Knobby Cerithium Seashells (Cerithium nodulosum) - 2+ Inch Black & White Bumpy Horn Snails
Dramatic Knobby Zebra Ceriths – Perfect for Collecting, Jewelry & Coastal Crafts
$3.00
1 shells per pack
Size: 6-11 cm (2.4-4.3 inches) – impressive large knobby size
Origin: Indo-Pacific waters – from clean rocky shores
Features: Thick, glossy jet-black shells covered in bold raised white knobs and spiral ridges; ultra-textured “knobby” cerith with high-contrast zebra pattern; commercial-grade clean and one of the most striking ceriths available – ideal for bold necklaces, wind chimes, shadow boxes, or dramatic nautical displays.
Each shell is naturally unique with slight knob size and placement variation that adds rugged beauty. Photos show exact quality you’ll receive – deep black & crisp white, odor-free, ready to craft.
We ship worldwide with secure, protective packaging and reliable tracking for safe delivery. Easy returns available (refund or credit at our discretion).
Bulk & Wholesale: Need dozens or kilos? Email cyan@seashell-supply.com for the best pricing on 50+, 100+, or bulk lots.
Every seashell is a gift from the ocean, and I pack each one with the care it deserves, ensuring its safe journey to you.
Preparation Time: I will carefully wrap your seashells in recycled paper and twine within 1-3 business days, making it feel like a personal gift from the sea.
Shipping Method: I use reliable standard shipping and will provide you with a tracking number, so you can follow your shell’s journey.
International Orders: For shells traveling across oceans, please allow a little extra time. Sometimes customs checks can extend their journey.
The ocean never creates two identical shells, making the one you receive truly one-of-a-kind.
Damaged in Transit: If your shell is damaged during its journey, please contact me within 24 hours of receipt with a photo. I will immediately send a replacement or issue a full refund.
Not as Described: I do my best to represent each shell accurately through photos and descriptions. If you feel your shell is significantly different from what was described, please contact me within 7 days, and we will find a thoughtful solution.
A Note on “Change of Mind”: As each shell is a natural, unique item, I cannot accept returns or exchanges due to a “change of mind.” Please review the photos and dimensions carefully to ensure it’s the perfect “ocean companion” for you.
We are deeply committed to sustainable and ethical practices. All our shells are sourced responsibly—never from live-shelled creatures. We support marine conservation efforts and maintain transparency about our sourcing practices.
The raised white knobs act like armor and help camouflage on rough rocky shores.
One of the toughest ceriths – drill, wire, or glue without worry.
Instant wow-factor for boho necklaces and monochrome beach decor!