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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.
The level of mineral purity within the extracted ore was incredibly rare throughout the ancient Greek world and Athens had exclusive access to it. [6] Athens would then use their access to the Laurion mines to direct a majority of the silver to be made into coins that would be used to pay for the famous Athenian navy. [6]
The name sapphire is derived from the Latin word sapphirus, itself from the Greek word sappheiros (σάπφειρος), which referred to lapis lazuli. [2] It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.
Kykeon, ancient Greek drink of various descriptions used at the climax of the Eleusinian Mysteries. Pneuma, a supernatural substance that is present in all souls and sustains life in all breathing living creatures. Thought of as giving cosmic energy through breath. One main components of the parts of the soul in ancient Greek medicine.
Ancient Greek crafts (or the craftsmanship in Ancient Greece) was an important but largely undervalued, economic activity. It involved all activities of manufacturing transformation of raw materials, agricultural or not, both in the framework of the oikos and in workshops of size that gathered several tens of workers.
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 three most important standards of the ancient Greek monetary system were the Attic standard, based on the Athenian drachma of 4.3 grams (2.8 pennyweights) of silver, the Corinthian standard based on the stater of 8.6 g (5.5 dwt) of silver, that was subdivided into three silver drachmas of 2.9 g (1.9 dwt), and the Aeginetan stater or didrachm of 12.2 g (7.8 dwt), based on a drachma of 6.1 g ...
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.