Chequering

The translucent and shining waters of the calm sea covered fragments of old Roman villas, which were interlaced by sea-weed, and received diamond tints from the chequering of the sun-beams; the blue and pellucid element was such as Galatea might have skimmed in her car of mother of pearl; or Cleopatra, more fitly than the Nile, have chosen as the path of her magic ship.

[…] Above, the azure sky was glowing, Beneath, the flood, like silver flowing, Around in chequering light and shade, Her hues delighted Spring display'd; […]

What awful perspective! while from our sight / With gradual stealth the lateral windows hide / Their Portraitures, their stone-work glimmers, dyed / In the soft chequerings of a sleepy light.