SOLID OPAL AND TANZANITE RING

FACTORY DIRECT

This    is a ring with a natural solid opal from Lightning Ridge surrounded by 6 Tazanites.  The Tanzanite   stones i bought when i   was at the Arusha gem show in Tanzania  recently .

This stone has been confirmed by our in house gemologist.{AIGS}

                                The workmanship and quality is excellent.

                                                    Natural solid stone

                                                    Body base tone N5

Sterling silver

Stamped 925

Size of opal 8 x 6 mm app

Size of Tanzanite 2 mm app

Weight of opal 1.25 cts app

Total weigh 19.85 cts   app

Ring size[USA] : 9

Opal Body Tone Scale as per recommendation by the Australian Opal and Gem Industry Association Ltd.

More Information

Tanzanite      is an extraordinary gemstone. It occurs in only one place worldwide      -Tanzair africa. Its blue, surrounded by a fine hint of purple, is a      wonderful colour. Thanks to its unusual aura and the help of the New    York jeweller’s Tiffany, it has rapidly become one of the most   coveted    gemstones in the world.

Tanzanite      is a blue variety of the gemstone zoisite. It consists of calcium      aluminium silicate and is not particularly hard, having a value of 6.5    to 7 on the Mohs scale. For that reason, it should always be worn    carefully and never placed in an ultrasonic bath for cleaning or brought    into contact with acids.

The    deep   blue of the tanzanite is fantastic, and runs from ultramarine    blue to   light violet-blue. The most coveted colour is a blue    surrounded by a   delicate hint of purple, which has a particularly    wonderful effect in   sizes of over 10 carats. The well developed    polychromaticity of the   tanzanite is typical: depending on the angle    from which you look at it,   the stone may appear blue, purple or    brownish-yellow. Having said that,   most raw crystals are somewhat    spoiled by a brownish-yellow component,   though it can be made to    disappear by the cutter if he heats the stone   carefully in an oven to    approximately 500°. During the procedure he must pay careful   attention to the moment at which the colour turns to blue.  This   burning is a method of treatment which is regarded as customary in    the trade, but the raw stones must be as free of inclusions as   possible,  since otherwise fissures may occur. In fact working with   tanzanite can   sometimes give even the most experienced cutter a bit   of a headache,  the cleavage of this gemstone being very pronounced in   one direction.  This exclusive gemstone is cut in every imaginable   shape from the classical round shape to a number of imaginative   designer cuts.