Blue sea glass is one of the most popular colors among sea glass collectors and enthusiasts. Blue is found in different shades like soft blue, aqua, cornflower blue, cobalt blue, and turquoise. Several jewelers and crafters use blue sea glass for their projects. Blue sea glass contrasts nicely next to other sea glass in different colors, and it also happens to look like the colors of the oceans.
Finding Blue Sea Glass is Rare
Much of the blue sea glass people find comes from bottles between the 1880s to the 1950s.
Almost all of the blue sea glass shards I’ve found along California’s coast are small–about the size of baby peas.
Most soft blue sea glass comes from soda bottles, beer bottles, and fruit jars. They could also come from windows, windshields, and other flat glass.
Many pieces of cobalt blue sea glass come from Bromo-Seltzer bottles, Vicks Vapor Rub, and Noxzema jars. The color was even popular in ancient Egypt.
Cornflower blue sea glass is a little lighter than cobalt blue sea glass. It was used for Phillips’ Milk of Magnesia bottles and decorative glass. Cornflower blue is much rarer than cobalt blue.
Aqua blue sea glass comes from bottles produced for Ball, Mason, Atlas, and Kerr containers. Some shades were used for beer, soda, mineral water, and medicine jars.
If you find a piece of turquoise sea glass, consider yourself lucky. It’s extremely rare. Some even consider it more rare than red sea glass. Most turquoise sea glass come from vases, decorative bottles, flasks, art glass, and seltzer bottles.
Blue Sea Glass on the Beach
LaMotte, Richard. Pure Sea Glass Identification Cards.