11/10/2023 0 Comments Green jasper tumbledUsually there are dots, bands, or streaks of white, yellow, orange, and brown. It is unusual to find green chalcedony with markings that are only red in color. Gemstone, small sculptures, small utility items such as seals, aphrodisiac. Green color with red spatter, hardness, conchoidal fracture That is where the name "bloodstone" and some of the gem's popularity are derived.Ī dark green base color adorned with a spatter of bright red.Ģ.6 to 2.7 (higher when heavily included) Some people relate this color pattern to the "Blood of Christ" and give it a religious significance. Specimens with this preferred color scheme and pattern are rare. These are arranged in a spray or a random pattern as if they were blood spatter. On top of that is a light spatter of sharply contrasting and clearly visible blood-red dots. The most highly regarded bloodstone has a solid base color of deep forest green. The splashes of red are concentrations of iron oxide minerals - most likely hematite. Tiny inclusions of chlorite, amphibole, and pyroxene are thought to contribute to the green base colors of bloodstone. The lower hardness and opaque diaphaneity are attributed to included mineral matter of at least several percent on the basis of weight. However, the hardness of bloodstone is usually slightly lower, at about 6.5. It inherits from that a conchoidal fracture and a hardness of approximately 7 on the Mohs hardness scale. Table of ContentsĪs a member of the chalcedony family, bloodstone is a cryptocrystalline quartz. Bloodstone is sometimes referred to as "heliotrope" by European authors and in works of the 18th century and earlier. It has been a popular gemstone for at least two thousand years and has served as the modern birthstone for the month of March since 1912. Bloodstone is a dark green variety of chalcedony adorned with a spatter of bright red.
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