Gravel pebble is one of the hardest aggregates found in Latvia and obtained naturally sieving gravel in various fractions. Chrushed gravel is used to produce asphalt, pebble – manufacture ready-mix and its products.

Manufactured in SCHWENK quarries Praviņas, Degole parish, Kļaviņi, Mārciena parish and Kurzeme, Lauciena parish.