Renal stones which are laminated and irregular in outline are
Calcium oxalate stones are laminated and irregular in shape and covered with sharp projections which cause bleeding. The surface of these stones are thus discoloured by altered blood- brown in colour- mulberry stones Reference : page 1296 Bailey and Love's sho practice of surgery 25th edition
Uric acid
Calcium oxalate
Struvite
Cystine
Urology