You guess is as good as any ones. Candy bars? Jewels? What exactly is it in these photos? Are they even from this planet? Have a look and see if you can figure it out. The answer is below the last photo.
You can make similar stuff at home by simply mixing sugar/salt and water on a small tray and leaving it out in the sun.
If you want the hardcore version and don't mind sacrificing a pot you can also heat up a salt/water mixture (like when you cook pasta) until the water evaporates and it starts building a crystalline structure. It will smell like hell but looks really cool when the crystals start building.
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If you want the hardcore version and don't mind sacrificing a pot you can also heat up a salt/water mixture (like when you cook pasta) until the water evaporates and it starts building a crystalline structure. It will smell like hell but looks really cool when the crystals start building.