Welcome to TONIA jewel & art gallery

00357-25355244 / 00357-99645990

Diamond Guide

Know your Diamond QualitySince diamonds are widely used in our creations, it is essential that any prospect customer should know how a diamond is graded. Please note that for all of our jewellery we provide a certificate indicating the characteristics of the metals and stones used.

Diamonds are characterized by three distinctive factors: 1. Carat, 2. Colour, 3. Cut and Clarity.

1. Carat

Carat is the weight of the diamond. 1ct=1 carat=0,2 grams

2.Colour:Comparison of Colour Grading Systems.


GIA

HRD

UK
COLOURLESS D Exceptional White + Finest White
E Exceptional White
F Rare White +  Fine White
NEAR
COLOURLESS
G
H White White
I Slightly Tinted White  Commercial white
J Top Silver Cape
SLIGHTLY
TINTED
K Tinted White 
L Silver Cape
M Tinted Light Cape
N
VERY
LIGHT
YELLOW
O Cape
P
Q
LIGHT
YELLOW
R
S
T Dark Cape
YELLOW U
V

3. Cut

Most diamonds are cut with 58 facets, and a good cut, or make, has more scintillation, more sparkle. It is the work of a master cutter that allows the diamond to be cut in such a way as to permit the maximum amount of light to be reflected through the diamond. The most popular diamonds cuts are the following

Round Brilliant Oval
Marquise Pear
Heart Emerald
Baquette Princess

3. Clarity Grading Scale

Pure Very Very Small Inclusion Very Small Inclusion Small Inclusion Included
Internally Flawless VVS1 VVS2 VS1 VS2 SI1 SI2 I1 I2 I3