Monart glass bowl in red and black with gold aventurine. Looking through Frank's site it looks like shape KB.
Measures 8 1/8" / 20.5 cm in diameter, height 4 1/4" / 11cm and weighs 1125 gm.
Frank please let me know if you would like any pictures which you are more than welcome to use.
I had to use flash with these pictures.