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Diamond Shaped Wood and Mosaic Wall Art

I am proud to be a 3M-sponsored blogger, and as a part of my responsibilities, I get the opportunity to evaluate 3M products. Opinions are my own and additional products used in the project were selected by me.

Looking for a unique DIY wall art idea with a fun twist? Awesome! You will LOVE this wall art!

Diamond Shaped Wood and Mosaic Wall Art

Diamond Shaped Wood and Mosaic Wall Art. Step by step tutorial on how to make unique wall art for your home.

I’ve been wanting to incorporate a diamond shaped wall piece to my home decor for awhile now. I just couldn’t seem to find anything in a store that made me go “WOW, this is exactly what I want!” My solution? Just DIY what I wanted instead!

To add a little twist to this DIY Wall Art, I decided to build it without using any glue! With the help of Scotch® Brand I knew I could do it! Have you had a chance to see all the things I was able to check off my to-do list with the help of Scotch® Brand?

This post also contains some affiliate links for your convenience. Click here to read my full disclosure policy.

Diamond Shaped Wood and Mosaic Wall Art. Step by step tutorial on how to make unique wall art for your home.

Diamond Shaped Wood and Mosaic Wall Art



  • Compound miter saw
  • Table saw
  • Jig saw

Cut list:

  • Plywood Background: 17 3/4″ wide by 20 3/4″ high
  • Frame pieces: 4x – 14″ long x 1 1/4″ wide x 1/2″ thick with miter angles of 40 degrees on one end and 50 degrees on the opposite end.
  • Interior pieces: 4x – 7″ long x 1 1/4″ wide x 1/4″ thick with miter angles of 40 degrees on one end and 50 degrees on the opposite end.
How to build unique wall art


Step 1: I started off by tracing my desired diamond shape design onto a piece of foam board with the help of a pencil and a ruler. I did this in order to get an idea of what it would look like and it would also show me the exact sizes and shapes of the wood pieces I would need in order to put it together.

Sketch your design before cutting pieces to make your wall art.

Step 2: Once I determined my design was perfect, we traced the outline of the diamond onto the piece of plywood. Using a jigsaw, we cut out the piece.

Wood Diamond out of plywood

Step 3: We measured and traced the 4 frame pieces and the 4 interior pieces onto scrap wood. We used a table saw and the compound miter saw to cut out the pieces.

How to cut scrap pieces of wood
Diamond details out of scrap wood

Step 4: With a sanding sponge, we sanded the 8 pieces of wood and the piece of plywood.

We then dry-fitted the frame pieces over the piece of plywood to make sure they all fit nicely together.

We made it so that the frame pieces would hang over the side of the piece of plywood by 1/4″.

Make sure to sand your wood pieces before dry fitting
Dry fit wall art before assembling it

Step 5: Using the same staining technique I usually use, I stained the 8 pieces of wood in brown.

It’s important to also stain the piece of plywood we had cut out for the base of the project, for hanging. I let them dry out for a couple hours.

How to stain wood easily
How to stain wood easily

Step 6: Next up, cutting the stained glass!

First thing we did was put on our safety glasses (very important!). We placed the stained glass on a flat surface and used our stained glass cutters to cut the stained glass in small pieces.

Safety tip: When using glass cutters, always cut away from you. To break the pieces apart once the glass is scored, snap outwards and not inwards, placing your thumbs parallel to each side of the score.

Stained Glass
How to cut glass into pieces. Learning how to cut stained glass safely.

Step 7: Time to attach the pieces of wood onto the plywood!

We placed all the pieces into place and traced around them in order to make sure they were well positioned when it would be time to stick them into place.

We applied Scotch® Extreme Mounting Tape onto the back of each piece of wood. For the center pieces, we applied two pieces of Scotch® Extreme Mounting Tape to make sure they had mounting tape their entire width.

We removed the backing and placed each piece into place making sure to apply pressure for about 60 seconds.

