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Grade Sea Glass, Grade Beach Glass, Value Sea Glass

Have You Been Wondering How to Grade Sea or Beach Glass?

Here you will find an explanation of important features in real beach glass and a 5-grade quality scale, including jewelry grades and craft grades of glass.

Grade Sea Glass?

Grade Sea Glass
Yep! To establish the value of a piece of sea glass, you need to evaluate the grade (physical appearance) and the color rarity.   

Here we'll be talking about how to grade your beach glass.

To evaluate the color rarity of your pieces, click here.

The two main divisions are Jewelry and Craft Grade sea glass.These are broken down into a total of 5 categories:

1.  Jewelry

2.  Craft

Jewelry Grades of Sea Glass

Jewelry Grade A

  • Evenly and thoroughly frosted with very rounded corners. 
  • No chips, poorly-rounded corners, or visible defects.
  • Excellent for fine jewelry.
Here are two views of the same numbered pieces from two different sides. Notice the features.
View 1 - Jewelry Grade AJewelry grade sea glass View 2 - Jewelry Grade AJewelry Grade A Sea Glass
1. Cobalt blue
2. Brown
3. Teal
4. Turquoise
5. Pale sea green (seafoam)
6. Dark aqua
7. Light cyan
You will notice that pieces #2, #6, and #8 have some edges not quite as rounded.

If they were a little sharper, they would fall into a Jewelry B grade.

(For color ID see the Sea Glass Color Chart)

Jewelry Grade B

  • Same qualities as A grade sea glass but
  • with a small chip or defect visible from one side only OR
  • more defined edges/corners.
  • Very good for jewelry and arts.   

Jewelry Grade B
Jewelry grade B sea glass

You will notice here that #1 and #4 have obvious chips.

However they are the only defects and are visible from one side only, and so qualify as Jewelry Grade B.

Pieces #2, #3, and #5 don't have any visible chips.
  1. Aqua
  2. Green
  3. Brown
  4. Cobalt Blue
  5. Medium sea green
However, the edges are a little too defined to be Jewelry Grade A.

(For color ID see the Sea Glass Color Chart)

Jewelry Other

We haven't included a picture here, as the pieces do vary.  They may have
  • more than one of the defects of B grade, but
  • because of unique shape, color, or other qualities, it could make a nice jewelry piece.

Craft Grade Sea Glass

Craft Grade A Sea Glass

Craft Grade A

  • Evenly and thoroughly frosted but 
  • with chips or defects visible from both sides or
  • distinct angular edges and
  • not more than 1 rough or cracked edge.
Good for many art and craft projects.

Craft Grade A Sea Glass

Craft Grade B

  • Somewhat frosted.
  • May have chips, defects, more than 1 rough edge.
  • Good for mosaics and some craft projects.

Pet Clothing
Craft Grade Mixed Craft grade sea glass

Craft Grade Mixed

  • Somewhat frosted.
  • May have chips, defects, more than 1 rough edge.
  • Good for mosaics and some craft projects.
You can see that this mix of Craft Grade A and B sea glass is much less rounded and tumbled.
1. Cobalt blue 
2. Pale sea green
3. Off white (clear) Craft A
4. Light cyan
5. Misty Rose
6. Pale turquoise
7. Green
8. Dark olive
Pieces #1 and #2 are Craft Grade B.

Pieces #3 and #4 are Craft Grade A, being fairly well tumbled and smoothed but with distinct edges and some chips.

Pieces #6, #7, and #8 are actually somewhat shiny. Along with piece #5, they barely meet the standards to be considered sea glass.

However, the colors are not so common so might be kept in a collection until replaced with similar colors that are in better tumbled condition.

(From Sea Glass Color Chart)

Note: Grading sea glass is not an exact science as there is much individuality to each piece. The Grade Chart above contains the main points you'd look for when buying or selling (or deciding it's a keeper or throwing it back for more punishment). 

I might mention that Lin makes beautiful wrapped jewelry and has sometimes used a Craft Grade A shard because of uniqueness, color, and able to mask the defects sufficiently!  She also loves white, a very common color, because it goes with everything...use your judgment, and, MOST OF ALL, ENJOY!!

Next, take a look at the following pages:

Collecting Sea Glass
Finding Sea Glass
Collecting Sea Glass
Rare Sea Glass
Collecting Sea Glass
Sea Glass Color
Sea Glass
Color Spectrum Chart

Sea Glass
Fake Sea Glass Marbles?
Sea Glass bulk buy sea glass
Guide to Buying Sea Glass
Sea Glass
Natural or Man-Tumbled?
Sea Glass
Genuine Sea Glass?

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"Many thanks to you both for your time and insight!

I love your page. It's been a great resource in my hunting!

All Best,"

Amanda in Connecticut

"Hi David,

I received your sea glass hearts and I LOVE them all.

