奥地利 紅寶石 黄铁矿 石墨
Corundum (Variety: Ruby) with Graphite and Pyrite 刚玉（红宝石品种）伴石墨和黄铁矿 English Description Minerals: Corundum (Variety: Ruby) – Al₂O₃, Graphite – C, Pyrite – FeS₂ Locality: Amstall, Mühldorf, Krems-Land District, Lower Austria, Austria Dimensions: 5.60 cm x 4.95 cm x 3.35 cm Weight: 95.09 grams Description: This specimen features well-formed ruby crystals embedded in a matrix of graphite…