Roman Glass 4-15mm Center Drilled Coin - 14-15 Inch Cube Faceted or bright blue

or bright blue

Phosphosiderite is a combination of phosphorus and iron

The name "biotite" is used because these minerals generally cannot be distinguished without optical

These flecks glitter as they catch the light and appear green against the dark glass

Tektite is a natural glass formed by meteorite collisions with Earth

Roman Glass 4-15mm Center Drilled Coin - 14-15 Inch Cube Faceted or bright blueRoman glass that has been turned into contemporary beads refers to ancient Roman glass artifacts (often shards or fragments) that are carefully salvaged, sometimes reshaped, tumbled, or polished, and then drilled to be incorporated into modern jewelry designs. These beads are highly valued for their historical authenticity, unique iridescent patinas (caused by centuries of burial), and often distinctive colors that reflect the glassmaking techniques