Agate is a form of chalcedony quartz that forms in concentric layers in a remarkable variety of colors and textures.
Malachite
is a copper carbonate with distinctive green veining. Though not a
particularly hard stone, it takes an excellent polish.
Agate
is a form of chalcedony quartz that forms in concentric layers in a
remarkable variety of colors and textures. Geodes are rock cavities or
vugs with internal crystal formations.
Mali
Garnet, is one of the hybrid garnets, a mixture of grossular and
andradite garnets. The name derives from the West African country of
Mali where it was first discovered in 1994.
Alexandrite
is one of the rarest of all colored gemstones and is famed for its
color change from green in daylight to red under incandescent light.
Maw-sit-sit
is one of the more unusual gemstones in the world. It was first
discovered in 1963 and named after a village in northwestern Burma.
Almandine
Garnet, the most common garnet, is dark brownish or purplish red.
Garnet is very popular for its excellent hardness and brilliance.
Melanite is the black variety of the rare andradite garnet. It is sometimes known as titanian andradite.
Amazonite
is a gemstone variety of green microcline, a feldspar mineral. It is
named after the Amazon river in Brazil., though no deposits have been
found there.
Moldavite
is a bottle-green to brown-green gemstone belonging to the tektite
group. It is formed from condensed rock vapors after a meteorite impact.
Amber,
the fossilized, hardened resin of the pine tree, is one of the few
gemstones of organic origin. Most amber is found in the Baltic, where it
formed about 50 million years ago.
Moonstone is a unique stone that reflects light in a distinctive shimmering phenomenon known as adularescence.
Amethyst is the most precious gemstone within the quartz group. Amethyst ranges in color from pale lilac to deep reddish purple.
The
pink form of beryl was named Morganite, after the American banker and
collector J.P. Morgan. A soft pink to violet, morganite belongs to the
same family as emerald .
Ametrine is a form of quartz which occurs in bands of yellow and purple, a combination of the colors of amethyst and citrine.
Moss opal is a milky white opal with unique inclusions of green hornblende in moss-like patterns.
Ammolite is a rare gemstone of organic origin that is fairly new to the market, with commercial mining beginning only in 1981.
Mystic Quartz is the product of a new high tech enhancement process applied to colorless quartz.
Andalusite is a strongly pleiochroic gem, which means that is has different colors when viewed from different directions.
Colorful Mystic Topaz is the product of a high tech enhancement process that is stable and permanent.
Supplies
of andesine-labradorite are quite recent, with the mineral found in a
range of colors, including red, yellow, champagne and green.
Nuumite
is an opaque metamorphic rock with an iridescent play of color. Its
chief constituent minerals are gedrite and anthophyllite,
Apatite, a stone seldom found in jewelry stores, is beloved by collectors for its many different colors and forms.
