I continue to dig this ongoing feature. Didn't even know there was such a beast as a black sapphire.
These are great, and incredibly useful.
As always, thanks for this series! :)
Thanks so much for this series. I've used this info to create a little application that takes a value and a quantity of gems, and then spits out a treasure list, complete with variances for quality. Will try to post a link if I ever get it presentable.