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Round|Lab Grown|IGI

1.30ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG451056225

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056225

Diamond specifications and retailer prices

From $881 AUD
As of November 5, 2026
Save $3,848 AUD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,730 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056225 or 451056225. Listed at 11 retailers as of November 5, 2026, with prices from $881 to $4,730, a $3,848 spread on the same certified stone. MOH London lists it at $4,730. 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

1.30
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056225
Dimensions6.96 × 7.01 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.96 mm7.01 mm1.30 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056225
Side View
Table 59.0%Crown 36.4°Girdle: THN-MEDPavilion 41.6°Culet: NoneDepth 62.6%

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 5
Current: $4,730 AUD|Low: $846 AUD|High: $4,806 AUD|Avg: $1,947 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5$881 AUD
Retailer 8$986 AUD
Retailer 2$1,071 AUD
Retailer 6$1,093 AUD
Retailer 3$1,279 AUD
Retailer 7$1,673 AUD
Retailer 9$1,726 AUD
Retailer 4$2,711 AUD
Retailer 10$2,924 AUD
MOH London$4,730 AUD

21 data points across 10 retailers

11 retailers$881 AUD to $4,730 AUD

A
Cheapest Retailer
-
$881 AUD
B+
Retailer 2
-
$986 AUD
View
Final sale: no returns
B+
Retailer 3
-
$987 AUD
View
B+
Retailer 4
-
$1,071 AUD
View
B+
Retailer 5
-
$1,093 AUD
View
Retailer 6
-
$1,093 AUD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$1,279 AUD
View
B
Retailer 8
-
$1,673 AUD
View
B
Retailer 9
-
$2,711 AUD
View
B
Retailer 10
-
$2,873 AUD
View
Most Expensive
B
MOH London
LG451056225 · Nov 5
$4,730 AUD
£2,607 GBP
View
10 more retailers have this diamond
Prices start from $881 AUDSave up to $3,848 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
1.30ct Round
$881 AUD