ALL center stones in engagement rings in RINGBOW are certified with GIA reports
RINGBOW provides customized service to our customers and find out your unique engagement ring with a GIA center stone. Explore more on us to discover the most desirable and perfect diamond for you on your big day!The Gemological Institute Of America(GIA) established in 1931. GIA is the world's most respected gemological laboratory and provides laboratory services of diamonds, colored stones and pearls. The four factors that characterize a faceted diamond include color, clarity, cut and carat weight.
RINGBOW’s 4C Standard
Color
RINGBOW selects and uses diamond color from D to K. According to the GIA color grading system, from D(colorless) to Z(light yellow or brown).
Clarity
RINGBOW selects and uses diamond clarity from IF to VS/SI. The GIA graded diamond clarity from FL(Flawless) to I3(Included).
Cut
RINGBOW uses diamonds cut of Excellent and Very Good only. The GIA Diamond Cut Scale for standard round brilliant diamonds in the D-to-Z diamond color range contains 5 grades ranging from Excellent to Poor and is the definitive scale for classifying diamond cuts.
Carat weight
A metric “carat” is defined as 200 milligrams. RINGBOW is willing to help customers to figure out your significant diamond with specific carat weight and its semi mounting ring. The carat weight of diamond starting from 0.30ct to 1.50ct. Please contact us if you wish to have a diamond that is weighted more than 1.50ct. Under the same condition of other 4C's factors, the price of diamond increases while the carat weight increases since larger diamonds are rarer and more desirable.
