Search results
Results From The WOW.Com Content Network
Gems & Gemology claims fordite "was first collected at Ford Motor Company in Michigan in the 1940s." [6] The colors were initially dark and muted neutrals, [6] though they still consisted of swirling patterns. [7] The colorful acrylic lacquers of the 1950s and 1960s caused fordite to appear "in bright metallic colors."
The Blue Moon of Josephine is a 12.03 carats (2.406 g) blue diamond, described as flawless by experts, that was discovered in South Africa in January 2014 and was sold at a Sotheby's auction in Geneva in November 2015 at a record-setting price of $48.4 million (43.2 million Swiss francs plus fees). [1]
It is considered as one of the rarest, thus one of the most expensive stones. For nearly a century, it was considered as one of the rarest gemstones in the world. [5] [better source needed] It was first described in 1883 [6] as small, single crystals in loose granitic debris in Mt. Soktui, Nerschinsk district, Adun-Chilon Mountains, Siberia. [7]
5. Red Diamonds. Cost: $5 million per gram Red diamonds are the rarest version of colored diamonds in the world, with no specimens at all being presented to the Gemological Institute of America ...
Colt Peacemaker, showing discoloration from case-hardening. Case-hardening or carburization is the process of introducing carbon to the surface of a low-carbon iron, or more commonly a low-carbon steel object, in order to harden the surface. Iron which has a carbon content greater than ~0.02% is known as steel.
Estimates of production of the Kalashnikov AK-47 and derivative weapons may be exaggerated. Various sources quote figures between 35 and 150 million. [5] In his 2001 book 'The AK-47', Chris McNab claims it is "feasible" that production of the Chinese Type 56 assault rifle – a license-built AK-47 copy – reached 15-20 million. McNab bases ...
The most ubiquitous example of the AK milled receiver. The milled lightning cut on the sides is slanted to the barrel axis. Type 4A/B AKM receiver stamped from a smooth 1.0 mm (0.04 in) sheet of steel supported extensively by pins and rivets. It went into production in 1959. Overall, the most-used design in the construction of AK-series rifles.
The RK 62 was designed in 1957–1962 by a Valmet engineer Lauri Oksanen [3] and is based on the Polish licensed version of the Soviet AK-47 design. The RK 62 uses the same 7.62×39mm cartridge as the AK-47. Between 1965 and 1994 350,000 M62 rifles were produced jointly by Valmet and Sako.