Stone Grade
Regarding natural stones, unfortunately there is no international standard. But in general stones are graded from A up to AAAAA.
A: Minimum grade
AA: Normal grade
AAA: Good grade
AAAA: Very good grade
AAAAA: The best grade
*「+」is used between grades.
Grade is determined by transparency, color, glitter, clack, inclusion etc but it depends on stone type also.
Meantime special inclusion or clack make the stone unique and only one piece in the world. We recommend that it is better to follow your feeling when you choose.
A: Minimum grade
AA: Normal grade
AAA: Good grade
AAAA: Very good grade
AAAAA: The best grade
*「+」is used between grades.
Grade is determined by transparency, color, glitter, clack, inclusion etc but it depends on stone type also.
Meantime special inclusion or clack make the stone unique and only one piece in the world. We recommend that it is better to follow your feeling when you choose.