Doc Johnson Black Rose Violet Gems Wand. Explore your sensual side with this luxurious gem! Made of gorgeous black borosilicate glass, featuring a glistening violet gem at the base, this uniquely designed 8 inches glass wand is perfect for warm or cool temperature playtime! Phthalate free. Body safe material. Unique wand plug size length 7.8 inches, usable length 7.3 inches, width 1.6 inches, circumference 5.02 inches.