2 possible issues.
1) you had water in your jar and what you were seeing were ice crystals
2) (more likely) you had a small amount of naphtha still left with your crystals, as the naphtha warmed up your spice redissolved into the small puddle of naphtha (this is the more likely senerio).
The way I always get my xtals out of the naphtha is as follows:
I freeze in a 1/2 pint mason jar with a lid on
I use a second mason jar to pour the naphtha out of the first jar. If you kind of turn your jar as you pour out the naphtha the loose crystals will stick to the side and none will go into the second jar.
Once all the naphtha is out of the jar I will turn it upside down...the somewhat wet crystals will stick to the jar and won't fall out. Let the jar sit upside down for a minute or two.
I've never had my xtals melt after doing it this way.
The Spice extends life
The Spice expands consciousness
The Spice is vital for space travel
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