We can't know if it is worth buying if we don't know how much it costs. It is certainly worth buying for a hundred bucks but maybe not for the price you are offered. Also, EGL is often frowned upon in these parts, but I am no expert. Is it EGL USA or international?
I realize the color is a true H according to GIA standards and clarity maybe SI1. The stone it self is eye clean and even under the loop looks good. Very white diamond as well