After creating the massive marble sculptures “Pas De Deux” and “The American Woman,” Francisco Sotomayor focuses today on obsidian, volcanic glass from Mexico. With “Eagle of the Sun,” created with ...

Energized by exploring the characteristics of obsidian, Francisco Sotomayor combines artistry with technology to sculpt 12 pieces with images in each. Driven by curiosity, the sculptor embarked on a ...

Tesserae from the mosaic on the front of the San Giovenale chapel inside the Narni Cathedral were analyzed through non-destructive XRF analysis for the characterization of both colouring matters and ...

For the ancestral peoples of the Pacific Coast, obsidian (volcanic glass) was a highly valued raw material because it could be used to make razor-sharp cutting tools. However, for many parts of the ...