Need Help with Hallmark & "Stone" ID

[trdhrdr007]

Picked up this necklace in a lot at an estate sale a couple weeks ago. It's not much larger than choker length. The clear "stones" are cool to the touch. All of those are smooth, some are faceted, & some have flaws. The fish hook clasp is hallmarked as shown & tests for 14k. Any info as to maker or "stone" id would be helpful.

 

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[SCpicker]

Not sure of the maker but the clear stones are more than likely colorless quartz. Aka rock crystal.