Iolite uses and purposes overview. Mg fe 2 al 3 si 5 al o 18 to fe mg 2 al 3 si 5 al o 18.
All a result of pleochroism.
Blue iolite gemstone. Zambian emerald natural vs clarity gemstone 10 12 ct cushion cut agi certified. Cordierite or iolite is a magnesium iron aluminium cyclosilicate iron is almost always present and a solid solution exists between mg rich cordierite and fe rich sekaninaite with a series formula. Whether or not the tales are true iolite mineralogists call it cordierite can be fashioned into beautiful gems.
Run of the mill stones often have a steely inky or washed out blue color but the best specimens can rival aaa tanzanite in the saturation of their blue violet hue. Since the color can mask inclusions it makes them less noticeable however avoid large inclusions or fractures as these can still make the stone more breakable. Blue iolite loose gemstone untreated 10 ct natural emerald cut certified q2565.
Iolite a gem variety of the mineral cordierite is. Iolite s name comes from the greek ios meaning violet and is the gem version of the mineral cordierite. A high temperature polymorph exists indialite which is isostructural with beryl and has a random distribution of al in the si al 6.
Blue iolite gemstone stud earrings sterling silver navy indigo jewelry gift for women her mom. For men iolite is an excellent royal gem which is perfect for men s fashion and gemstone jewelry accessories including cufflinks iolite rings and tie tacks. Get it as soon as thu aug 27.
A blue or violet blue iolite gemstone will become a duller gray or grayish yellow when viewed at a different angle. Free shipping by amazon. Iolite is an affordable alternative for more expensive blue sapphire or violet blue tanzanite.
2 0 out of 5 stars 1. 55carat brand 12x8 mm 5 pcs natural iolite stone lot pear faceted loose gemstone for jewellery making. 8 pcs violet iolite gemstone lot natural 2 50 ct 5mm pear cut agi certified gj47.
Iolite is an excellent gemstone for pendants pins brooches necklaces and bracelets. Overall iolite appears as violet blue or indigo but in different positions may shift to a yellow gray or honey color and even to a clear light blue. In viewing an iolite stone the colors violet blue yellow gray and a light blue can be seen.
Clarity grades have much less importance in blue gemstones than in colorless stones. Iolite is frequently step cut to enhance color and often windowed and or shallow cut to lighten tone. It is also referred to as water sapphire or dichroite.
Only 1 left in stock order soon. For this reason care must be taken by gemstone cutters to facet iolite gemstones so that their colors are oriented with the intense blue or violet showing from the top. For lighter toned blue gemstones a somewhat better clarity grade will improve the gem s appearance.
Strongly pleochroic iolite has been incorrectly called water sapphire as it can display a blue to violet hue in one direction and pale yellow to colorless in another. Its hardness of 7 7 5 makes iolite a suitable jewelry stone though the presence of cleavage must be taken into account and some care taken such as protection from blows.
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