These are the Octa earrings.
They come in brushed sterling silver and measure about 1.5cm (0.75'') across.
They have a silver post and backing
Allergies? Ask about custom metals.
'Oxidizing' is a semi-permanent finish, often deep charcoal/black in colour. The deepest of charcoal/black is the colour we try to achieve, however, the results can be lighter. The finish is semi-permanent, so as time goes on, the oxidation will lighten.
Avoid direct contact with body cream, fragrance, and avoid wearing your jewellery in the shower.