I have never seen an amethyst scepter from Joplin, Missouri before, so I checked out mindat to learn more. No help. In fact, almost no quartz is listed on mindat from Joplin field, Missouri. Hmmm... a mystery! At any rate, it is a beautiful thing with an old label from Mineral Showcase, Stuart Price. The 112 on the label matches the 112 on the specimen. The luster and clarity of the amethyst head are fantastic. The piece looks for all the world like the amethyst scepters that came from Salem, CT so many years ago (but most of those were lose crystals). 3.3 x 3 x 3.5 cm.