How Old is Your Sea Glass?

During the first half of the 20th century most bottles produced were brown, green, or clear. Those colors were less expensive to produce. Brown was often used to protect the contents of the bottle from sunlight. Where I live on Cape Cod, those are the most common colors of sea glass that I find. The more rare sea glass colors such as red, yellow, turquoise, teal....were mostly made before the 20th century. Black sea glass can date prior to the mid-1800's. Yellow-green glass can date prior to 1930. Soft green sea glass from Coca-Cola bottles can date from 1915-1970. A favorite sea glass color is cornflower-blue. This color could come from a Milk of Magnesia bottle which dated in the early 1900's. The sea glass color orange is considered to be the rarest of all colors with the chance of finding orange sea glass as rare as 1 in 10,000 pieces found. Orange was from tableware used in the 1900's. For more sea glass history, check out the book: Pure Sea Glass by Richard LaMotte. It is filled with useful sea glass information!

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