Approx. 18 - 19mm

These marbles, although called 18mm, can vary up to 2mm diameter larger and/or smaller. They usually range between 16.75 - 19.5mm.
All sizes are approximations and can vary from one marble to the next. Please go to our Marble Info page to learn about marble sizing and the variations associated with machine made marbles.
Pricing shown for individual colors below is for 1 pound of marbles (approx. 55 - 59). For discounted pricing on larger quantities, click on the image.
Assorted Game 18mm
Price: $8.00
In stock
Opal Red 18mm
Price: $8.00
In stock
Opal Orange 18mm
Price: $8.00
In stock
Opal Yellow 18mm
Price: $8.00
In stock
Opal Green 18mm
Price: $8.00
In stock
Opal Sky Blue 18mm
Price: $8.00
In stock
Opal Dark Blue 18mm
Price: $8.00
In stock
Opal Black 18mm
Price: $8.00
In stock
Opal White 18mm
Price: $8.00
In stock
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