Anyone know this maker? Cant seem to find it anywhere nor can i make out what it says exactly. Thank you

Dana ♥

The Centenary Diamond
#2
the 750 means it is 18kt gold.

i can't make out any of the characters in the photo, though, it is too blurry.

is that part of a bracelet clasp? or a stamp on the outer part of the ring shank?
 
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