Perhaps you will end up singing “cockles and mussels" on an abandoned beach?
The Ondine collection makes up a high-end capsule within the Louise Damas collections. The signet ring is in vermeil (24k gold-plated 925 silver).
Unlike brass gilded with fine gold, water does not harm vermeil. To care for your jewelry, never wash it with chemical products. Just rub it with a soft cloth and a bit of talcum powder.