Jasper brooch series with gold nautical knots - G/91-92.93

Series of three jasper brooches (this one in green) mounted in gold with nautical knots. All unique pieces. ref. G/91 - (perhaps) "boatman's knot" - diameter cm. 3.5 /4 with gold x thickness 1/1.5 cm. ref. G/92 - "Savoy knot" - diameter cm. 3.5/3.7 x thickness cm. 1/1.5. ref. G/93 - red jasper - (perhaps) "daisy knot" - diameter cm. 3.5/4 x thickness cm. 1/1.5. The price indicated below is for each brooch.