Thank you so much for sending the extra hearts.

I was so touched by your thoughtfulness and I appreciate you sharing these special gifts from the sea! Hope to see more of your sea glass soon!

Thanks again,"


"Hi David,

Just wanted to tell you thank you for the monthly sea glass newsletter. I love it, and look forward to it.

Thanks again to you and your wife."


"Hi David,

I just wanted to let you know I appreciate receiving my sea glass order so quickly.

Love the flowers, wave crest & rare pastels and the little extra surprise....you made my day!!"


"I am so fascinated by sea glass - I can’t believe at 70 I found a new hobby.

Thanks for the opportunity to search and read up on this!"


"Your site made me so happy tonight! Why?

Many happy memories swirled back into my mind when I saw your pictures. I spent my childhood on the beaches of Cape Cod and we spent many happy hours looking for sea glass."


"It is a pleasure and refreshing to meet people in the sea glass community that are willing to share! I got some great tips from your site. It was wonderful not to spend my entire vacation looking for a beach. Thanks again!"

Maryanne K.W.

"Hi David and Lin.

Love your sea glass web site. I enjoy your picture of the month and intend on winning at least once.

I have been collecting and creating things from sea glass for over twenty years. I find my sea glass on the beautiful shores of Lake Erie in Cleveland Ohio.

Thank you for sharing your treasures with me." Yours truly,

Cathy Lincks

"What an AWESOME site! I love reading about it, looking at all of your pictures, and planning my next vacation to the perfect beach.

Keep up the great work!"


"I’m a new subscriber to your newsletter and I love it!"


"Hi David,

Just wanted to let you know how much I appreciate your newsletters.

I never even knew about sea glass before 2 years ago, now of course I'm hooked, love it, just love it."


"Hi David and Lin - I love your website! Thank you for sharing info..."


"Hi David. Its Bill and Joan Laverick, Durham City, North East of England. We love reading your posts. Keep up the good work!"

Bill & Joan

"I soo look forward to reading your blogs."

Jacqueline Giguere

"Just wanted to let you know (since you were so helpful) that I won a blue ribbon (1st place) in Gifford Middle School Science Fair in the category of Environmental Science with my topic - Effect of a Florida Tidal Inlet on Wrack Line Sea Glass Volume.

Now, I will compete in the Regional Science Fair which will take place on Feb 2nd. My mom and dad and I had a lot of fun searching for sea glass.


Mary Hyde

"I am beginning to be a typical sea glass hunter - always looking for fun places to find glass!

I think your site is great - very informative - thanks for the time and effort you put into it. "


"I am beginning to be a typical sea glass hunter - always looking for fun places to find glass!

I think your site is great - very informative - thanks for the time and effort you put into it. "


"I love your email newsletters. I am 77 and try to get "glassin" whenever anyone will take me to the beach!! :-)) "

P. Paul

"Hi David

Just wanted to tell you thank you for the monthly sea glass newsletter. I love it, and look for ward to it.

Thanks again to you and your wife,

Judi Weber

"Hi David and Lin!

I SO enjoy you newsletter! Please forward it to my sister. I've got her hooked on the beauty of sea glass!

Thanks in advance! Happy 'foraging'."

Joan D

"Hi David and Lin,

I have shared your website with my other sea glass fanatic friends over the last couple of years and they love it as much as I do.

Yours is my favourite website of all time and the very best website I've seen for everything sea glass.

I can lose myself for hours in your website. Dangerous place!"

Anne O, Toronto

"Thanks so much for the information.

I visited Carbon Beach today.

Very small and few people but a nice supply of glass just as you stated.




" Hi Lin and David,

I have come to sea glass via my shell collecting and am finding it very addictive too. Last year I found a glass bottle stopper which was a thrill.

Very small and few people but a nice supply of glass just as you stated.

I really enjoy the newsletter and can easily spend an evening getting lost in the stories and comments."



Anne Cram

" Just wanted to thank you for all of your helpful information.

The sea glass community is filled with people who guard their "secret beaches" so it is refreshing to see that there are people who are willing to share.

It's so useful for those of us that don't live near a beach and travel to find our glass.

The information posted here lets us spend more time enjoying our adventure rather than wasting time looking for a great spot

Thanks again,


Anonymous Viewer

" Gee, my heart races when I hear about all these marvelous finds.

Kudos to this wonderful site and for those who share their finds.

You've got a friend in me,

Norma Myrphy

" I love your site, thanks for all the wonderful info.

I'm looking forward to my new hobby and participating in your odyssey Seaglass forum.



David & Linda,

So wonderful to have crossed paths with you and thanks for sharing your expertise on sea glass along with your wonderful website.

Ann & I have caught your infectious seaglass fever! Hope to cross paths again soon.

Happy and safe traveling!

Richard C. Wong ยท Portland, Oregon

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