Identify artist N G on sterling turquoise (+ opal?) jewellery?

Can anyone identify the artist? or give any info about him/her or the jewellery pictured? Navajo?
Don’t know how well it shows in the pictures, but the main stones in the pendant and the earrings have an opalescence to them while the trim at the bottom is more of a flat turquoise. If they are opals, would they be foil backed? One earring has NG on the back; the other just STERLING

<img src=/uploads/db1846/original/2X/9/998224682fe1e4ab551798e2d613f1c6958bd1a0.jpg">

<img src=/uploads/db1846/original/2X/0/0c172a19ec81442c0371ce2379e9ec8dac66a2dd.jpg">

<img src=/uploads/db1846/original/2X/a/a70d5549521e8e484be070e8ce95e660c56dff17.jpg">

<img src=/uploads/db1846/original/2X/e/efc68e9b613ec8ceffe8555f5ad2a1b4e1495059.jpg">

Hi, not an expert by any means, just started collecting myself, but this site has a lot of good Native American hallmark info.:

There is an NG listed, Nelson Garcia of Santo Domingo Pueblo, but his mark has a triangle shaped picto above the initials, unlike yours, so I’m not sure if it’s the same artist or not. Hopefully someone who knows more will have more information for you. :slight_smile:

The opalescent stones look like opals to me, possibly man made Gilson opals, I’ve seen them in NA inlay jewelry. Very pretty earrings. :slight_smile:

Best wishes,