Semiprecious Gemstones Education

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Semiprecious Gemstone Education

There are many other gemstones, semi-precious stones, that are widely used in fine jewelry. The most popular ones would be: Amethyst, Aquamarine, Black Onyx, Blue Topaz, Citrine, Garnet, Peridot, Quartz, Tanzanite, Tourmaline and other.


Amethyst occurs in primary hues from a light pinkish violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue.

Aquamarine captures the beauty of the sea, its pastel blue tinged with a hint of green. The icy color is as fresh with earth tones as with other pastel shades and the perfect accompaniment to grey and navy

Black Onyx
The little black dress of gemstones, opaque black onyx takes on extra polish in eye-catching faceted cuts. It has the look of black diamond for less. Like all quartz varieties, black onyx is durable and suitable for everyday wear.

Blue Topaz
Pure topaz is colorless and transparent but is usually tinted by impurities; typical topaz is wine, yellow, pale gray, reddish-orange, or blue brown. It can also be made white, pale green, blue, gold, pink (rare), reddish-yellow or opaque to transparent/translucent. Blue was once the rarest color of topaz, but today it is the most common, thanks to a stable color enhancement process involving irradiation and heat that was developed in the 1970s.


Citrine, a yellow quartz gem, adds a squeeze of lemony sparkle to any jewelry design. Often paired with amethyst, the purple quartz gem from the opposite side of the color wheel, citrine complements greens, pastels, reds, and earth tones too. Citrine is a warm golden color.

Break open a pomegranate: see the tiny glossy red seeds? Now you can see why garnet comes from the Latin word for seed, granatum. Garnets are durable and suitable for everyday wear but protect them from sharp blows. Clean with mild dish soap: use a soft brush behind the stone where dust can collect.

Peridot is the extraterrestrial gem: tiny peridot crystals have been discovered in meteors that fall to earth. On our planet, this lime-green gem forms in volcanoes, under tremendous heat and pressure. With a hardness of 6.5, peridot is harder than metal but softer than many other gems. Store peridot jewelry with care to avoid scratches. When you wear it, protect it from blows. Because peridot is sensitive to rapid changes in temperature, never have it steam cleaned and avoid ultrasonic cleaners.

Quartz is the most versatile gem family, spanning the spectrum from well known gems like purple amethyst, green amethyst and golden citrine, to lesser known varieties like chocolate brown smoky quartz, pink rose de france amethyst, lemon quartz, rose quartz, and clear rock crystal, which we group under quartz. As beautiful as it is affordable, quartz is an irresistible addition to your jewelry wardrobe. All quartz gemstones are durable and suitable for everyday wear. Clean with mild dish soap: use a toothbrush to scrub behind the gem where dust can collect.

Tanzanite has a velvety purplish-blue unlike any other gem. Mined in only one place in the world, a five-square mile area in Merelani in Tanzania near the feet of majestic Kilimanjaro, tanzanite is exceptionally rare. Of course, tanzanite is an ideal complement to all the rich blues, purples, and greens in your wardrobe. But the velvety depths of this gem are also beautiful worn with earth tones, from chocolates to rusts and golds. Tanzanite jewelry is a little more delicate than other gemstone jewelry and should not be set in a ring that will be worn during strenuous activity. Never clean tanzanite in an ultrasonic cleaner or have a ring resized or repaired without having the gem removed.

Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink, etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallization. Almost every color of tourmaline can be found in Brazil. Tourmaline is durable and suitable for everyday wear. Clean with mild dish soap: use a soft brush behind the stone where dust can collect.


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