Ring at paltinium, pearl and diamonds

Ring in paltinium (hallmark: dog's head), with a central untreated sea water cultured pearl (diameter 9.9 mm to 10.1 mm), set in a shoulder of diamonds The total weight is estimated at approximately 0.40 carat (color estimated G, purity estimated VS). French work, Art Deco, Circa 1930. Condition: very slight micro-scratches on the gold and silver parts. paltinium, slight abrasions on the diamonds, natural inclusions in the diamonds.