Semi-Precious Gemstones Knowledge Introduction I

Alexandrite

A rare, color-changing gem, alexandrite is an emerald green in daylight, but takes on a deep red hue when seen under incandescent lighting. Chromium ions in the crystal structure intensely absorb yellow light, causing the unique and impressive shift in the color spectrum.

Amber

Made famous in popular culture by Steven Spielberg’s Jurassic Park, amber is fossilized resin from trees dating back millions of years. With a warm yellow hue, amber can sometimes contain insects, leaves, and other organic matter in a kind of time capsule spanning eons. The history of such pieces, forged above ground instead of below, attracts science-oriented minds and those looking for a unique connection to the past.

Amethyst

Thought to be stained by tears of wine from the Greek god of intoxication Dionysus, Amethyst is the violet variety of quartz and the birthstone for February. While colorless quartz is found in nearly every corner of the earth, the amethyst variety is considerably rarer. It has long been thought to have healing powers, and gives its wearers cool-headedness and clarity.

Ametrine

Also known as trystine or bolivianite, ametrine is a combination of both amethyst and citrine. This unique quartz variant has zones of both purple and yellow or orange. Ametrine first made its appearance in Europe through a gift to the Spanish queen by a famous conquistador.

Ammolite

Ammolite is a biogenic gemstone, like pearl or amber, in that it is produced by biological processes. Ammolite is made up of the fossilized shells of now extinct ammonites, shelled sea creatures that used to thrive in the oceans of North America. With iridescent spectral colors, ammolite makes an exciting addition to any jewelry piece.

Aquamarine

Aquamarine is a blue variety of beryl, found in places like Sri Lanka, Madagascar, Columbia, Zambia, and the United States. This gem comes in a variety of shades, from light and airy turquoise to a dark blue variety called maxixe, which is much rarer.

The article comes from China Chang'an stainless steel jewelry  manufacturer - A2A, the website is www.stainlesssteelacc.com .