Gia Cert
Gia Cert
 75 Carat OVAL SHAPE D SI2 LOOSE DIAMOND GIA CERT US $1,975.00 
|
 136 Carat ROUND BRILLIANT I VS2 LOOSE DIAMOND GIA CERT US $8,399.00
|
 93 Carat CUSHION CUT G VS2 LOOSE DIAMOND GIA CERT US $2,765.00
|
 47ct SI1 F GIA Cert Perfect Princess Cut 4mm Diamond US $950.00
|
 91 Carat EMERALD CUT F VS1 LOOSE DIAMOND GIA CERT US $3,479.00
|
 26ct SI1 F GIA Cert Round Brilliant 402mm Diamond US $385.00
|
 53 Carat PRINCESS CUT E VS1 LOOSE DIAMOND GIA CERT US $1,249.00
|
 100 CT H VS1 Round GIA Certd Genuine Loose Diamond US $6,875.00
|
 GIA Cert 101ct Round Brilliant Diamond NATURAL COLOUR US $3,475.96
|
 51 Carat PRINCESS CUT E VS2 LOOSE DIAMOND GIA CERT US $975.00
|
 105 Carat PRINCESS CUT E VS1 LOOSE DIAMOND GIA CERT US $5,449.00
|
 217 Carat G SI1 PEAR SHAPE LOOSE DIAMOND GIA CERT US $10,849.00
|
 200 Carat H SI2 PEAR SHAPE LOOSE DIAMOND GIA CERT US $9,200.00
|
 102 ct FANCY Brownish PINK NATURAL DIAMOND GIA CERT US $7,600.00
|
 100 Carat PRINCESS CUT G VS2 LOOSE DIAMOND GIA CERT US $4,000.00
|
 144 Carat ROUND BRILLIANT K VS2 LOOSE DIAMOND GIA CERT US $6,649.00
|
 110 Carat ROUND BRILLIANT K SI1 LOOSE DIAMOND GIA CERT US $4,269.00
|
 209 Carat ROUND BRILLIANT K VS2 LOOSE DIAMOND GIA CERT US $14,489.00
|
 loose diamond GIA cert 48ct pear shape SI1 I US $650.00
|
 70 Carat PRINCESS CUT F VS1 LOOSE DIAMOND GIA CERT US $1,799.00
|
 120 Carat ROUND BRILLIANT E VS2 LOOSE DIAMOND GIA CERT US $9,849.00
|
 101 Carat ROUND BRILLIANT E SI1 LOOSE DIAMOND GIA CERT US $5,649.00
|
 102 Carat ROUND BRILLIANT E SI1 LOOSE DIAMOND GIA CERT US $5,789.00
|
 186 CT RADIANT GREEN YELLOW LOOSE DIAMOND GIA CERT US $12,500.00
|
 203 Carat F SI1 PEAR SHAPE LOOSE DIAMOND GIA CERT US $11,199.00
|
 loose diamond 71ct pear shape I2 pink brown GIA cert US $700.00
|
 124 Carat RADIANT CUT F VS2 LOOSE DIAMOND GIA CERT US $5,749.00
|
 125 Carat EMERALD CUT G VS1 LOOSE DIAMOND GIA CERT US $5,999.00
|
 loose diamond 78ct radiant I3 fancy green GIA cert US $650.00
|
 50ct 1 2 Carat SI1 H GIA Cert Round Brilliant Diamond US $999.00
|
 GIA CERT PRINCESS CUT DIAMOND 72 CTN I1 US $899.00
|
 GIA Cert 051ct LEO diamond J SI 1 RARE GORGEOUS US $1,730.87
|
 237 CT E SI1 Ex Cut Cushion Natural Loose Diamond 764x713x491mm GIA Cert US $28,054.00
|
 401 CT G SI1 Ex Cut Asscher Natural Loose Diamond 968x937x574mm GIA Cert US $63,779.00
|
Gia Cert
Importance of GIA vs. IGI certification on a diamond?
So we've been looking at rings and I understand that the EGL's standards tend to be a bit more lienient than the GIA. I also understand that the IGI's standards are a bit stricter than the EGL but is still more lienient than the GIA. But in all honesty, is a diamond certified by the IGI really worth that much less than one certified by the GIA? For example, after shopping around what we are seeing is a difference such as:
.75 carat
Color: E
SI 1
GIA cert
$2500
.75 carat
Color: D
VS 2
IGI cert
$2000
Is the certification really that much more worthwhile to justify a $500-$1000 difference in pricing (we've seen such a large jump for another store selling GIA cert diamonds). We're just getting our feet wet and are trying to figure out what we really need to take into consideration and whatnot.
One thing left off on the 2 diamonds is the quality of the cut, that is an important factor. Also with marquis there may be ideal ratios.
IGI grading is supposedly softer than GIA, so equally graded IGI would be worth less, but not by the difference you are seeing. Difference should be about 10%.
For the most traditional marquise-cut diamonds, look for length-to-width ratios between 1.75 and 2.25
2.03 Old European Cut Diamond - GIA CERT!