Saint Petersburg, Leningradskaya Oblast, Russia A small cabinet specimen of man-made quartz with crystallographic notations, RHC7052, measuring 2 x 1 1/2 x 1 1/2 in; together with an elongated transparent man-made crystal, RHC1477, measuring 5 1/4 x 1/2 x 1/4 in; a large double-terminated crystal, RHC8345, 445 grams, measuring 2 3/4 x 2 1/4 x 2 1/4 in; a small specimen, RHC8349, 175 grams, measuring 1 3/4 x 1 3/4 x 1 1/2 in; and a smaller crystal, RHC40203, measuring 1 3/4 x 1 1/2 x 1 1/2 in; and a lab-grown quartz twin, a miniature, RHC9000. (6)