- Perfect girly live wallpaper for Android!- Interactive background-Tap anywhere on the screen and new diamonds will appear!- Full support for landscape mode and home-screen switching!
Enjoy this lovely, free and useful live wallpaper!
Installation instructions:Home -> Menu -> Wallpapers -> Live Wallpapers
Jewelry is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets.
With some exceptions, such as medical alert bracelets or military dog tags, jewelry normally has no other purpose than to look appealing, but humans have been producing it for a long time – with 100,000-year-old beads made from Nassarius shells is the oldest known jewelry.
Jewelry may be made from a wide range of materials, but gemstones, precious metals, beads and shells have been widely used. Depending on the culture and times jewelry may be appreciated as a status symbol, for its material properties, its patterns, or for meaningful symbols. Jewelry has been made to adorn nearly every body part, from hairpins to toe rings.
The word jewelry itself is derived from the word jewel, which was anglicized from the Old French ‘jouel’, and beyond that, to the Latin word ‘jocale’, meaning plaything. In British English the spelling can be written as jewelery or jewellery.
In mineralogy, diamond is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions. Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.
Diamond has remarkable optical characteristics. Because of its extremely rigid lattice, it can be contaminated by very few types of impurities, such as boron and nitrogen. Combined with wide transparency, this results in the clear, colorless appearance of most natural diamonds. Small amounts of defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (lattice defects), green (radiation exposure), purple, pink, orange or red. Diamond also has relatively high optical dispersion (ability to disperse light of different colors), which results in its characteristic luster. Excellent optical and mechanical properties, combined with efficient marketing, make diamond the most popular gemstone.
Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers (87 to 120 mi) in the Earth mantle. Carbon-containing minerals provide the carbon source, and the growth occurs over periods from 1 billion to 3.3 billion years (25% to 75% of the age of the Earth). Diamonds are brought close to the Earth surface through deep volcanic eruptions by a magma, which cools into igneous rocks known as kimberlites and lamproites. Diamonds can also be produced synthetically in a high-pressure high-temperature process which approximately simulates the conditions in the Earth mantle.
