Spike Blue Colored Ferrofluid in a Bottle Magnetic Liquid Sculpture Educational Display Executive Desk Toy

This is a really cool conversation piece, and just plain fun. It's built well and the magnet is high quality, it just works and it's very interesting to see how the ferrofluid reacts to the magnet. It's a bit pricey, but for the quality, it's probably worth it. Recommended.

Works great and there is a decent amount of fluid included. Have not noticed any staining from the blue dye. Nice presentation too

Really cool product. However, won't give 5 stars due to staining of parts of the glass interior from the oil and the liquid seems to be yellowish rather than clear. The magnet is top notch. Overall a very solid product. Interior magnet could be a bit stronger.

A bit pricey but it looks super cool and is a good size for a desk.

Arrived fast, well packaged, and undamaged. It's a fairly small jar so be aware of the item dimensions.It does come with a magnet to manipulate the ferro fluid but be aware, the base of the jar has one as well. This means only 50% of venom (movie reference) moves when toyed with by the magnet. It is intriguing and cool to watch / do for a minute or 3. After that, it's all the same again and again.I have a coworker who's ocd as f and probably on the spectrum. She has played with it for hours and I think this is a discreet fidget toy.Fluid is just a lil cloudy. I like it ,but it's a bit pricey. I think a -$20 price point would be more reasonable.

That was how my son described it. I purchased this for him for his birthday and he loved it. BTW my son is 33 and it sits on his desk at work.

product costs a decent price to suggest a decent level of quality. glued together crooked with stains on the inside because the Ferro whatever is stuck to the wall . would recommend purchasing something half the price or finding something better.

I got this for my husband as an ADD fidget toy. He plays with it daily. Expensive but very cool effect