Gemstone: Part 2 of 5
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AGATE
Agate is a microcrystalline variety of silica, chiefly chalcedony, characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.
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AMETHYST
Amethyst is a violet variety of quartz often used in jewelry. The name comes from the Ancient Greek ἀ a- ("not") and μέθυστος methustos ("intoxicated"), a reference to the belief that the stone protected its owner from drunkenness; the ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication.
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AMMOLITE
Ammolite is a rare and valuable opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is arguably the rarest gemstone on earth, rivaling the rarity of such gemstones as alexandrite and red diamonds. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral that makes up nacreous pearls.
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AXINITE
Axinite is a brown to violet-brown, or reddish-brown bladed group of minerals composed of calcium aluminium boro-silicate, (Ca,Fe,Mn)3Al2BO3Si4O12OH. Axinite is pyroelectric and piezoelectric.
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BENITOITE
Benitoite is a rare blue barium titanium silicate mineral, found in hydrothermally altered serpentinite. Benitoite fluoresces under short wave ultraviolet light, appearing bright blue to bluish white in color. Benitoite occurs in a number of sites, but gemstone quality material has only been found in California. It is California's official state gem.
Download Benitoite | Download CC Free
BONE
Bone is made up of several minerals and is used in jewelry making.
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HEMATITE
Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. Huge deposits of hematite are found in banded iron formations. Grey hematite is typically found in places where there has been standing water or mineral hot springs, such as those in Yellowstone National Park in the United States. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity.
Download Hematite | Download CC Free
IOLITE
This gemstone is called the gemstone of the Vikings, Iolite is also very often mistaken for Tanzanite. It derives it's name from the Greek work 'ios' which means violet. This gemstone is bluish violet in color, Iolite with prominent blue color tones resembles blue sapphire and in lighter blue violet shades represents the more expensive, tanzanite.
Download Iolite | Download CC Free
JADE
The English word jade (alternative spellings "jaid", "jadeite") is derived from the Spanish term piedra de ijada or "loin stone", from its reputed efficacy in curing ailments of the loins and kidneys. In some countries, jade is more commonly known as "greenstone."
Download Jade | Download CC Free
VARISCITE
Variscite is a hydrated aluminium phosphate mineral. It is a relatively rare phosphate mineral. It is sometimes confused with turquoise, however, variscite is usually greener in color.
Download Variscite | Download CC Free
Agate is a microcrystalline variety of silica, chiefly chalcedony, characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.
Download Agate | Download CC Free
AMETHYST
Amethyst is a violet variety of quartz often used in jewelry. The name comes from the Ancient Greek ἀ a- ("not") and μέθυστος methustos ("intoxicated"), a reference to the belief that the stone protected its owner from drunkenness; the ancient Greeks and Romans wore amethyst and made drinking vessels of it in the belief that it would prevent intoxication.
Download Amethyst | Download CC Free
AMMOLITE
Ammolite is a rare and valuable opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is arguably the rarest gemstone on earth, rivaling the rarity of such gemstones as alexandrite and red diamonds. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral that makes up nacreous pearls.
Download Ammolite | Download CC Free
AXINITE
Axinite is a brown to violet-brown, or reddish-brown bladed group of minerals composed of calcium aluminium boro-silicate, (Ca,Fe,Mn)3Al2BO3Si4O12OH. Axinite is pyroelectric and piezoelectric.
Download Axinite | Download CC Free
BENITOITE
Benitoite is a rare blue barium titanium silicate mineral, found in hydrothermally altered serpentinite. Benitoite fluoresces under short wave ultraviolet light, appearing bright blue to bluish white in color. Benitoite occurs in a number of sites, but gemstone quality material has only been found in California. It is California's official state gem.
Download Benitoite | Download CC Free
BONE
Bone is made up of several minerals and is used in jewelry making.
Download Bone | Download CC Free
HEMATITE
Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. Huge deposits of hematite are found in banded iron formations. Grey hematite is typically found in places where there has been standing water or mineral hot springs, such as those in Yellowstone National Park in the United States. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. Hematite can also occur without water, however, usually as the result of volcanic activity.
Download Hematite | Download CC Free
IOLITE
This gemstone is called the gemstone of the Vikings, Iolite is also very often mistaken for Tanzanite. It derives it's name from the Greek work 'ios' which means violet. This gemstone is bluish violet in color, Iolite with prominent blue color tones resembles blue sapphire and in lighter blue violet shades represents the more expensive, tanzanite.
Download Iolite | Download CC Free
JADE
The English word jade (alternative spellings "jaid", "jadeite") is derived from the Spanish term piedra de ijada or "loin stone", from its reputed efficacy in curing ailments of the loins and kidneys. In some countries, jade is more commonly known as "greenstone."
Download Jade | Download CC Free
VARISCITE
Variscite is a hydrated aluminium phosphate mineral. It is a relatively rare phosphate mineral. It is sometimes confused with turquoise, however, variscite is usually greener in color.
Download Variscite | Download CC Free
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