4,5mm loistava almandiini granaatti
Granaatti
Almandiini / almandine
Alkuperä (todennäköinen) : Afrikka
Paino ( ct noin ) : 0,5
Mitat ( mm noin ) : 4,5 X 4,5 X 2,5
Hionta : viistehiottu
Puhtaus : VVS
Erinomainen Erittäin hyvä Hyvä ”kakkosluokkaa”
Hionta X
Loisto X
Väri X
Ominaista : voimakkasti loistava almandiini granaatti
NÄITÄ VOI TILATA VAIIKA PARIN TAI USEAMPIAKIN
ON VAKIOKOKO
Theoretically, pure Almandite Fe3Al2(SIO4)3 , should have an SG of 4.25 and an RI of 1.78. However, most almandites also contain some pyrope and the composition is frequently gradational. The chemical compostion is somewhat variable and many almandites may also contain varying amounts of spessartite or grossularite. In practice, garnets are usually referred to as almandite if they have an SG over 3.95 and an RI greater than 1.78. The color of almandite is usually dark toned with a more intense red inclining to red violet.Known Facts Color Key: Dark toned with a more intense red inclining to red violet. Refractive Index:: 1.78 - 1.81 Chemical Composition: Fe3Al2(SIO4)3 Hardness: 7.5 Density: 3.95 - 4.20 Crystal Group: Cubic Ocurrence: USA, Sri Lanka, Brazil, Pakistan, Burma, Madagascar, Austria, India, Mozambique, Scotland.
hakusanoja:granaatti,briljantti,pyöreä,almandiini,jalokivi,jalokivet
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