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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.

23 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. Three loose rubies in a row triangle oval and pear shaped

    Gem in the Spotlight: Ruby

    Ruby has been the most prized gemstone for much of human history. It's rich red color is spellbinding and it remains a symbol of power and success even to this day. It is a hard and durable gem that, with proper care, can be treasured for generations. It is also a useful gem as its unique optical properties made a crucial component in the world's first functioning laser. Let's dive in to the gemology, history, and lore surrounding the incomparable ruby... 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. Group of loose spinel gemstones with finished jewelry

    Gem in the Spotlight: Spinel

    Spinel may be one of the most underappreciated gemstones in all of history. For centuries it has been confused with more popular gems like ruby and sapphire, and only recently have people begun to appreciate spinel for its own natural beauty. Commonly made in a lab spinel has been used a lower cost substitute for other gems, but natural spinel is actually a stunning gem in its own right. This in-depth article covers the gemology, history, and lore of this amazing and often overlooked gem... read more »

  5. 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 »

  6. 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 »

  7. Collection of sapphire jewelry and loose sapphire gemstones in many colors

    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 »

  8. Gem in the Spotlight: Opal

    Opal has been described as containing the wonders of the skies, sparkling rainbows, fireworks, and lightning. Its dazzling play of color is totally unique in the gem world, and the lore that surrounds it is almost as colorful as the gem itself. Opal is the traditional birthstone for those lucky enough to born in October, and it is found in a huge variety of colors (sometimes all within the same stone). Gemology of Opal Opal’s captivating dance of colors is a result of its unique internal structure. This gemstone is... read more »

  9. 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 »