because many of the toys in this age bracket are pretty engaging for younger kids who enjoy science/ experiments - but these are just quite difficult to get excited about! The dyes are incredibly potent and I had to do most of the work so she didn't destroy our kitchen - the instructions are explicit about this but it does mean they aren't suitable for anyone with less than perfect/ mature motor skills. The crystals themselves grew as expected but she wasn't that fussed about them. I am sure they are a great product for older kids and those interested in very specific sorts of chemical experiments but I would advise taking note of the recommended age.

Quick delivery. My Grandson loves this crystal growing kit.

Extremely happy - instructions are clear and it is so fun to see crystal growing ! Great science fun of you and your kid !

I got these as a present for a friend's daughter and she loved them. The crystals turned out really great from the images too ☺️

Toen het pakket binnen kwam, viel op dat de data op de zakjes bijna allemaal een jaar oud waren. We wisten dus niet of het zou werken. Instructies exact opgevolgd, zelfs met een digitale thermometer. Uiteindelijk de bakjes laten rusten op een stuk karton, bovenop een radiator (niet te heet). Na 3-4 dagen een mooi resultaat (zie foto's). Sommige kristallen voorzichtig met een pincet eruit gehaald, om breken te voorkomen.

The crystals were a great success! The instructions are a little confusing but we made large, impressive crystals, despite making a mistake. The warnings are scary but it is good to see the product manufacturers take potential hazards seriously. The age range is appropriate but I would still suggest adult supervision.

Nice activity for kids. Worth buying.

This is a awesome product...these grew very nice a good size in only 7 days sitting by the TV. In the light not a lot of heat as it is winter and we are electric heat🤔. These are medium. They had a lot of growth crawling up the sides, the white rings did not help that fact. Do not break the growth off the edges on to the growing crystal. It just builds up and takes from the beauty. I did and had to clean it all out of the blue one with a toothpick. They are pretty with the sun shining on them. Do not dump the juice from these down the drain. Soak it up in paper towel bag it and toss it in the garbage. It will continue to grow in the dark in your drain. I read that in another review. I do recommend...

Works !!! I have actually have crystals the seeds are not enough or I would have given It full star