Marquise|Lab Grown|IGI

0.78ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG826603903

Certificate IGI LG826603903

Diamond specifications and retailer prices

From $997 USD
As of October 29, 2026
Save $333 USD (25%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,330 USD at Kay Jewelers · As of October 30, 2026
View at Kay Jewelers

About this 0.78ct lab-grown marquise diamond

This 0.78ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG826603903 or 826603903. Listed at 4 retailers as of October 29, 2026, with prices from $997 to $1,330, a $333 spread on the same certified stone. Kay Jewelers lists it at $1,330. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.78
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG826603903
Dimensions9.37 × 4.85 × 3.04 mm
L/W Ratio1.93
Top View
9.37 mm4.85 mm0.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826603903
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $1,330 USD|Low: $997 USD|High: $1,330 USD|Avg: $1,217 USD
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 4$997 USD
Retailer 2$1,090 USD
Kay Jewelers$1,330 USD
Retailer 3$1,330 USD

3 data points across 4 retailers

4 retailers$997 USD to $1,330 USD

B+
Cheapest Retailer
-
$997 USD
B
Retailer 2
-
$1,090 USD
View
B
Retailer 3
-
$1,330 USD
View
Most Expensive
B
Kay Jewelers
259776939 · Oct 30
$1,330 USD
View
3 more retailers have this diamond
Prices start from $997 USDSave up to $333 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.78ct Marquise
$997 USD