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Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6 (PO 4) 4 8 ·4H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.
Native American jewelry. Native American jewelry refers to items of personal adornment, whether for personal use, sale or as art; examples of which include necklaces, earrings, bracelets, rings and pins, as well as ketohs, wampum, and labrets, made by one of the Indigenous peoples of the United States. Native American jewelry normally reflects ...
Nazar (amulet) Eye beads or nazars – amulets against the evil eye – for sale in a shop. An eye bead or naẓar (from Arabic نَظَر [ˈnaðˤar], meaning 'sight', 'surveillance', 'attention', and other related concepts) is an eye-shaped amulet believed by many to protect against the evil eye. The term is also used in Azerbaijani ...
The manufacture of ostrich eggshell beads varies a bit from region to region, but generally follows similar steps. First, an ostrich egg is hit with a hammerstone, or an eggshell fragment is found. Then, bead blanks are selected from those fragments. The next two steps can be performed in either order depending on the group making the beads ...
Copper aureus (a variety of copper containing up to 3% Au); Copper is silver (a type of copper containing up to 7.5% Ag). Deposits and mines. The mines of the Keweenaw native copper deposits of Upper Michigan were major copper producers in the 19th and early 20th centuries, and are the largest deposits of native copper in the world.
Turquoise Color coordinates; Hex triplet #40E0D0: sRGB B (r, g, b) (64, 224, 208) HSV (h, s, v) (174°, 71%, 88%) CIELCh uv (L, C, h) (81, 59, 179°) Source: X11: ISCC–NBS descriptor: Brilliant bluish green: B: Normalized to [0–255] (byte)
Tiger's eye (also called tiger eye) is a chatoyant gemstone that is usually a metamorphic rock with a golden to red-brown colour and a silky lustre.As members of the quartz group, tiger's eye and the related blue-coloured mineral hawk's eye gain their silky, lustrous appearance from the parallel intergrowth of quartz crystals and altered amphibole fibres that have mostly turned into limonite.
Zazzle. Zazzle is an American online marketplace that allows designers and customers to create their own products with independent manufacturers (clothing, posters, etc.), as well as use images from participating companies. Zazzle has partnered with many brands to amass a collection of digital images from companies like Disney, Warner Brothers ...
Baily's beads. The Baily's beads, diamond ring or more rarely double diamond ring effects, [1] are features of total and annular solar eclipses. Although caused by the same phenomenon, they are distinct events during these types of solar eclipses. As the Moon covers the Sun during a solar eclipse, the rugged topography of the lunar limb allows ...
Verdigris in Prague Underground. Verdigris is a collective term for copper acetate, whose chemical varieties produce different hues. The technical literature is inconsistent in describing these variations. Some sources refer to "neutral verdigris" as copper (II) acetate monohydrate ( Cu (CH3CO2)2· (H2O)) and to "blue verdigris" as Cu (CH3CO2)2 ...