https://www.royalquartz.com/index.php?main_page=product_reviews_info&products_id=31&reviews_id=1 2007-04-30 daily 1.00 https://www.royalquartz.com/index.php?main_page=product_reviews_info&products_id=126&reviews_id=2 2007-08-16 daily 0.50