Pearls:

Pearls are associated with the moon and its goddess, Diana. I work extensively with pearls and recently discovered that my name means Diana, goddess of the moon. Pearls are very soft; softer than your teeth. Therefore, they scratch and stain easily, and can be corroded by exposure to hair spray, perfume and similar chemicals. Pearls are available in all colors. Natural colors are limited to gold, white (sometimes with pink undertones), pink, peach and black (sometimes with peacock-colored overtones). Pearls may also be dyed or irradiated to achieve a desired color. All pearls are cultured and dyed, unless stated to be natural or natural colored.

Tourmaline:

Apatite:

A little known but neon-colored stone, it comes in blues and greens, yellow and clear. It is a fairly soft stone, and should be worn and handled carefully. These stones are said to promote self expression and healing (particularly of the mouth, throat and thyroid).

Sapphire:

The best-known color of sapphire is deep blue, but sapphire also occurs naturally in a rainbow of other colors, including pale blue, pink, yellow, and pinkish-orange (padparadscha). Sapphire is the form of the mineral corundum other than red corundum (which is called ruby). They are very sturdy and brilliant stones. They may exhibit asterism (that is, a star effect). Often they are cut for weight rather than beauty and may have odd-shaped undersides. They are believed to promote communication, insight, intuition or guidance, and to induce wisdom as well as spiritual enlightenment. Sapphire also was referred to as a stone of prophecy or a philosopher's stone.

Spinel:

As you may know, many large red stones formerly thought to be rubies or red diamonds recently have been correctly identified as spinel. They are very brilliant, and come in many colors, including red, pink, blue and green. They are said to relieve stress and depression and assist with mental rejuvenation.

Ruby:

Ruby and Sapphire are the same mineral: corundum. Ruby is the red version of corundum. They range in color from deep red to fuchsia, depending on the country of origin and other chemical components.

Emerald:

Emeralds have a unique deep green color. They are often heavily included with "gardens" because of the pressure under which they were formed. Emerald is a member of the beryl family, which also comes in gold (golden beryl), pale green (green beryl), pink (morganite) and blue (aquamarine). They have been mined for centuries, and are associated with fidelity, increased intelligence, improved memory and eyesight. Like sapphire, it has been associated with prophecy and psychic power.

Drusy
Stones:

These are minerals with their crystal structure exposed, like the inside of a geode on a smaller scale. Often, drusy stones exhibit more richness of color than their composite mineral.

Garnet:

Like sapphire, garnet comes in all colors except blue, but including green (tsavorite or demantoid), magenta, pink, red, and orange (mandarin, hessonite or spessartite). They have very high dispersion, and so produce lots of sparkle. Demantoid garnets are highly collectible; they can have a distinctive inclusion in the shape of a horse tail. Garnets were once believed to reduce toxins in the body and heal emotional problems. They exert powerful protection, as a lucky stone. They may also balance energy levels.

Topaz:

I don't often use topaz, but they come in wonderful colors, including golden, pink and various shades of brown and blue. All darker blue topaz (such as London Blue) is irradiated to remove color impurities and deepen the blue color. Imperial topaz (deep peach) is highly sought after and rare. Topaz is also a powerful electromagnetic stone, and is used to calm emotions and restore vitality. It also may help focus mental clarity, reduce mood swings and insomnia, and align emotions and thought.

Aquamarine:

Generally pale blue and ice-like, aquamarine in larger sizes retains more color and looks darker. Recent finds have also produced darker small size aquamarines. Aquamarine is the blue version of the beryl family. Pale green beryl may be referred to as aquamarine or as green beryl. Aquamarine is deemed to have purifying powers. It is referred to as the stone of sailors and is believed to possess certain attributes of the sea, including calming, soothing and cleansing. Aquamarines are generally heated to remove inclusions.

Diamond:

Colored diamonds are available in natural (pink, yellow, champagne and other shades of brown, green and blue) and irradiated colors (the entire color spectrum can be created this way). Diamonds are pure carbon, an essential building block of all matter. It is the hardest of all gem stones and is treasured not only by jewelry lovers but also by industrial types, who use diamonds (or diamond dust) for saw blades, and the windows of deep-space exploration ships. Diamonds can absorb and amplify the wearer's thoughts and attitudes, positive or negative. It is a symbol of prosperity and love.

