Jamkhana (dhurrie or dari) in local language means floor covering mats which are widely usually used during marriages and functions (ceremonies) and in homes during occasions. Navalgund dhurrie (cotton dhurrie) are well known for their excellence in quality of their structure, originality of color and form that makes them unique from other type of floor coverings mats.
Each dhurrie is divided into three parts with centre and two ends, where centre is woven with geometric and simplified natural forms and the ends woven in reflected symmetry. Dominant color used is red which is used as the background in most of the dhurrie, yellow to set the other colors to place within it, green, black and white are used as accenting colors. Placing of the colored yarns (threads) in variations led to the pattern of designs on the jamkhanas.
For more details: http://www.dsource.in/resource/dhurrie-weaving-belgaum-karnataka