18K Gold Lapis Lazuli Black Onyx Mother of Pearl & Diamond Snake Necklace

Crafted in 18K yellow gold, necklace features an inlaid lapis lazuli, black onyx and mother-of-pearl hand carved oval pendant set with a diamond set snake on top, supported by a diamond set bail and a twenty four inch long mariner style chain.
26 Diamonds: 0.20ctw. Color: G-H, Clarity: VS1-SI1
Measurements:
Pendant:
Length: 42 mm (Including bail.)
Width: 23 mm
Chain:
Length: 24 inches
Width: 2 mm
Total weight of the necklace: 18 grams
Marked: 750 18K and the makers marks