Bullseye Turquoise Blue Opalescent Double Rolled 3 mm Glass

Please note: As stated on the Bullseye website:  Glass is hand rolled and cut sizes are approximate.  If you need the exact size of 10" x 10" or 5" x 10" for a project, we suggest purchasing the next size up of glass.  Please be aware that glass sizes may be slightly larger or smaller that the size you are ordering.  Contains Copper May React With Selenium, Sulfur, Reactive (000009, 001009, 001019) Cold Characteristics Uniform color. Working Notes A copper glass. May have dark color reaction at interface with cadmium/selenium or sulfur glasses including 000125, 000120, 000124, 001120, 001125, 001122, 001137, 001437, 000137. During processes that require greater heatwork, such as pattern or flow bar techniques, Turquoise Blue Opalescent has the potential to deposit trace amounts of copper on the surface of the kilnshelf. These deposits may react with sulfur-bearing glasses in subsequent firings. Such deposits may not be visible and can react even when the shelf has been properly scrap