CaratHunter
Plans
Round|Lab Grown|IGI

0.31ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG459129602

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459129602

Diamond specifications and retailer prices

From $243 AUD
$170 USD
As of November 1, 2026
Save $1,164 AUD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,406 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round 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 LG459129602 or 459129602. Listed at 11 retailers as of November 1, 2026, with prices from $243 to $1,406, a $1,164 spread on the same certified stone. MOH London lists it at $1,406. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459129602
Dimensions4.36 × 4.35 × 2.70 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.36 mm4.35 mm0.31 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG459129602
Side View
Table 56.0%Crown 34.6°Girdle: THN-STKPavilion 40.7°Culet: NoneDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $1,406 AUD|Low: $233 AUD|High: $1,424 AUD|Avg: $516 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5$243 AUD
Retailer 8$281 AUD
Retailer 3$300 AUD
Retailer 6$301 AUD
Retailer 9$404 AUD
Retailer 2$535 AUD
Retailer 7$538 AUD
Retailer 4$619 AUD
MOH London$1,406 AUD

43 data points across 9 retailers

11 retailers$243 AUD to $1,406 AUD

A
Cheapest Retailer
-
$243 AUD
$170 USD
A
Retailer 2
-
$281 AUD
$197 USD
View
A
Retailer 3
-
$300 AUD
$210 USD
View
Retailer 4
-
$301 AUD
$211 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$301 AUD
$211 USD
View
B
Retailer 6
-
$535 AUD
£295 GBP
View
B
Retailer 7
-
$538 AUD
$377 USD
View
B
Retailer 8
-
$619 AUD
€413 EUR
View
B
Retailer 9
-
$699 AUD
£386 GBP
View
B
Retailer 10
-
$967 AUD
$678 USD
View
Most Expensive
B
MOH London
LG459129602 · Nov 1
$1,406 AUD
£776 GBP
View
10 more retailers have this diamond
Prices start from $243 AUDSave up to $1,164 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 Round
$243 AUD