This spectacular chunk of rough material is from the Ray Mine near Hayden, Arizona. This stunning piece measures approximately 4.25 Inches x 2.0 Inches x 1.5 Inches. This huge specimen weighs a total 13.9 Ounces or 394 Grams. This material is truly spectacular, this piece came from a very old collection and features pockets of stunning deep ocean-blue gem silica, bursts of black-tenorite, pockets of druzy quartz over gem silica, and large swirls of chrysocolla. This piece has amazing potential for cabochons, it also would make an incredibly addition to any mineral collection. Feel free to contact us with any questions you may have or if you would like additional photographs.