TURQUOISE Worn by the Pharaons and cherished in the ancient Egypt. In China it was carved more then 3,000 years ago. It’s the favorite stone of the Native Americans and it is considered a national treasure in Tibet, believing it brings good health, fortune and protects from evil. European tradition says that offering a ring with a turquoise on it means “forget me not”. This fantastic stone has been appreciated for long time and very much loved by current generation. Maybe because of its ocean like blue to green color, or its unique translucent to opaque texture, it certainly is one of a kind stone, a natural vein of matrix often runs through it. These veins are the remnants of the rock in which this stone is formed and where its personality comes out. With a fairly low hardness on the Mohs scale of 5 to 6, this stone is quite fragile. Therefore this gemstone is often treated to improve its appearance and durability. Firm to light, this stone can discolor and break when exposed to high heat, cosmetics, oils or acids. Today most of turquoises are produced in the USA, in particular Nevada and Arizona. China also has a great production of this lovely blue stone, specifically in the Hubei Province. TANZANITE Tanzanite is a mineral from the Zoisite species and comes in a wonderful range of blues and violets. This gem is a quite recent discovery of the 20th century, it was first found in the Merelani Hills in Tanzania in 1967, and named in honor after its country of origin. You can’t find it in any other part of the world but in Tanzania. Tanzanite is a naturally brown colored crystal, but when heated it brings out its wonderful purple to blue color. Tanzanite’s appearance is influenced by its pleochroism, which is the ability of a gemstone to reveal different colors when viewed from various crystal’s directions. Its main colors are red-violet, deep blue, yellow/green and reddish/brown. The yellow/green or brownish color disappears during the heat treatment process to emphasize the more valued blue and violet. The cut’s choice of the stone is done to highlight more of the blue or the violet color. Different lights also affect its color appearance. White light or daylight will make the stone look bluer, while incandescent or yellow light will accentuate more of its violet and purple color. For this reason this stone is also known as “mood changer”. With a Mohs hardness of 6 to 7 is a fairly durable stone. It’s best worn on pendant and earrings. Resistant to regular temperature, light and common chemicals, it might however crack under very high temperatures. It get easily damaged by acids. Warm soapy water is the best way to clean it while ultrasonic and steam cleaners are not recommended. ZIRCON With a great range of color shades (from red, orange, yellow to brown, green and blue) zircon offers a great variety of choice. The colorful variety shows strong brilliance and fire (a multicolored light reflects from the stone when light penetrates) very similar to a diamond, making it a common simulant. Found in several locations around the world, Australia is known to be the biggest producer. In the Middle Ages, Zircon was said to aid resting, prosperity until honoring and bring wisdom to its owner. Zircon has a range from 6 to 7.5 on the Mohs scale of hardness. The gem is generally firm when exposed to light, but some heat-treated stones may revert to their original color (usually light brown) after prolonged exposure to bright light. Exposure to heat may alter the color of some zircon, but it’s usually firm when exposed to chemicals.