Intriguing. To my eyes the necklace seems a bit longer now than previously. I might very well be wrong of course. And also there is something odd about the number of diamonds between the suspension hooks. Counting from the first pearl pendant in the photo where the necklace is placed on a red cushion there are two diamonds before the next pendant. Then two more diamonds before the second pearl (being the centre of the necklace). Then just one diamond till the next pendant. And again two diamonds before the last pendant pearl. But looking at the more recent photo of it when it is worn the first suspension hook seems to have disappeared. Then between the first hook that can be seen and the centre pendant there are two diamonds. Then one diamond before the next suspension hook and then two before the last hook. So something could have been done to the necklace at some point.
Previous Message
Interesting that it is lob sided. On the left there are two collets between pendant suspension hooks but on the right there is only one. It is clearer when it has the diamond earrings and pear pearls attached.
http://www.dianasjewels.net/diamondnecklaces.htm