Yes, there are color variations of Armenias Yerevan Basalt. Yerevan Basalt is a type of volcanic rock that is commonly found in the region surrounding Yerevan, the capital city of Armenia. It typically has a dark grey or black color, but it can also have variations in shades of grey, brown, or even reddish tones. These color variations can occur due to the presence of different minerals or weathering processes that affect the rocks appearance.