Minimal, sleek and curvaceous, the Cora Studs mimic the playful shape of an air bubble suspended just beneath the surface of the sea. Cora reflects light beautifully, bringing the perfect amount of attention to the feature presentation - You.
Rose gold plating, hypoallergenic posts
Hand-cast & polished forms
0.75" x 0.8"
Style: E255
Made with love in Toronto, Canada
▸ BIKO offers FREE standard shipping on all orders $150+ within North America. International customers can enjoy affordable International shipping options as well.
When you place your order, choose from a few shipping options. You'll see estimated delivery dates listed based on shipping option chosen. Once you place your order, you will receive a confirmation email to the email address you provide upon checkout.
For more information on shipping, please see here.
All BIKO jewelry is designed and made in our Toronto studio with love and care. Your satisfaction is very important to us. In the event you are not fully satisfied, please note the following:
Extended Holiday returns and exchanges will be accepted until January 15th, 2026. We accept returns and exchanges on full priced merchandise in its original unused condition, postmarked within 14 days of receiving shipment for refund or credit, less shipping costs. We do not accept returns after 14 days. Discounted items qualify for exchange or store credit only (excluding the welcome discount).
For more information on returns, please see here.
▸ At BIKO, every piece is designed to last — crafted with care, precision, and enduring quality. Our five-year warranty offers added assurance, so you can wear your jewelry with confidence every day. Visit our warranty page for more information.
For increased longevity, keep your jewelry clean and dry using a soft cloth. Avoid wearing your jewelry in the shower or during exercise, and wear after applying perfume or hairspray. Protect your piece from rain and humidity. When not wearing, be sure to store inside a jewelry box or soft jewelry pouch, such as the branded BIKO pouch provided.
All BIKO pieces are plated in 14k gold or rhodium, over brass. They do not tarnish or cause discolouration on the skin. All earring posts are surgical stainless steel, and hypo-allergenic. Wear your BIKO jewels often; love them always.
