This clock looks like made of malachite. The pattern of thin green, blue and white lines imitate malachite structure. Like real malachite this clock changes its color depending on the color of external light. You may see this in the pictures. This intricate surface pattern is split in two unequal parts by a transparent trapezoid with transparent green and blue strips. Light green, blue and turquoise pebbles organically add hourly marks. Light blue hands perfectly fit the color palette of the clock. The clock was made using a fused glass technique named “glass combing”. I used a steel hook to rake a molten glass surface at a temperature close to 1700F (925 C). A resultant pattern is unique and hardly could be repeated. The clock has a battery powered quartz movement which is very precise. Usually you need to replace batteries only once in 1.5 – 2 years depending on battery type. One AA battery is required. Diameter: 11.5 inches.