Pietre preziose

Blue Topaz gemstones:   Blue Topaz Gemstone Common Inclusions Found in Blue Topaz Gemstone Blue topaz is a Type 1 gemstone, which means it is almost completely free of inclusions that can be seen with the naked eye. This level of gemstone clarity makes blue topaz an "eye-clean" gemstone. However, some inclusions may still be present under magnification, but they generally do...