Ocean jasper
Lapidary material
Also called Orbicular jasper
About it
Silica-rich stone covered in round orbs and rings in green, cream, pink, and red, from the coast of northwest Madagascar. The first deposit could be worked only at low tide.
- Type
- Lapidary material
- Group
- Orbicular jasper
- Hardness (Mohs)
- 6.5–7
- Streak
- white
- Lustre
- waxy, vitreous (glassy)
- Colours
- green, white, pink, yellow, red, with round orbs
- Transparency
- opaque, translucent
- Cleavage and fracture
- none; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.