Many thanks to Ida Meister's evocative review of Sunset Beach perfume on Fragrantica:

"It's spicily, soothingly narcotic in a delicate, refined manner – so I think of it as an elegant complex gourmand for adults. It is so comfortable to wear, yet never mundane: the flinty/metallic aspect of orris adds that silvery edge of mica in the sand, mirroring late afternoon light's reflection scattered upon the waves."