Copper Species
Aurichalcite - Brochantite Malachite - Chalcopyrite
Galloway Region
Dumfries & Kirkcudbright ...
Mineral Species. We must first consider what is meant by a "mineral species" and find out what relation exists between that subject and chemical composition.
The article illustrates well that the largest crystals of a particular species may not be very large when compared to other mineral species. The following are some examples:
Mineral Largest Crystal Confirmed
Gold ...
Species: A gem species is a mineral that has a definite chemical formula, and has a particular three dimensional structure.
Species
Metallic oxides are responsible for imparting color to this mineral. If not for these impurities present in the crystal structure of corundum, it would be colorless.
Species: Natural Elbaite Tourmaline
Variety: Paraiba
The American Gem Trade Association lab received feedback at its June membership meeting that such nomenclature was unhelpful at best and deceptive at worst.
Species: A gem with distinct characteristics that are well defined.
Species The term used to designate a family of gemstones. For example, corundum is a species that contains the varieties sapphire and ruby. The Quartz family contains amethyst, citrine, and chalcedony, to name a few.
Species
Used in gemology to refer to individual gems that have distinct characteristics which may be defined and verified.
Specific Gravity ...
[edit] Species of Apophyllite
Fluorapophyllite, (K, Na)Ca4Si8O20(F, OH) Â- 8H2O - white, colorless, yellow, green, violet
Hydroxyapophyllite, KCa4Si8O20(OH, F) Â- 8H2O - white, colorless ...
Species of American pearl mussels include the butterfly, elephant ear, heelsplitter, mapleleaf, pimple back, pistol grip, three-ridge pigtoe, and washboard mussels.
Species:
Magnesioaxinite, Ferroaxinite, Manganaxinite, Tinzenite.
Crystal System: ...
A species of gemstone most common in yellowish brown, pink and light to medium dark blue colors. Most blue topaz is heat treated from a colorless or yellow rough
Tourmaline ...
This species has the largest variety of colors of any species known to man. The most popular color is green. "Rubellite", which can easily be mistaken for a ruby, is extraordinarily beautiful.
Several species of the dung beetle, most notably the species Scarabaeus sacer (often referred to as the sacred scarab), enjoyed a sacred status among the ancient Egyptians.
Mineral species which are members of the carbonate class are compounds of a metal or semimetal with the carbonate anion (CO3)2-. In these substances plane triangular (CO3)2- anion groups are linked together by various cations.
A large species of oyster from the Pinctada maxima family, found in the waters off Australia, Indonesia, the Philippines, and Japan.
Some rare species of garnet are known that illustrate the wide range of substitution that the garnet crystal structure can accommodate. They include: ...
Of the gem species enterring the market, zircon is seen more often heat treated than in its natural state.
Blue and colorless zircons do exist in their original state but not in sufficient quantity for commercial purposes.
The mineral species corundum affords a number of gems known by different names because the stones were used as gems before their miner-alogical identity was discovered. Thus the ruby is red corundum and sapphire blue corundum.
Several gem species and varieties discussed in Part II of this book are fairly recent discoveries: tsavorite garnet, tanzanite, and malaya garnet were completely unknown just fifty years ago.
BERYL A gem species. Green Beryl is more commonly known as Emerald. Emeralds blue or blue-green sister in the Beryl family is Aquamarine. Pink Beryl is Morganite.
BEZEL SETTING ...
Beryl: A species of gemstone of which emerald, aquamarine, morganite (light pink) and heliodor (light yellow or golden) are varieties.
Garnet - andradite species
Similar stones
Demantoid may be confused with tsavorite garnet, peridot, emerald, diopside and tourmaline ...
About 10 different species of mussels are nucleated to create pearls. These days, most use Chinese pearl farmers use H. cumingi mussels. The use of H. cumingi increased once farmers began focusing more on quality rather than quantity. However, C.
Oyster: Although 70 species of oysters can produce pearls, most of them belong to the Pinctada family. Below are the three most common oyster types.
Onyx is a species of chalcedony (microcrystalline quartz).
- OPAL
Opals are semi-precious stones that are luminous and iridescent, frequently with inclusions of many colors ("fire").
Collection of ivory has led to the decimation of certain species, especially elephants. Importation and sale of ivory from elephants is illegal in the United States and elsewhere around the globe.
We carry several subspecies of coral. Sponge coral, when polished smooth, has visible pores like a sponge. Bamboo coral grows in segmented branches that resemble bamboo stalks, with beige/brown sections partially covering the black underlayer.
The Garnet group of minerals has 20 different species. The most commonly recognized are Pyrope, Almandite, Spessartite, Grossular and Andradite.
Over 214 ancient plant species have been identified through the DNA found in amber.
Amber jewelry has been discovered from as far back as the Paleolithic Era (18,000 B.C.), and was one of the first traded commercial goods.
