Help to decipher Chinese silver marks please

Silver ring with 375 gold accents on the prongs. Do these marks tell me anything other than the metal purity?
Is one a date or makers mark?
I have googled and got bogged down in pages of conflicting information!.
It doesn’t look particularly well made- black marks that don’t seem to want to polish off although I haven’t tried hard yet. Unsure what the stone is but not glass.
I don’t want to scrap without knowing more about it but is there a scrap value when a small amount of gold gold is mixed with silver or not?.
375 mark looks like a Swallow
925 is a birds head and jellyfish like Chinese characters!
Thankyou for looking

 

https://www.925-1000.com/Fportugal.html

 

Thankyou both! So I was was off with Chinese anyway. Any ideas about the Jellyfish looking stamp? . Off to Google.....

 

So the Swallow and birds head are for Porto 1985-2015.
What I can’t see is - are these marks likely applied to a Chinese ring stamped on import?

 

What does Mary Contrary say about the stone? Do you see a lot of color in it when you hold it in sunlight?

 

I don't see any Chinese characters or a jellyfish. Are you talking about the punch between the 2 Portuguese? Looks like 2 pointy topped mountains or buildings?

 

Yes, the centre stamp. Your description is far more eloquent!

 

She says Goshenite ( is that CZ? ) or tourmaline but although it was nice if her to narrow it down to two she is usually pretty vague!
Sunlight?!. Nothing but pouring rain, dark skies and wind for days now. It is very sparkly though.

 

Goshenite is beryl

 

I have found CZs test in a variety of ranges based on their quality. Low quality can test as glass, I had a high quality CZ that teated as topaz. This may be a piece you have to have a jeweler test if you want an answer.

 

I don't see a Chinese mark either. Looks like a maker's mark.
Not sure Macao would have used Portuguese marks anyway, our colonies never used Dutch marks.