Mrs. Rickey named it based on the color of the local quaking aspen trees.

[4] The post office is now located and has been operated by the Robert William Mckay Family Ranch since the 1920s.

[6] It is bordered to the south by the community of Coleville and to the northeast by the Nevada state line.

According to the Mono County government, Antelope Valley, including Topaz, is expected to see significant population growth.

[6] U.S. Route 395 passes through Topaz, leading south 38 miles (61 km) to Bridgeport, the Mono county seat, and north 42 miles (68 km) to Carson City, Nevada.

[1] Topaz is drained by the West Walker River, which flows north into Nevada.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C).

There were 42 housing units at an average density of 9.6 inhabitants per square mile (3.7/km2), of which 13 (61.9%) were owner-occupied, and 8 (38.1%) were occupied by renters.