Reservation - Platinum diamond necklace decorated with sapphires and rubies

The gemstones on this unique Art Deco necklace have the following proportions:

Baguette cut diamonds: 16x 0,13ct. = 2,08ct.

Simple 8/8 cut diamonds: 2x 0,04ct. = 0,08ct.

Round cut diamonds: 25x 0,01ct. + 27x 0,015ct. + 35x 0,02ct. + 32x 0,025ct. + 72x 0,03ct. + 8x 0,04ct. + 14x 0,05ct. + 10x 0,06ct. + 6x 0,07ct. + 12x 0,08ct. + 2x 0,09ct. + 6x 0,12ct. + 2x 0,15ct. + 2x 0,16ct. = 8,86ct.

Rubies: 2x 1,00ct. radiant cut + 2x 1,10ct. drop cut + 20x 0,025ct. baguette cut + 20x 0,16ct. round cut = 7,325ct.

Sapphires: 15x 0,025ct. baguette cut = 0,38ct.