21 Jul 202124 Apr 2022 CITY OF 8 bluestone carrier concrete floor granite ground marble massive natural brick plate ANTONYM COMPARE block formation stepping stone MOVING AXIS bluestone tiles cave cutout final resting grave graveyard high ground rampart underground BUILDING BLOCK firm QUOTES ‘Hard / Hardness’ and colour in GermanyHard / hardness: black 43%, blue 15%, silver 12%, … Heller E. (1989) PrintFacebookLinkedInRedditTwitterTumblrPinterest