Aluminium (IPA: /ˌæljʊˈmɪniəm/, /ˌæljəˈmɪniəm/) or aluminum (/əˈluːmɪnəm/, see "spelling" below) is a silvery white and ductile member of the poor metal group of chemical elements.
Aluminium: An alternate spelling of Aluminum.
Aluminum: An inexpensive, lightweight, silver-white ore with a bluish tinge. Aluminum is primarily found in bauxite, is remarkable for its resistance to oxidation, and is used in many alloys.
Aluminium bronze
Copper-aluminium alloys with up to 13% of aluminium, usually also with other additions such as iron, manganese, nickel and/or silicon. These alloys are strong, hard and have excellent resistance to marine corrosion.
Aluminium
Also known as Aluminum, this is a strong, durable, rustproof and non-magnetic metal which ranges in appearance from silver to dull grey, depending on the surface roughness.
Aluminium (Al) and Beryllium (Be) oxide,
Crystal Habit
One-directional, narrow formation, splits into thin flat pieces.
A copper aluminium phosphate, turquoise is often found in crevices in volcanic rock and in regions where there is a high concentration of copper. The most famous deposits are in the USA, Mexico, Israel, Iran, Afghanistan and China.
Beryllium-aluminium-silicate or Beryl is widely used as a gem material. In its pure form (also known as Goshenite), beryl is colourless. However, stored foreign substances give it different colours and different names.
A mineral (aluminium oxide) that is the hardest mineral other than the diamond; its hardness on the Mohs scale is 9.
It is found in two varieties: ...
Spinel is in the aluminium oxide mineral family, and spinel is found primarily within metamorphic rock, and as a primary mineral in basic rock.
It is a fluorine aluminium silicate and comes in yellow, yellow-brown, honey-yellow, flax, brown, green, blue, light blue, red and pink ... and sometimes it has no colour at all. The topaz.
Blue YAG (Yttrium Aluminium garnet-a synthetic crystalline material)
Refractive index- 1.83
Specific Gravity- 4.6 (approximately) affording it substantial heft as compared to tanzanite. Also it will not display Pleochroism.
Aqua AuraAqua aura is a beautiful iridescent bluish to clear stone that is made by coating clear quartz that with a fine layer of gold (or aluminium or copper).
Tourmalines are mixed crystals of aluminium boron silicate with a complex and changing composition. The Mineral group is a fairly complex one. Even slight changes in the composition cause completely different colours.
Moonstone is the best known gem variety of orthoclase feldspar, being potassium aluminium silicate. It is usually polished as a cabochon, and is often carved with a moon face.
Take a heat resistant glass bowl, line it with aluminium foil (kitchen foil) place your sterling silver on top of the foil. Sprinkle with sodium bicarbonate (baking soda). Depending on how much you are cleaning - about a tablespoon full.
The color is due to the content of iron-aluminium silicate. The inhabitants of the ancient city in Asia Minor, Alabanda, originally named the Almandite garnet where excavations have found garnet jewelry popular in the fourth century BCE.
Belyl stone is a beryllium-aluminium-silicates. In the pure form, beryl is colorless, but the stored foreign substances gives it different colors.
Corundum is the crystalline form of aluminium oxide and one of the rock-forming minerals. Corundum is naturally clear, but can have different colors when impurities are added.
Aluminium is often anodized, as is magnesium, titanium, and tantalum. Anodized metal has a lustrous sheen; the anodizing process can produce colourful surfaces. The Michael Peckitt jewellery we sell is Anodized Aluminium.
Gemstones have different chemical composition as Diamond is an allotrope of Carbon, Ruby is an alloy of Aluminium (Al2 O3 ) while sapphire has Iron as its main element.
Overview: Chrysoberyl is composed of Beryllium Aluminium Oxide. Chrysoberyl is a hard, tough, and durable gem. Chrysoberyl gems are yellow, and some are brown or green.
They were made of aluminium, polished brass, painted tinplate, wood or papier mache. In 1904, a German company incorporated the horn in the casing, and exterior horns more or less disappeared by the 1920s.
All feldspars are types of aluminium silicate, with potassium, calcium, sodium or barium. Varieties include sunstone, moonstone, labradorite and amazonite. From the German ‘feld' field and ‘spath' rock.
Corundum - A gem mineral of crystallised aluminium and oxygen. Ruby and sapphire are the most valuable corundum
Crown - Upper part of a gem ...
Almandine: Fe3Al2(SiO4)3 (iron aluminum silicate)
Spessartine: Mn3Al2 (SiO4)3 (manganese aluminium silicate)
Grossular: Ca3Al2(SiO4)3 (calcium aluminum silicate)
Andradite: Ca3Fe2(SiO4)3 (calcium iron silicate) ...
This is the variety chloromelanite and is characterised by containing a large percentage of iron, replacing in part its aluminium.
 See also: Stone, Crystal, Mineral, Gemstone, Color
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