Naphtha is the easiest way to white crystals, but limonene needs no heating and does not present the same "petrochemical fumes" issues. Just food for thought

Congratulations on a successful extraction. Your crystals do look pretty.

Couple of things though:

1) How can you make assertions about level of purity, when a) you haven't actually measured it, and b) have never done any previous extractions to compare this one to?

2) You can't really make claims to a superior yield if you don't weigh out your end product. 500mgs from 100 grams of bark (which I understand is only a guess) is actually pretty substandard.

Congrats again, though. Sample and report back with findings!

the fact you did it yourself....Much respect!! and looks good.. Houston! one more space traveler for the ship...