Karlovy Vary in the context of Ohře

Ooids (/ˈoʊˌɔɪd/, from Ancient Greek ᾠόν (ōión) 'egg stone') are small (commonly ≤2 mm in diameter), spheroidal, "coated" (layered) sedimentary grains, usually composed of calcium carbonate, but sometimes made up of iron- or phosphate-based minerals. Ooids usually form on the sea floor, most commonly in shallow tropical seas (around the Bahamas, for example, or in the Persian Gulf). After being buried under additional sediment, these ooid grains can be cemented together to form a sedimentary rock called an oolite. Oolites usually consist of calcium carbonate; these belong to the limestone rock family. Pisoids are similar to ooids, but are larger than 2 mm in diameter, often considerably larger, as with the pisoids in the hot springs at Carlsbad (Karlovy Vary) in the Czech Republic. Ooids have been the subject of scientific research for centuries.

Bohemian glass (Czech: české sklo), also referred to as Bohemia crystal (český křišťál), is glass produced in the regions of Bohemia and Silesia, now parts of the Czech Republic. It has a centuries-long history of being internationally recognised for its high quality, craftsmanship, beauty and often innovative designs. Hand-cut, engraved, blown and painted decorative glassware ranging from champagne flutes to enormous chandeliers, ornaments, figurines and other glass items are among the best known Czech exports and immensely popular as tourist souvenirs. The Czech Republic is home to numerous glass studios and schools attended by local and foreign students.

The oldest archaeological excavations of glass-making sites in the region date to around 1250 and are located in the Lusatian Mountains of Northern Bohemia. Other notable Czech sites of glass-making throughout the ages are Skalice u České Lípy, Jablonec nad Nisou, Železný Brod, Poděbrady, Karlovy Vary, Kamenický Šenov and Nový Bor. Several of these towns have their own glass museums with many items dating to around 1600. Jablonec nad Nisou in particular is famous for the local tradition of manufacturing glass costume jewellery. Its long history is documented by large collections in the Museum of Glass and Jewellery in Jablonec nad Nisou.

The Karlovy Vary Region (Czech: Karlovarský kraj) is an administrative unit (Czech: kraj) of the Czech Republic, located in the westernmost part of the country. It is named after its capital Karlovy Vary. It is known for spas, which include Karlovy Vary and Mariánské Lázně.

The Karlovy Vary Region, as a higher territorial self-governing unit, was created in 2000 in the northern part of the West Bohemian Region. The seat of the region is Karlovy Vary. In terms of size, number of municipalities, and population, it ranks among the smaller regions of the Czech Republic. Its area (3,314 km²) covers 4.25% of the territory of the Czech Republic. The Karlovy Vary Region is the third smallest region by area, right after Prague and the Liberec Region. By population, the Karlovy Vary Region is the smallest region in the Czech Republic, with approximately 279,000 inhabitants.

Moser a.s. is a luxury glass manufacturer based in Karlovy Vary, Czech Republic (previously Ludwig Moser & Sons in Bohemia, Austria-Hungary). The company is known for manufacturing stemware, decorative glassware (such as vases, ashtray, candlestick), glass gifts and various art engravings. Moser is one of the most collected of 20th century decorative glass and has been used everywhere from palaces to local restaurants. From its beginnings in 1857, as a polishing and glass engraving workshop, it developed into a lead-free glass manufacturer lasting through the 20th century until the present. It is considered as the most luxurious Czech brand as well as one of the world's most famous brands of luxury crystal. Every piece of glass that is made by Moser is hand made.