Silicate garden formations, how to stabilize in air?

Question

Example http://www.emsb.qc.ca/laurenhill/science/silicate.html
When some formations are removed from solution and dried, micro fractures form with disintegration.

I tried adding potassium sulfate to the silicate solution, then using calcium chloride "seeds".
Growths are alot stronger due to calcium sulfate?
Adding sodium carbonate/phosphate/hydroxide may help with other metal salts.

Answer 1

They are too fragile...if you want to try to save them try a liquid plastic resin that is clear and will harden around them