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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 $98 AUD
$69 USD
As of November 2, 2026
Save $799 AUD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $897 AUD at MOH London · As of November 1, 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 11 retailers as of November 1, 2026, with prices from $98 to $897, a $799 spread on the same certified stone. MOH London lists it at $897. 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
Colour
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: $897 AUD|Low: $94 AUD|High: $908 AUD|Avg: $368 AUD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5$98 AUD
Retailer 3$217 AUD
Retailer 2$250 AUD
Retailer 6$281 AUD
Retailer 4$314 AUD
Retailer 7$447 AUD
MOH London$897 AUD

43 data points across 7 retailers

11 retailers$98 AUD to $897 AUD

A
Cheapest Retailer
-
$98 AUD
$69 USD
A
Retailer 2
-
$114 AUD
$80 USD
View
Retailer 3
-
$130 AUD
$91 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$130 AUD
$91 USD
View
B+
Retailer 5
-
$217 AUD
£120 GBP
View
B+
Retailer 6
-
$250 AUD
€167 EUR
View
B+
Retailer 7
-
$281 AUD
$197 USD
View
B+
Retailer 8
-
$314 AUD
£173 GBP
View
B
Retailer 9
-
$392 AUD
$275 USD
View
B
Retailer 10
-
$447 AUD
$313 USD
View
Most Expensive
B
MOH London
LG790675907 · Nov 1
$897 AUD
£495 GBP
View
10 more retailers have this diamond
Prices start from $98 AUDSave up to $799 AUD

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
$98 AUD