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Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...
Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 v
The player may freely explore an open-world map. Here Aether, the male Traveler, is seen gliding, but the player can switch to other party members. Genshin Impact is an open-world, action role-playing game that allows the player to control one of four interchangeable characters in a party. [4]
Corundum is a crystalline form of aluminium oxide (Al 2 O 3) typically containing traces of iron, titanium, vanadium, and chromium. [3] [4] It is a rock-forming mineral.It is a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. [7]
Limonite is named for the Ancient Greek word λειμών (leimṓn [leː.mɔ̌ːn]), meaning "wet meadow", or λίμνη (límnē), meaning "marshy lake", as an allusion to its occurrence as bog iron ore in meadows and marshes. [6] In its brown form, it is sometimes called brown hematite [7] or brown iron ore. [8]
Aventurine is used for a number of applications, including landscape stone, building stone, aquaria, monuments, and jewelry. Aventurine is a form of quartzite , characterised by its translucency and the presence of platy mineral inclusions that give it a shimmering or glistening effect termed aventurescence .
The Gnostics wore the stone as an amulet for longevity, for wealth and courage, to strengthen the stomach, and to dispel melancholy. [6] In the Middle Ages it was considered useful for animal husbandry. [6] The ancient Greeks and Romans wore the stone to bring renown and favor, to bring endurance, and as a charm against the bite of venomous ...
Pendants made of amber. The oval pendant is 52 by 32 mm (2 by 1 + 1 ⁄ 4 in). Amber necklace from 2000 to 1000 BCE. Amber has been used as jewelry since the Stone Age, from 13,000 years ago. [1] Amber ornaments have been found in Mycenaean tombs and elsewhere across Europe. [67]