Roll of Scotch Extreme Mounting Tape
Using Scotch Extreme Mounting Tape in a unique way
How to determine where to attach wood detailing on design

Step 8: We placed Scotch® Clear Mounting Tape behind each piece of stained glass we planned on using for the mosaic.

We then proceeded to place them inside the diamond.

By leaving the backing of the Scotch® Clear Mounting Tape on, we were able to move the stained glasses pieces around as we pleased.

When the design was to our liking, we removed the backing and pressed the stained glass pieces into place.

How to attach mosaic pieces to wall art
How to attach mosaic pieces to wall art

Step 9: We applied ScotchBlue™ Painter’s Tape over each piece of wood.

How to apply ScotchBlue Painter's Tape

Step 10: Time to grout the diamond mosaic wall art!

We followed the mixing and application directions found on the box of the grout we purchased.

We applied the grout over the stained glass using rubber gloves and a plastic spatula.

Again, following the directions we removed the excess grout with a wet sponge.

How to grout a mosaic wall art

Step 11: Once we were finished removing the excess grout, we removed the ScotchBlue™ Painter’s Tape from the pieces of wood while the grout was still wet.

We let the grout dry for 24 hours.

Remove painter's tape as soon as you are done grouting.

Step 12: Now the really fun part, displaying the beautiful Diamond Shaped Wood and Mosaic Wall Art!

The mosaic wall art weighs about 10lbs so we applied four pieces of Command™ Large Picture Hanging Strips onto the back of the mosaic.

Since it was our first time using this product, we made sure to read the hanging instructions, the illustrations were really useful too!

One of the great things about using Command™ Large Picture Hanging Strips, besides the fact that it makes displaying artwork super fast and easy to remove, it also allows the artwork to be completely flat on the surface, so no shifting at all.

How to use Command™ Picture Hanging Strips to hang wall art
DIY Diamond Shaped Wood and Mosaic Wall Art

Diamond Shaped Wood and Mosaic Wall Art

Diamond Shaped Wood and Mosaic Wall Art. Step by step tutorial on how to make unique wall art for your home. Unique DIY Wall Art.
Diamond Shaped Wood and Mosaic Wall Art. Step by step tutorial on how to make unique wall art for your home. Unique DIY Wall Art.

What do you think of my brand new DIY wall art? Isn’t it fabulous? I love how it turned out! Crazy that it was made without using any glue or nails! I think I may make another one, in fact I believe I have enough stained glass to make two more!

I hope I have inspired you to DIY your own wall art and that hopefully you will try to build one in an untraditional way, it makes it even more fun!

Did you see the Nail-Less, Screw-Less, Glue-Less Birdhouse we built? It’s untraditional and super fun!

Have yourself a FABULOUS day!

P.S. I’ll be linking to these Parties.

Disclosure: A big THANK YOU to Scotch Brand for sponsoring this post. As always, all opinions in this post are 100% my own.


Sunday 13th of December 2020

I've always like the look of mosaic art. Your project turned out great and using that 3M tape is a nifty tip!

Astley Newman

Wednesday 3rd of July 2019

Beautiful. Simple but nice. For the last two months I have been trying to build a diamond shaped wooden frame and could not get the angles right. You have just helped me. the Lord puts an Angel at every post. Thanks.

Gentle Joy Homemaker

Tuesday 18th of July 2017

Wow... looks like a lot of work, but it looks great! :)

Christine Cook

Wednesday 19th of July 2017

Thanks!! Yes, it was some work to put together... but totally worth it. I'm really proud of the project and how it turned out. :)


Tuesday 17th of January 2017

This looks so beautiful! Making it myself is probably beyond my talents, but you did an amazing job!

Christine Cook

Wednesday 19th of July 2017

Thanks so much! It was sooooo fun to make! I'm happy you like it!

Jane @SustainMyCraftHabit

Thursday 12th of January 2017

So unique! Love the thought and care in this in a time of fast DIYs!

Christine @ theDIYdreamer

Tuesday 17th of January 2017

Awwww thanks so much Jane!! Thanks so much for noticing the time it took to make, it sure was worth every minute! :)

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