Ключевые слова: check, close up, control, copper emerald, crystal, dioptase, emerald, examination, examine, finger, gem, gemological, gemologist, gemology, gemstone, geological, geologist, geology, glass, gloves, green, hand, inspect, jeweler, jewelry, lens, look, loupe, magnification, magnifier, magnifying, mineral, natural, precious, quality, raw, rock, rough, sample, semiprecious, specimen, stone, study, test, verification, verify, view, watch, white, white background,