Help with Art Noveau Ring & Pendant

[photoworks]

Anyone can shed light or value on these?

 

[PreRaphaelite]

Late Edwardian to early Art Deco, are they white gold or platinum?
Circa 1910 to 1929

More details please, was this an auction?

 

[photoworks]

Late Edwardian to early Art Deco, are they white gold or platinum?
Circa 1910 to 1929

More details please, was this an auction?

No...these are family heirloom.

 

[photoworks]

Late Edwardian to early Art Deco, are they white gold or platinum?
Circa 1910 to 1929

More details please, was this an auction?

I can't see any markings on the pendant... could it be that the markings were placed on the chain instead?

The ring has 750 stamped on the inner side, and a faint crest but worn out

 

[stracci2000]

These look Art Deco to me, 1920-30. Art Nouveau would have more curving, organic lines, where these are more geometric.
Anyway, the pendant seems to have rose cut stones. The sapphires may be simulated, as this was common practice at the time. I am assuming the rest are diamonds. 750 is the European mark for 18k.
You might be able to sell them online for maybe $300 each.

 

[Rubymal]

Yep, these speak art deco to me too. Both are very beautiful pieces!