Unlike other rubies and sapphires its not in fine quality when its brought from the mines. Buyers should look for stones which are eye-clean,with no inclusions visible to the unaided eye. Its mostly used in astorology and in jewelery too.
Its most productive source are Sri Lanka, Vietnam, Tanzania, Madgascar and Pakistan.
Topaz is found colorless, but some colors are found rarely like golden, orange, pink, perple and red which is to precious Topaz. But these topaz fade by time.Due to its orange to red-orange color, topaz generally looks best under incandescent light which is most stunning Topaz.
Topaz is most clear in quality its transparent. Due to the shape of the rough topaz is generally cut as elongated stones, typically emerald cuts, elongated ovals, cushions and pears. To save weight, pears in particular are often cut with overly narrow shoulders.
Topaz mostly found in Nigeria, Srilanka, Burma, Brazil, Russian Federation, USA, Mexico and Pakistan. But most favorite and most productive source is Brazil.
Due to its orange to red-orange color, spessartite generally looks best under incandescent light. Spessartites from most sources are reasonably clean. Thus eye-clean stones are both desirable and possible. But when its furnished its blooming and looking too nice. Major Source of this gem is Brazil, Mozambique, USA, Burma, Madgascar, Nigeria and Namibia.
Spessartine has never been synthesized, but a number of imitations exist, including natural stones such as hessonite garnet, and man-made imitations such as glass which is most durable and fancy look. In night and with a touch of lighting its blooming which look most wonderful and amazing.
The color should be as intense as possible, without being overly dark or yellowish green. These include green glass and green YAG. Green glass is also common at the mines in various rough forms and can be use in different work which is most essential part of the work.
The majore par of the world where this gem stone is found is Tanzania and Kenya. These countries producing a big part of it.