Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds have many inclusions, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.
A gemstone is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments. Certain rocks and occasionally organic materials that are not minerals may also be used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some softer minerals such as brazilianite may be used in jewelry because of their color or luster or other physical properties that have aesthetic value. However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability.
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon. The name sapphire is derived from the Latin word sapphirus, itself from the Greek word sappheiros (σάπφειρος), which referred to lapis lazuli. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. Red corundum stones also occur, but are called rubies rather than sapphires. Pink-colored corundum may be classified either as ruby or sapphire depending on the locale. Commonly, natural sapphires are cut and polished into gemstones and worn in jewelry. They also may be created synthetically in laboratories for industrial or decorative purposes in large crystal boules. Because of the remarkable hardness of sapphires – 9 on the Mohs scale (the third-hardest mineral, after diamond at 10 and moissanite at 9.5) – sapphires are also used in some non-ornamental applications, such as infrared optical components, high-durability windows, wristwatch crystals and movement bearings, and very thin electronic wafers, which are used as the insulating substrates of special-purpose solid-state electronics such as integrated circuits and GaN-based blue LEDs. Sapphire is the birthstone for September and the gem of the 45th anniversary. A sapphire jubilee occurs after 65 years.
Garnets are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.
Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum. Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. The word ruby comes from ruber, Latin for red. The color of a ruby is due to the element chromium.
Peridot, sometimes called chrysolite, is a yellow-green transparent variety of olivine. Peridot is one of the few gemstones that occur in only one color.
Soul music is a popular music genre that originated in African-American communities throughout the United States in the late 1950s and early 1960s. It has its roots in African-American gospel music and rhythm and blues. Soul music became popular for dancing and listening, where U.S. record labels such as Motown, Atlantic and Stax were influential in its proliferation during the Civil Rights Movement. Soul also became popular worldwide, directly influencing rock music and the music of Africa. It had a resurgence in the mid-to late 1990s with the subgenre neo soul, which incorporated modern production elements and hip hop influences.
Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments. Jade is often referred to by either of two different silicate mineral names: nephrite, or jadeite. Nephrite is typically green, although may be yellow, white or black. Jadeite varies from white or near-colorless, through various shades of green, to lavender, yellow, orange, brown and black. Rarely it may be blue. Both of these names refer to their use as gemstones, and each has a mineralogically more specific name. Both the amphibole jade (nephrite) and pyroxene jade are mineral aggregates (rocks) rather than mineral species. Nephrite was deprecated by the International Mineralogical Association as a mineral species name in 1978. The name "nephrite" is mineralogically correct for referring to the rock. Jadeite, is a legitimate mineral species, differing from the pyroxene jade rock. In China, the name jadeite has been replaced with fei cui, the traditional Chinese name for this gem that was in use long before Damour created the name in 1863.
The Misunderstood were an American psychedelic rock band originating from Riverside, California in the mid-1960s. The band moved to London early in their career, and although they recorded only a handful of songs before being forced to disband, they are considered highly influential in the then-emerging genre.
Navaratna is a Sanskrit compound word meaning "nine gems" or "ratnas". Jewellery created in this style has important cultural significance in many southern, and south-eastern Asian cultures as a symbol of wealth, and status, and is claimed to yield talismanic benefits towards health and well-being. The setting of the stones is believed to hold mystical powers tied to the astrology and mythology of Hinduism, Jainism, and Buddhism. The historic origin of the navaratna is tied to the astrological concept of "Navagrahas", or "nine celestial gods" (planets).
Vincent Calvino is a fictional Bangkok-based private eye created by Christopher G. Moore in the Vincent Calvino Private Eye series. Vincent Calvino first appeared in 1992 in Spirit House, the first novel in the series. His latest appearance is in Jumpers, the 16th novel in the series published in October 2016. "Hewn from the hard-boiled Dashiell Hammett/Raymond Chandler model, Calvino is a tough, somewhat tarnished hero with a heart of gold."
Ugly Things (UT) is a music magazine established in 1983, based in La Mesa, California. The editor is Mike Stax. The magazine covers mainly 1960s Beat, garage rock, and psychedelic music. The name Ugly Things is a pun that refers to the band The Pretty Things.
Glenn Ross Campbell is a steel guitarist, most noted for being lead guitarist of cult band The Misunderstood.
"I Can Take You To The Sun" is a song that was composed and recorded by The Misunderstood at Philips Studio in London in 1966. The song is considered a psychedelic music classic.
Gemstone irradiation is a process in which a gemstone is exposed to artificial radiation in order to enhance its optical properties. High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. As a result, the gemstone's color may be significantly altered or the visibility of its inclusions may be lessened.
Richard K. Diran was an American adventurer and gemologist who was also a painter, trader in gemstones, restaurateur, and art dealer. He is best known as the author and photographer of the book The Vanishing Tribes of Burma, which was published in 1997.
Richard W. Hughes is an American gemologist and author, known as an authority on corundum, rubies and sapphires.
John Sinkankas was a Navy officer and aviator, gemologist, gem carver and gem faceter, author of many books and articles on minerals and gemstones, and a bookseller and bibliographer of rare books.
The Star of Adam is an oval-shaped blue star sapphire, currently the largest star sapphire in the world. It weighs 1,404.49 carats. Prior to its discovery in 2015, the Black Star of Queensland, weighing 733 carats (146.6 g), was the largest star sapphire gem in the world.
Aquamarine is a pale-blue to light-green variety of the beryl family, with its name relating to water and sea. The color of aquamarine can be changed by heat, with a goal to enhance its physical appearance. It is the birth stone of March.
