The Mystery of Antique Black Sea Glass
One of my favorite things to do at the beach is search for sea glass. The mystery of where and when sea glass came from is both exciting and romantic. Colors in white, brown and beer bottle green are common to find; but shades of blue, purple, yellow and red are hard to come by. In Costa Rica, I sometimes find jade greens and thick black pieces that look brownish or olive green when held to the light. After doing some research, I found out that these black pieces are extremely rare and collectible. Black glass was made as early as the 1500's and stayed in circulation until the 1800's. Black glass was made before refrigeration to protect liquids sensitive...