Agates and other Rocks of Scotland Nov 22, 2020 22:43:38 GMT -7 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by 1dave on Nov 22, 2020 22:43:38 GMT -7 www.mindat.org/article.php/2806/Hidden+Gems%3A+Scotland%27s+Agates+-+New+Exhibition+at+NMS+EdinburghYou can download two books on the subject.