Thierry BONTRIDDER* (1956) - Wavre, Belgium Voluminous ring in the form of a cabochon in a raised arc of transparent acrylic glass ranging from pale blue to royal blue, passing through green and black. Signed with the Belgian artist's monogram and dated. Created in 1991. Tray size: 6.5 x 2 x 2 cm. Finger size: 53 Gross weight: 26.7 g.