Natural Blue diamond Square 0.41 ct polished

Blue diamonds are no longer produced in South Africa. What gives the blue color in diamond? In it's cristalisation period, the molecules of diamond mixes with boron. This blue colored diamond is an exceptionnal example.

Reference	1915
Langerman Color	Blue / Blue
Lab Color	Fancy Blue
Certificate	GIA 12152471
Carat	0.41
Shape	Square
Cut	Radiant
Clarity	VS
Origin	South Africa
Size (mm)	3.81 x 3.88 x 2.98
Price	$53,000 VAT may apply for Europeans Or $10,600 (20% deposit) to reserve it