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Gemstones

Learn about Sapphires, Rubies, Emeralds, Pearls and more. Precious and semi-precious gemstones come in every color imaginable, and they add interest and excitement to any piece of jewelry.

21 articles in this category :: back to FJU home

  1. A group of alexandrite jewelyr and loose gems shown in different light to demonstrate color change

    Gem in the Spotlight: Alexandrite

    Emerald by day, ruby by night, more expensive than diamond and more illustrious than sapphire, emerald, or even ruby, alexandrite has been known around the world as one of the most sought-after gems for the better part of 200 years. But, what makes this stone so special? Gemology of Alexandrite Alexandrite is the extremely rare, color-change variety of a gem species called Chrysoberyl. It appears bluish-green in daylight, fluorescent light, and some LED light. Under incandescent light, candle, and firelight, alexandrite appears purplish-red. This is because of how the trace... read more »

  2. A fiery red cushion cut ruby

    Gem in the Spotlight: Ruby

    Is it Ruby’s color that we love? Or is it Ruby’s beauty? Is it Ruby’s rarity, thereby is high cost? What ever it is, Ruby’s impact on humans is broad and deep. Ruby is the red variety of corundum. Any other color of corundum is called a Sapphire. The red color in ruby is caused by trace amounts of the element chromium. Ruby is 9 on the Mohs hardness scale. Ruby is the accepted birthstone for July. It is also the anniversary gemstone for the 15th and 40th year. Rubies are sturdy stones, but are still vulnerable to breakage and chipping... read more »

  3. Peridot is a bright yellow-green gemstone

    Gem in the Spotlight: Peridot

    Peridot is a lovely yellow-green gem with a rich history. Legend has it that Peridot was the favorite gemstone of Cleopatra. The ancients called it the “gem of the sun”. It was believed that peridot could chase away evil spirits and dissolve curses but only when set in gold. Peridot is the birthstone for August. It is also the accepted anniversary gemstone for the 16th year of marriage. Peridot’s unique yellow-green color is very attractive. The name “Peridot” is simply a French word derived from the Arabic for green. Peridot’s... read more »

  4. Tanzanite is a beautiful blue purple gemstone that is very rare

    Gem in the Spotlight: Tanzanite

    Beauty and rarity are two wonderful traits in a gemstone. Tanzanite has them both. In fact, it is estimated that Tanzanite is 1,000 times rarer than diamond. But, what makes Tanzanite so popular is its color. Tanzanite’s gorgeous color is a captivating mix of blue and purple. The deep hues of violet, indigo, and blue come together in an unrivaled blend only found in Tanzanite. The amazing look of Tanzanite demands a price to match. Yet, even with its dynamic look, Tanzanite is still less in price than better known... read more »

  5. Beautiful iolite jewelry and loose gemstones

    Gem in the Spotlight: Iolite

    Iolite is maybe not the first gemstone people think of for their blue-violet jewelry, but it should be near the top of the list. Iolite’s color range of blue, blue-violet, and violet competes for public attention with sapphire, tanzanite, and amethyst. They may have name recognition, but iolite has a rich, unique color and great gem value on its side. It is more subtlety nuanced than amethyst and deeper than many tanzanites. Iolite’s name comes from its violet color. It is from the Greek word “ios” meaning violet. Unlike many... read more »

  6. A stunning rich blue oval sapphire

    Gem in the Spotlight: Sapphire

    Few gems capture the imagination as does sapphire. Sapphire’s beauty inspired people to wonder. Ancient cultures had many lore and beliefs about the sapphire. The ancient Persians believed the earth rested on a giant sapphire whose reflection gave the sky its color. Ancient priests and sorcerers honored sapphire above all gems, for this stone enabled them to interpret oracles and foretell the future. Symbolizing truth, sincerity and tradition, it has been said that when Moses received the Ten Commandments they rested on tablets of sapphires. Marriage partners put great faith... read more »

  7. Loose opal gemstones

    Gem in the Spotlight: Opal

    The opal has been described as containing the wonders of the skies, sparkling rainbows, fireworks, lightning, the gentler fire of the ruby, the rich purple of the amethyst, and the sea-green of the emerald. Opal’s lore is as colorful as the opal itself. The ancient Greeks felt that the opal gave foresight and the gift of prophecy to the wearer. The Romans believed opal was the symbol of hope and purity. In fact, Pliny, the ancient Roman scholar in about 70 A.D., wrote that opal had the fire of the... read more »

  8. Tourmaline jewelry and loose gems

    Gem in the Spotlight: Tourmaline

    Tourmaline is a beautiful gem that comes in a huge variety of colors (sometimes even within the same stone). This article teaches you all about the history, folklore, and gemology of tourmaline including varieties like rubellite, indicolite, paraíba, and more. You'll also learn about California tourmaline and the unique piezoelectric property that has made tourmaline as useful as it is beautiful... read more »

  9. Gem in the Spotlight: Quartz

    Quartz is one of the most common minerals on earth. Many of quartz’s gems are common for gemstones but, some varieties are very rare. Some are Plain Jane like rock quartz, others are exotic like Drusy Quartz. Some quartz material is a dollar per pound others are $1,000 per carat. Quartz is a gemstone with surprising variety... read more »