AMETHYST, AQUAMARINE, COPPER, GOLD, QUARTZ, SELENITE, SILVER,ZEOLITES, AND MANY RARE MINERALS, SUCH AS BROOKITE & BIXBYITE. STRICTLY MINERALS HAS EXCELLENT SPECIMENS FROM ALL OVER THE WORLD. ALL OF OUR MATERIAL IS HAND PICKED FOR QUALITY AND THE BEST POSSIBLE DISPLAY APPEARANCE. YOU WILL FIND THAT OUR PRICING IS VERY COMPETITIVE, IF NOT LOWER THAN SIMILIAR SPECIMENS. PLEASE ASK FOR ADDITIONAL VIEWS AND PHOTOS OF ANY OF OUR SPECIMENS OR PRODUCTS (JUST E-MAIL US). WE WANT YOU TO KNOW EXACTLY WHAT YOU ARE BUYING SO THAT YOU WILL BE EXCITED AND PLEASED ABOUT ANY PURCHASE.