Siebert Nastascio earrings?

[launcher123]

I was told that these earrings could be Navajo artist 'Siebert Nastascio'. My question is about the periods after each initial on these earrings? I found only one pair of earrings (Internet search) that show 'SN sterling' as Siebert Nastascio not "S.N. 925"  Would appreciate any help.

[crazypantspaige]

http://stores.fourcornersusaonline.com/sacred-white-buffalo-turquoise-stone-sterling-silver-cuff-bra...

There is a picture of a bracelet on the above site marked SN 925 just like your earrings.  Based on style, I think you are on the right track.