: Ali Somarin2019-4-11 · Brands: A. O. Smith, US Boiler, Hubbell, American Water Heaters, Bradford White Corporation, Niagara Industries Inc, Super Supreme, Tankless Inc. American Made Water Heaters We are compiling an ever growing list of U.S. water heater manufacturers & brands, which might include large corporations, small companies and individuals.

2019-5-26 · Topaz is an 8 on the Mohs scale of hardness, but it has poor toughness, so care is required to avoid chipping or cracking. To clean this November birthstone, do not use steam cleaning or ultrasonic cleaners. Warm, soapy water works best. High heat or sudden temperature changes can cause internal breaks in topaz.

2018-10-31 · U.S. refineries supply most of U.S. distillate demand. Heating oil imports generally supplement supplies during the winter mostly to help meet consumer demand in the Northeast. Distillate products are moved throughout the United States by pipelines, …

2019-5-27 · Some believe that "topaz" is a Middle English word, which was acquired from the Old French word "Topace" and Latin "Topazus", the root of which is in the Greek word "Topazios" or "Topazion"; the ancient name of an island in The Red Sea where the ancient Greeks mined a yellow gem that they believed to be topaz.

Headquarters: Remscheid, Germany2  · The 97.45-carat Blaze Imperial Topaz is in the collection of the Field Museum of Natural History. - Courtesy "Gems and Gemstones: Timeless Natural Beauty of the Mineral World" by Grande & Augustyn, U of Chicago Press. Most authorities agree that the name topaz …

|Crystal class: Dipyramidal (mmm), H-M symbol: (2/m 2/m 2/m)Topaz is one of the hardest and most versatile of naturally occurring gemstones. Technically classified as a mineral, Topaz can be found all over the globe, and occurs in a rainbow array of colors from clear, to the familiar brown, from pink, to the state gem of Texas, the blue topaz.

Topaz is a fairly common and inexpensive gemstone. It can be found in huge and flawless crystals, which can be faceted into giant gemstones which can weigh thousands of carats. Some of the largest gemstone pieces ever cut were of Topaz. Topaz is a hard and durable gemstone, and will not dissolve in most chemical solvents. However, it does have perfect cleavage which can make it prone to