Tanzanite

Tanzanite is one of the newest gemstones currently known. It was discovered in 1967 in Tanzania, and that is still the only place where tanzanite is found. The legend surrounding its discovery says that it was first found by Masai herders returning to the grasslands after a raging fire destroyed the area.

The brilliant blue and purple gemstone has rapidly become one of the most popular gems available today. The color is unlike any other gemstone – a clear lavender blue that is cool and warm at the same time.

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Tanzanite buying guide

Tanzanite is graded from AAA to B grade, with AAA being the highest quality gemstone. AAA tanzanite is a pure, clear blue-violet, with no inclusions or inclusions so slight that they’re barely visible at 10x magnification. When shopping for tanzanite you may hear the term ‘Block D AAA tanzanite’. This is a reference to the divisions that have been made for mining. Much of the AAA tanzanite being mined comes from the block D area. There is nothing special about having come from Block D, but it is being used as a marketing ploy to imply that lesser grade stones are of higher value.

Most tanzanite sold has been heat treated to deepen and set the color. One of the most attractive features of tanzanite is its trichorism – its color shifting properties. Be certain to examine your tanzanite stone under different types of light. Under ordinary daylight, the stone will be more blue. Under incandescent light, the purple and red flashes of the stone will be far more evident.

Tanzanite care

Tanzanite is a relatively soft stone at 6.5 on the Mohs scale. It requires careful and respectful handling to avoid damage to the stone.

Everyday caution

Avoid situations where your tanzanite jewelry might be scratched or knocked by other stones and surfaces. Keep the stone clean by polishing it occasionally with a soft, dry cloth and giving it a cleaning about once a month.

Cleaning your tanzanite jewelry

Clean tanzanite jewelry with warm water and dishwashing liquid. Let the piece soak for 10 to 20 minutes, then scrub with a soft toothbrush to remove any remaining residues. Avoid heat cleaners and sonic cleaners, both of which can damage the tanzanite. Dry carefully with a soft cloth before storing.

Storing tanzanite jewelry

As noted, tanzanite is easy to scratch. When storing it in a jewelry box, fold it in a protective cloth or fabric bag to prevent damage to your stone.