How to make your own Sea Glass

How to make your own sea glassWhen I was younger, I remember that one of my favorite things to do at the beach was to find sea glass.  If you aren’t familiar with sea glass, it’s where broken bottles and glass jars make their way into the ocean.  After weeks to months of tumbling in the water and sand, they come back to shore with a beautiful, evenly frosted finish.  I remember collecting jars of the stuff!

Today, I’m going to show you how to make your own sea glass with resin!

Resin supplies:



Spray the mold with the Castin’ Craft mold release and conditioner and leave to dry for a couple of hours.

spray mold release


Measure your resin into a mixing cup according to the directions.  Mix well and leave to stand for a couple of minutes.

If you haven’t done this before, learn how to mix resin and hardener in five easy steps.

measure resin


Drop a small amount of transparent pigment to the mix until it is the color you want. Add just a pinch of white glitter and mix well – this is the secret to the realism!

add dye to resin


Pour the mixture into the mold until half-full and leave to partially set. I left mine inside of a hot box under a light bulb to speed up curing, but you can let it set in a normal environment.  This explains at what temperature you should be mixing your resin.

This mold is best because it gives nice sized pieces to work with.

pour resin in mold


The resin is ready to be manipulated when the surface is no longer wet, but the mixture is still very soft when pushing on the underside of the mold. Keep an eye on the curing as different room temperatures and situations change the speed that it takes to get to this stage. Pull the resin out of the mold with a blunt object (you can use the StirStix so as not to damage your mold), any extra bits left inside can be picked off once fully cured.

remove from mold while soft


Tear the resin into pieces if you want smaller pieces, or for a decent-sized pendant leave the blob whole. Shape roughly with your hands and put on a non-stick mat. Don’t worry about fingerprints, this will slightly frost the surface which is a good thing, and most will be lost once fully cured as it does smooth out a bit more after this stage.

tear resin


Use a rolling pin to lightly squish the piece on the drying mat into a flatter shape so as to mimic the thickness of old glass.

Note:  Once food items are used for resin, they should not be used for food again.

flatten resin


Leave to set in a cool environment for at least 4-5 hours. Then you are free to drill the resin charms and do as you wish with your faux sea glass!

let resin cure on drying mat

Ready to try making your own jewelry with resin but hesitant to get started?  I get it.  Who wants to spend an afternoon making something only to find it’s something you wouldn’t show anyone!  It’s why I wrote the PDF ebook, Resin Jewelry Making.  I help beginners get started with the simple, but essential steps they need to make something that they can’t wait to show off.  Buy now and it arrives in your inbox in minutes!

Unpublished Blog Posts of Resin Obsession, LLC © 2020 Resin Obsession, LLC

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16 thoughts on “How to make your own Sea Glass

  1. This is really cool. I’m been seeing a lot of designs made with sea glass lately, but I have yet to find any. Thank you for sharing your tutorial.
    Linda @

  2. I love your work!I saw this ring and know that they use resin. Now i wonder how they did this. Can you explain that to me? The hardest thing is that the resin is on the outside of the ring.I hope to hear from you. By the way, sorry for my Englisch, a’m dutch 😉

  3. @Ellen,
    Unfortunately, it’s hard for me to know how this was done without seeing the original ring.

  4. Katherine,
    I’d love to try this but I’d be using a different brand of epoxy resin, which is what I have at this time. Should I assume the instructions would be the same? The one place I’m getting a bit stuck on understanding is when you say “The resin is ready to be manipulated when the surface is no longer wet, but the mixture is still very soft when pushing on the underside of the mold.” I’m still pretty new to all this – do you mean when the surface is not sticky to the touch? I appreciate all your information! Thanks!

    1. Yes, you got it! This technique will work with a different brand of resin, although the time that it’s rubbery will be different than what is talked about here.

  5. This looks really neat. Instructions say specific amounts but does not give amounts. Can you help me in that area?

  6. I sent an email on your forum – but I’m using a complex mold ( mermaid with detail hair and face). I want a sea glass look. For a silicon mold do I need a releasing agent

  7. @Ellen
    I was reading up on making seagrass & saw your post from 2014! My response is off subject, but at the end, you apologize for you English, as you are Dutch. (Lucky You! I’ve always wanted to explore your area of our world since I was little!)so this comment made me laugh a bit….a lot, bc your msg was perfect English. If you read other comments on most sites, esp news, you’ll notice immediately that we Americans are the worst when it comes to our own native tongue! It’s embarrassing! English & grammar no longer taught in schools for past ~15yrs! No wonder the rest of the world laugh & think we are a bunch of uneducated, ignorant bunch of people. Sadly, that is a fact for way too many Americans. Students aren’t even expected to ‘read a book’ during schooling! A Book!! I could go on & on, I won’t but thought it would be fun to write to you!!
    Happy Day to You!
    Sally S. Hale•Louisville, Kentucky. ,

  8. Sally, I am not sure where you live here in the states but most schools still teach grammar and English. All my kids from grades k-9th are made to read chapter books every quarter. I know this has nothing to do with making sea glass (which I will one day) but it blew my mind when you wrote this. My kids are even still taught cursive which was taken out of the school system. But most teachers know the importance of it and still do teach it. So sad to hear where you come from this isn’t an option.

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