Pour 4 cups 950 ml of water into a large bowl separate from the first bowl.
Marbles with air bubbles.
Older marbles will have certain bubbles or flaws caused by the glass blowing process.
These will go away as you prepare the other ingredients.
Newer marbles will have slightly different colors in their designs and the designs themselves often look different.
Don t worry if the mixture develops air bubbles.
As a rule of thumb vintage american cat s eyes tend to have very clear glass.
Im a little unsure of how they can exist without cracking the marble though.
Stir the 2 ingredients together with a spoon until the calcium.
Compare the colors of one type of marble to another.
These are transparent color base marbles with opaque white swirls in them.
Second the christensen agate version tends to have tiny air bubbles inside it which the akro version does not.
Christensen agate produced slags in a variety of colors.
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Air bubbles are fairly common in certain machine made marbles and ive seen them used a lot in contemporary marbles as well.
Does air have a similar coe to glass.
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Or is there something else going on here.
Refer to knowledge gained from marble research during this step.
Mix 5 grams of calcium lactate with 4 cups 950 ml of water.
Add 5 grams of calcium lactate.