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The karambit or kerambit (as used in Indonesian), kurambik or karambiak (both from the Minangkabau language) is a small curved knife resembling a claw. It is most closely associated with the Minangkabau people of West Sumatra , Indonesia , but is also found throughout other ethnic groups in Southeast Asia .
Females: The upper forewing has a yellow discal patch above the blue area. The upper hindwing blue area is small and reduced to discal quadrate spots in 3 and 4. The females resemble those of the common gem (P. hewitsoni) but with yellow spots on the upper hindwing. The males of the blue gem are bluer than the common gem which is greener. [4]
In South American folklore, the carbuncle is a small elusive animal containing a mirror, shining gemstone or riches like gold. [4] [5] The description of the carbuncle vary, some saying it looks like a firefly in the night, or like having a bivalve-like shell and maize ear shape. [4]
Pattern welding is a practice in sword and knife making by forming a blade of several metal pieces of differing composition that are forge-welded together and twisted and manipulated to form a pattern. [1]
Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.
Lapidary (from the Latin lapidarius) is the practice of shaping stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameos), and faceted designs. A person who practices lapidary techniques of cutting, grinding, and polishing is known as a lapidary or lapidarist .
The most popular form of sapphire is blue sapphire, which is known for its medium to deep blue colour and strong saturation. Fancy sapphires of various colours are also available. In the United States, blue sapphire tends to be the most popular and most affordable of the three major precious gemstones (emerald, ruby, and sapphire).
The best documented of the illumination tales is that of the King of Ceylon's luminous carbuncle or ruby, first mentioned by the Greek traveler Cosmas Indicopleustes in the 6th century and thereafter described by many travelers, the latest of the 17th century. According to Indicopleustes, it was "as large as a great pine-cone, fiery red, and ...