1 glass bottle filled with crushed Yooperlite dust approximately 2oz of dust in each bottle.
The Yooperlites dust is made using an industrial rock crusher and is 400 mesh or smaller. Great for crafts, epoxy, glass blowing etc..
To see the fluorescent glow effect you must use longwave 365nm filtered UV light also available at www.yooperlites.com
Each bottle is approximately 3 1/8" tall by1 1/4" wide.
Weight total for the bottle and dust is 3.3 oz.