Platinum Diamond Opal Festoon

​​Platinum festoon style necklace with 2.5 ct diamonds and 2.25 ct pear shaped opal drop. There are 70 singe cut diamonds and 15 old European cut diamonds.
The necklace measures  42.5 cm (16.75") long.
The length of the festoon is 96 mm
The height of the festoon is 17.5 mm
The opal drop measures is 14 x 8mm
The overall drop at center is 35 mm
The total weigh of necklace is 0.567 Oz (16.07 g)