Sumiko RS Black Pearl Replacement Stylus for Sumiko Black Pearl Sumiko Oyster Black Pearl Replacement Stylus Sumiko Oyster Black Pearl Replacement Stylus are products resulting from over 30 years of turntable cartridge engineering. We believe that delivered high performance can be achieved at reasonable prices. The Oyster Black Pearl is the embodiment of this ideaology. The Black Pearl replacement is a bonded sperical stylus.