Blank Sea Shells Single or Pair, Cast Resin Clam Shell Seashell Prop, Half Shell Prop, Lightweight Mermaid Shells, Costume Mermaid Bikini
Star Seller
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Item highlights
Seller's description
These decorative sea shells are made from lightweight cast resin and would make the perfect props for your mermaid or other oceangoing creature costume! They may be attached to a mermaid bikini top, strung as part of a fancy sea-themed belt, attached as decoration on a mighty trident prop, or anything else you can imagine. They'd also make a lovely Camino de Santiago pilgrim keepsake.
You can choose between two sizes for these shells: 4.5" diameter (about 1.25" depth) and 5.5" diameter (about 2" depth). The shape is slightly different for each size, as you can see in the photographs.
Choose the option to buy two shells together for a discount per shell.
These shells may be worn in the water. (Please note, however, that the resin they are made from is NOT rated aquarium safe so they shouldn't be used as aquarium props.)
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CAST OPTIONS
You can choose from these options for the cast piece(s):
- Raw cast vs cleaned-up: A raw cast is straight out of the mold with minimal cleanup. There will be some flashing and the edges may be sharp. A raw cast will require you to do some sanding and cleanup before use. You can also choose the cleaned-up option, where we take care of removing all of the flashing and sanding the edges clean and smooth.
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This is a made-to-order piece, meaning that once I receive your order, you are added to my casting queue. The processing time (before shipping) for this item is 1-2 weeks.
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All of my resin props start out as a sculpture I created in oil-based clay. These shells have a lot of ridges and detail on the surface! I make a mold of the original using silicone rubber, and then cast it in impact-resistant resin. While I don't recommend treating it roughly, this stuff is very tough!
This blank prop comes just as you see it in the photos - a blank piece cast in resin. If you choose the cleanup option, I also remove any flashing from the molding process and sand the edges smooth. This is a do-it-yourself piece, meaning it's up to you to finish, paint, and assemble it however you'd like. I'm also available to answer questions, so please don't hesitate to send me a message.
Item review
All reviews are from verified buyers. This review is shown automatically based on factors like recency, whether it includes comments, your chosen language, and whether the rating reflects the typical experience with the shop.
Summarized by AI
“Really nicely done shells! I'm painting them and making a mermaid shell bra out of them :)”
Willow
Oct 26, 2025
Only 4 left and in 1 cart
Price:$17.60+
You can only make an offer when buying a single item
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ReturnsAccepted within 30 days
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
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Cost to ship$7.17 to United States, 43215.
Reviews for this item
What buyers say, summarized by AI: Looks great Great quality Love it Well packaged Clear instructions Fast shipping
These are SUCH high quality. The etching in them give it a perfect seashell look. Also very helpfully included was information on how to paint the prop. 10/10 this will be perfect for my dark siren costume!
Really nicely done shells! I'm painting them and making a mermaid shell bra out of them :)
High quality, worth getting the smooth version — that will make it easier to craft with. Just amazing! Thank you so much.
I love these shells! I've been making a pair of clamshell covered swimmable headphones for my mermaiding adventures. These shells were easy to shape with a heat gun, and they're the perfect size!
Photos from reviews
Seller's description
Specifications
These decorative sea shells are made from lightweight cast resin and would make the perfect props for your mermaid or other oceangoing creature costume! They may be attached to a mermaid bikini top, strung as part of a fancy sea-themed belt, attached as decoration on a mighty trident prop, or anything else you can imagine. They'd also make a lovely Camino de Santiago pilgrim keepsake.
You can choose between two sizes for these shells: 4.5" diameter (about 1.25" depth) and 5.5" diameter (about 2" depth). The shape is slightly different for each size, as you can see in the photographs.
Choose the option to buy two shells together for a discount per shell.
These shells may be worn in the water. (Please note, however, that the resin they are made from is NOT rated aquarium safe so they shouldn't be used as aquarium props.)
* * * * * * * * * * * * * *
CAST OPTIONS
You can choose from these options for the cast piece(s):
- Raw cast vs cleaned-up: A raw cast is straight out of the mold with minimal cleanup. There will be some flashing and the edges may be sharp. A raw cast will require you to do some sanding and cleanup before use. You can also choose the cleaned-up option, where we take care of removing all of the flashing and sanding the edges clean and smooth.
* * * * * * * * * * * * * *
This is a made-to-order piece, meaning that once I receive your order, you are added to my casting queue. The processing time (before shipping) for this item is 1-2 weeks.
* * * * * * * * * * * * * *
All of my resin props start out as a sculpture I created in oil-based clay. These shells have a lot of ridges and detail on the surface! I make a mold of the original using silicone rubber, and then cast it in impact-resistant resin. While I don't recommend treating it roughly, this stuff is very tough!
This blank prop comes just as you see it in the photos - a blank piece cast in resin. If you choose the cleanup option, I also remove any flashing from the molding process and sand the edges smooth. This is a do-it-yourself piece, meaning it's up to you to finish, paint, and assemble it however you'd like. I'm also available to answer questions, so please don't hesitate to send me a message.
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Made by
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MaterialsImpact resistant urethane resin, Please read Item Details for full description
Delivery details and policies
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Get it byNov 4-16
Your order should arrive by this date if you buy today. To calculate an estimated delivery date you can count on, we look at things like the carrier's latest transit times, the seller's processing time and shipping history, and where the order is shipping to and from.
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Return policyAccepted within 30 days.
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Ships fromMaricopa, AZ
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Cost to ship$7.17 to United States, 43215
There was a problem calculating your shipping. Please try again.
This seller consistently earned 5-star reviews, shipped orders on time, and replied quickly to messages.
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Rave reviews Average review rating is 4.8 or higher.
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