What gems are Trichroic?
Trichroic gems show three colours. Tanzanite & Iolite are examples of a trichroic gems. Tanzanite was only discovered in 1967. It has a striking blue/violet colour although there is a 3rd colour of yellow/brown.
Which month is a tanzanite birthstone for?
DecemberTanzanite / Associated month
With its vivid colors, high clarity and potential for large cut stones, tanzanite quickly became a sensation. Today, it is not only a December birthstone, but it is also the gem for the 24th wedding anniversary.
What stone is my birthstone?
Birthstones. What are the birthstones by month? January is garnet, February is amethyst, March is aquamarine, April is diamond, May is emerald, June is alexandrite, July is ruby, August is peridot, September is sapphire, October is tourmaline, November is topaz, December is blue topaz.
What is Trichroic?
(trī′krō-ĭz′əm) n. The property possessed by certain minerals of exhibiting three different colors when viewed from three different directions under white lights. [From Greek trikhroos, three-colored : tri-, tri- + khrōs, color.]
Is tanzanite a Trichroic?
Tanzanite is one of the only trichroic gemstones known to man, meaning it has the ability to display three colours within the same gemstone. As light passes though the gemstone, it vibrates in different planes, which causes the stone to show a different colour depending on from which axis you are looking at it.
What is my birthday crystal?
Your Zodiac (Sun) sign is determined by the position of the sun in relation to the earth at your time of birth….Birthstones.
| Zodiac Signs | Dates | Associated Crystal |
|---|---|---|
| Aries | 21 March – 20 April | Bloodstone |
| Taurus | 21 April – 21 May | Jade |
| Gemini | 22 May – 21 June | Agate |
| Cancer | 22 June – 23 July | Moonstone |
Is alexandrite a pleochroic?
Alexandrite is also a strongly pleochroic gem, which means it can show different colors when viewed from different directions. Typically, its three pleochroic colors are green, orange, and purple-red.
Is Sapphire pleochroic?
Blue sapphires often have greenish blue and violetish blue pleochroism. It’s most desirable to orient the cut so the stone shows the violetish blue color when it is set in jewelry.