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Round|Lab Grown|IGI

1.51ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG447099364

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447099364

Diamond specifications and retailer prices

From $1,200 AUD
As of November 5, 2026
Save $5,378 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,578 AUD at MOH London · As of November 3, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447099364 or 447099364. Listed at 10 retailers as of November 3, 2026, with prices from $1,200 to $6,578, a $5,378 spread on the same certified stone. MOH London lists it at $6,578. 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

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447099364
Dimensions7.45 × 7.41 × 4.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.45 mm7.41 mm1.51 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447099364
Side View
Table 59.5%Crown 32.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.5%

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 5
Current: $6,578 AUD|Low: $1,200 AUD|High: $6,667 AUD|Avg: $2,888 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 2$1,200 AUD
Retailer 12$1,316 AUD
Retailer 5$1,766 AUD
Retailer 8$1,976 AUD
Retailer 6$2,047 AUD
Retailer 9$2,047 AUD
Retailer 3$2,393 AUD
Retailer 11$2,886 AUD
Retailer 7$3,247 AUD
Retailer 10$3,923 AUD
Retailer 4$4,584 AUD
MOH London$6,578 AUD

13 data points across 12 retailers

10 retailers$1,200 AUD to $6,578 AUD

A
Cheapest Retailer
-
$1,200 AUD
B+
Retailer 2
-
$1,766 AUD
View
B+
Retailer 3
-
$1,920 AUD
View
B+
Retailer 4
-
$1,976 AUD
View
Final sale: no returns
Retailer 5
-
$2,047 AUD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,047 AUD
View
B
Retailer 7
-
$3,247 AUD
View
B
Retailer 8
-
$3,838 AUD
View
B
Retailer 9
-
$3,923 AUD
View
Most Expensive
B
MOH London
LG447099364 · Nov 3
$6,578 AUD
£3,626 GBP
View
9 more retailers have this diamond
Prices start from $1,200 AUDSave up to $5,378 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
1.51ct Round
$1,200 AUD