Amethyst:

Some amethyst is mined right here in Arizona! Amethyst is a highly popular purple quartz, and ranges in color from pale to very deep. It tends to have color zoning where the colors alternate between purple and clear, which is one way of identifying whether it is a natural untreated stone. You may also see Ametrine, which is where purple and gold or yellow quartz have grown on the same crystal. Yellow or golden quartz is called Citrine. Amethyst was used in ancient times to prevent overindulgence in food or drink. It generally was used as a protective stone and for self healing. The major spiritual property was to aid second sight and open up the chakra center of the mind. It can be used as an aid to meditation.

Zircon:

Zircon is a natural stone that comes in all colors. They have been maligned by the term "cubic zirconium" which of course refers to a man-made stone. Zircon can be incredibly beautiful, very brilliant in shades of green blue and brown, but they are not sturdy and care should be taken when wearing them, especially in rings. It can hold, absorb and express energy, and is generally associated with emotional and physical balance.

Alexandrite:

A rare, sought-after phenomenal gem. The phenomenal quality is a color change: alexandrite in daylight appears green or bluish-green, but under incandescent light, its color appears red or violet. The gem is named after Tsar Alexander I of Russia, having been discovered on his birthday. Because of their rarity, alexandrites are very expensive, and often synthetic stones are used as an alternative.

Chrysocolla:

Chrysocolla also is mined in Arizona; it is found in and near copper mines. It generally appears in light greens to deep blues, and can be translucent or opaque, with veining similar to turquoise. It symbolizes prosperity, and business astuteness. Because it is a copper stone, like copper, it blocks bottled-up emotions that may be clouding the mind. It thereby alleviates emotional confusion while expanding and opening the mind.

Amazonite:

Found in North and South America, amazonite is translucent white, pink or pale blue; the surface can have spider-web-like white veining. It provides hope and faith and strength in dealing with daily life. It also is said to reduce self-destructive behavior.

Moonstone:

Part of the feldspar family, moonstone appears in delicate colors ranging from pale white to pale pink to pale blues and greens, it shimmers like the moon on the sea, primarily with blue accents. Maybe for that reason it was used by travelers for protection, especially on sea voyages. It also is known for heightening sensitivity. But beware, it may lose its luster if the wearer holds in anger. It's one of my favorites because it, too, is associated with Diana, the moon goddess.

Labradorite:

Labradorite also appears in many colors, it may be translucent or opaque, but exhibits a metallic sheen of gold, blue and green. That is its phenomenal quality. It generally is not faceted, but used in cabochon form for jewelry. It fosters originality and assists the wearer in discerning and using her or his strengths.

Opal:

Opals are fragile, beautiful stones that come with their own internal rainbow, with an outer color of white, orange, black, blue and others. It's the rainbow within and size of the material that give opals their market value. Many opals become crazed, that is, the surface cracks, due to loss of water. They should be stored in a cool place, away from sunlight and should be treated with care. Because of its high transference of energy, opals are said to bring your desires into being, especially regarding love and romance.

Peridot:

Peridot also is mined in Arizona. They generally appear as olive green or yellowish-green. Peridot was associated with the sun, like topaz. It was used in Egypt to repel thoughts of jealousy or envy, and because of its association with the sun, peridot was believed to remove dark vibrations like fear.

Citrine:

This is the yellow to gold form of the quartz crystal. It also appears in colors in between, like madeira which is a deep orange. It is said to assist with mental and emotional clarity, problem-solving and self-discipline. It can appear in the same crystal as purple quartz (amethyst) and is then called Ametrine.

Tanzanite:

A recently-discovered purple and bluish-purple stone, tanzanite has become extremely popular. Unfortunately, due to a mining disaster in Tanzania, supplies are very limited. It is a zoisite crystal and can be used to open the crown chakra for clairaudience.