What is baruch shemtov's product, and how did he begin creating it? (site 1)

Baruch has also been passionate about the worlds of design and fashion from a young age. A fashion entrepreneur since his junior year of high school, Baruch launched his line of ties at age 15, garnering press and attention around the world, including features in The New York Times, The Times of London, GQ Japan, New York Magazine, and other publications. He and his designs have also been profiled on CNN, E!, NBC, and PBS. In 2013, Baruch launched his boys' tie collection and a coordinating father-son necktie range at Bergdorf Goodman, which featured Baruch's collection in its official Father's Day advertising campaign. Committed to American craftsmanship, Baruch's neckties and accessories are made by hand in the USA.

answer:

low silica content, thick and fluid, forms dark colored rock

explanation: