NWOT vintage Brass & turquoise bracelet bangle

NWOT vintage Brass & turquoise bracelet bangle Beautiful metalwork is probably handmade in India. Not sure if it’s brass or coloured metal: textured-engraved, medium weight, feels solid. Clip closure and chain. Blue green stones (?) on metal filigree or cloisonné like frames: circle, cross, diamond. Note: one tiny stone is missing on one of the crosses. Vintage c 1970s.