Especially love the Fuschia colored Swarovski lead glass crystal in the front on your impressive Swarovski choker. (I don't know how many times I've typed the name but still have to check the spelling on this Jewelry manufacturing company)
There are a variety of Swarovski marks. The company, Swarovski as you might already know is an Austrian manufacturing Jewelry company established in Vienna Austria in 1895. Swarovski are the champions of luxury cut lead glass crystal. There are also variations of the modern Swarovksi Swan mark ca 1988 - Present.
Swarovski also have a division that manufacturers bonded abrasives and drilling machinery! Quite a departure from their fine glass crystal Jewelry!