I am not yet totaly convinced as to what the origins of this necklace are. We realy need good HQ pictures for that.
But it's as if I see: 1) blue stones (saphires?) 2) whitish stones (moonstone?) 3) greyish/rose pearls
They became awful friendly with some of the worlds oilsheiks, maybe a gift indeed. Quatar, Brunei, Oman, Emirates ???
You do know that when ever a woman baptises a ship she is given a piece of jewelery by the owner?
Besides that there are all sorts of phantasie-necklaces on the market with precious or semi-precious stones. Not all of them are thát expensive, depends a lot (f.e. brand or brandless and country of origine).