Serendibite

Rarest gem mineral on earth. True name of this mineral type is boninite green serendibite. For a beginner in gems , this mineral is a mystery. Ancient arabs called Sri Lanka as serendib. 

 

 Hence that is now the name for this gem was derived. Person who owns the honor of discovering and presenting about this gem to the world is Mr A. K. Ananda Kumaraswami. Blueish green color emitting these minerals has refraction indexs of 1.700 , 1.706, 1.734 and 1.738. These are so rare that only 9 such gemstones available in hands at the moment. 

 

 

External appearance has shiny green and blue color can easily be mistaken with gem type Konarupin. 

 

 

But Refraction Index and Chemical Analysis can differentiate the two. Refraction Index volume can range between 1.697 and 1.702. Specific Gravity is between 3.42 and 3.52. Density is between 6.5 and 7.5. Lines inside the gem mineral and shapes outside of it have a very unique and untidy arrangement. Lattice structure is made of triclinic arragements. Chemical Formula is (Ca ,Na)2 (Al.MgFe2TFe3+)6(Si.B.Al)6O20. Scientific grouping is borosilicate. No internal cracks were witnessed in these gems. Only found in Embilipitiya , Sri Lanka and due to very very rare nature , no price has been yet established for this mineral stone.