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Marquise|Lab Grown|IGI

0.31ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG790675907

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790675907

Diamond specifications and retailer prices

From $69 USD
As of November 2, 2026
Save $560 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $629 USD at MOH London · As of November 2, 2026
View at MOH London

About this 0.31ct lab-grown marquise diamond

This 0.31ct lab-grown marquise sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG790675907 or 790675907. Listed at 12 retailers as of November 2, 2026, with prices from $69 to $629, a $560 spread on the same certified stone. MOH London lists it at $629. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.31
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790675907
Dimensions7.42 × 3.45 × 2.07 mm
L/W Ratio2.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.42 mm3.45 mm0.31 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790675907
Side View
Table 59.0%Crown 32.8°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $629 USD|Low: $66 USD|High: $636 USD|Avg: $259 USD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5$69 USD
Retailer 3$152 USD
Retailer 2$175 USD
Retailer 6$197 USD
Retailer 4$220 USD
Retailer 7$313 USD
MOH London$629 USD

42 data points across 7 retailers

12 retailers$69 USD to $629 USD

A
Cheapest Retailer
-
$69 USD
A
Retailer 2
-
$80 USD
View
Retailer 3
-
$91 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$91 USD
View
Retailer 5
-
$145 USD
View
B+
Retailer 6
-
$152 USD
£120 GBP
View
B+
Retailer 7
-
$175 USD
€167 EUR
View
B+
Retailer 8
-
$197 USD
View
B+
Retailer 9
-
$220 USD
£173 GBP
View
B
Retailer 10
-
$275 USD
View
B
Retailer 11
-
$313 USD
View
Most Expensive
B
MOH London
LG790675907 · Nov 2
$629 USD
£495 GBP
View
11 more retailers have this diamond
Prices start from $69 USDSave up to $560 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.

A
0.31ct Marquise
$69 USD