This discovery transformed the jewelry world: new varieties, new colors, and new variations on existing species made that decade the most exciting time in the gemstone industry in our century.
Whereas there is generally good agreement on the attributes that define the best gem of a given species, these are not easily quantified (especially for colored stones), resulting in a wide range of prices for similar-appearing goods.
In recent years approximately 100 new mineral species have been described each year, and these descriptions along with reports of physical and optical properties and crystal structure determinations are reported in various mineralogical journals, ...
Opal is a mineral composed of noncrystalline (amorphous) silica (and some water) and is a species of quartz.
Not only do different species of plants have different feelings associated with them, but different plants in the same species have considerable individual variation in personalities between different plants of the same species.
Garnet is the name which can be applied to six similar mineral species, namely almandine, pyrope, spessartine, grossular, andradite and uvarovite. To further complicate matters, many garnets are actually a combination of these minerals.
Agate is a term applied not to a distinct Mineral species, but to an aggregate of various forms of silica, chiefly Chalcedony.
Variety of the Corundum Species
Formed in metamorphic and igneous rocks
Color: Varieties of red
Hardness: 9
Transparency: Transparent to opaque
The most sought after color of the ruby is pure red with a touch of blood, a.k.a. "pigeon's blood" ...
Root corals are actually a coral species all their own - i.e. not roots, but a special kind of coral growth. They are sometimes confused with the foam coral.
Here, larger and more exotic species of saltwater oysters are now being cultivated to produce fabulous pearls of up to 20 millimeters in diameter.
Andradite is one of six gemstone species within the garnet group. It includes several gem varieties, the most notable of which is demantoid, a rare and highly prized green garnet.
Most people think that any type of coral can be used for jewelry, but, in fact, only two species ("Corallium rubrum" and "Corallium japonicum") are used to make the familiar red jewelry.
Dehydration - A tendency for a mineral to lose it's water content, often altering to a different species.
Dendritic - Made up of dendrites, or fern-like branching structures.
Diaphaneity - Synonym for transparency ...
Emerald gemstone is known for its lush green color variety of the beryl mineral species. Mined in Egypt in Cleopatra mines as early as 1700 years ago. The ancient civilizations attributed all kinds of magical qualities to emeralds.
jadeite jade - A semitransparent to opaque mineral species that furnishes the most valuable and desirable jade.
Tourmaline is a group of mineral species. However, it’s the mineral elbaite (named after the island of Elba near Italy’s west coast where it was discovered) that is responsible for almost all of tourmaline’ ...
Legend: It was first discovered to be a new species in 1952 when an unusually dark brown specimen came under scientific scrutiny.
Some important tools to assist you in the identification of species at Mont Saint-Hilaire are the light properties of minerals. In the following tables, you will find the species that do fluoresce or phosphoresce under different lights.
(Isotopes are species of a chemical element that reside in the same place on the periodic table but have different atomic weights and physical properties.) Unlike clear diamonds, ...
Grossular - Grossular gemstones are a species within the Garnet family. This species includes several significant gem varieties such as hessonite, tsavorite, leuco garnet, and hydrogrossular. On Mohs' scale of hardness, it is 3.57- 3.73.
Part of the Zoisite mineral species, Tanzanite is named after the country where is it mined and to date, has been found nowhere else on earth. It is the ultimate prize of a gemstone safari.
One way to identify a crystal species is by taking a refractive index test. Refractive index is the reading of how a crystal separates the spectrum of light.
extinct
An animal species that is extinct has died out. Most animal species that ever existed have gone extinct, including all the dinosaurs.
extinct volcano
An extinct volcano is a volcano that is not likely to erupt again.
Pearls also vary greatly in colour depending on the species of mollusc from which they are formed. While pearls are traditionally thought of as white, they may also be pink, gold, silver, grey, green and black, among other colours.
Both ruby and its sister stone, sapphire, are from the corundum mineral species, but only the red variety is called ruby. All other colored corundums are known as sapphires. Rubies are durable - the second hardest mineral after diamonds.
Classified an extinct species, fossilised mammoth ivory is a legal commodity and can be traded world wide, as it is exempt from the Washington agreement on Endangered Species.
All our Mammoth Ivory is double certificated.
A crypto-crystalline sub-species of quartz. It is generally of a milky brown colour, but there are also rarer blue (blue chalcedony), green (chrysoprase) and orange-red (cornelian) varieties. Very occasionally it may be transparent.
Usually Industry applies several species of agate gemstones primarily to produce jewelries, stationary, crockery and cutlery including paper knives, brooches, pins and inkstands.
COLORED STONE - A gemstone of any species other than diamond. This usage arbitrarily classifies all varieties, but still does not include colored diamonds. This system has, however, proven to be a practicable and satisfactory general classification.
 See also: Mineral, Stone, Color, Crystal, Gemstone
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