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Round|Lab Grown|IGI

1.31ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG831623401

Shape and cutting style on the report: Round brilliant

Certificate IGI LG831623401

Diamond specifications and retailer prices

From $502 AUD
As of November 6, 2026
Save $2,219 AUD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,722 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.31ct lab-grown round diamond

This 1.31ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831623401 or 831623401. Listed at 11 retailers as of October 31, 2026, with prices from $502 to $2,722, a $2,219 spread on the same certified stone. Brilliant Earth lists it at $2,722. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623401
Dimensions7.02 × 6.99 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.02 mm6.99 mm1.31 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623401
Side View
Table 58.0%Crown 35.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

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 6
Current: $2,722 AUD|Low: $371 AUD|High: $2,765 AUD|Avg: $1,076 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$371 AUD
Retailer 10$502 AUD
Retailer 2$629 AUD
Retailer 4$671 AUD
Retailer 6$680 AUD
Retailer 11$732 AUD
Retailer 3$754 AUD
Retailer 5$904 AUD
Retailer 7$1,741 AUD
Retailer 8$2,205 AUD
Brilliant Earth$2,722 AUD

42 data points across 11 retailers

11 retailers$502 AUD to $2,722 AUD

Retailer 1
-
$371 AUD
Price last confirmed 13 days ago
B+
Retailer 2
-
$502 AUD
View
A
Retailer 3
-
$629 AUD
View
A
Retailer 4
-
$671 AUD
View
Retailer 5
-
$680 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$732 AUD
View
A
Retailer 7
-
$754 AUD
View
B+
Retailer 8
-
$904 AUD
View
Retailer 9
-
$1,741 AUD
View
Price last confirmed 12 days ago
B
Retailer 10
-
$2,205 AUD
View
Most Expensive
B
Brilliant Earth
21450031A · Oct 31
$2,722 AUD
$1,870 USD
View
10 more retailers have this diamond
Prices start from $502 AUDSave up to $2,219 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
1.31ct Round
$502 AUD