Overall, 300,000 lights are used in the display, all low-energy ... Even better, the Seven Dials area of Covent Garden is getting a whole new Christmas lighting scheme this year.

This selection of gems from Ouro Prêto, Brazil, and Russia's Ural Mountains, displays the golden orange to pinkish red color range of precious topaz. The gems range from 7.61 to 14.33 carats in size.

USGBC accelerates and scales transformation of the built environment to minimize climate impacts and enhance the well-being of people, the environment and communities worldwide.