<https://sciencenotes.org/how-to-grow-orange-potassium-dichromate-crystals/>
<http://schema.org/description>
"It's easy to grow potassium dichromate crystals. These crystals are naturally vivid orange to red, without the use of any dyes."
<https://sciencenotes.org/how-to-grow-orange-potassium-dichromate-crystals/>