Oligoclase 2.55 ct.
Oligoclase
Belong to the Feldspars group with formula Na(90-70%) Ca(10-30%) (Al, Si)AlSi2 O8, a Sodium Calcium Aluminum silicate. Hardness is 6-6.5.
Similar to the red type this material is more clear and has few hematite inclusions.The color is greenish to almost colorless and comes from Arusha region, Tanzania
Size: 8.5x8.5x6.1 mm.
Weight: 2.55 ct.
CODE#7346
- Origin
- Tanzania