Art Deco 9ct Gold Blue Zircon White Sapphire Natural Pearl Necklace 1920s

Art Deco 9ct Gold Old Cut Blue Zircon and White Sapphire Cultured/Natural Pearl Necklace dating to the 1920s.
 
The necklace clasp is marked 9ct for solid 9ct gold.
 It is set with a beautiful old cut blue zircon to the clasp of (approx) 85 points and surrounding beautiful sparkly old cut 3 point white sapphires.
The pearls are a beautiful light cream luster that are at least cultured and possibly natural given their shape and luster the pearls are very light and are a beautiful shape, well matched in size and colour, graduating pearl necklace.  
 
The clasp measures 1.1cm x 1.1cm, the necklace measures 46cm in length, it weighs 20 grams heavy. 
 
Excellent antique condition, light wear to the Zircon, to be expceted with age.