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Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG794609842

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794609842

Diamond specifications and retailer prices

From $283 AUD
As of November 5, 2026
Save $1,352 AUD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,635 AUD at MOH London · As of November 5, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794609842 or 794609842. Listed at 18 retailers as of November 5, 2026, with prices from $283 to $1,635, a $1,352 spread on the same certified stone. MOH London lists it at $1,635. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794609842
Dimensions7.52 × 7.48 × 4.43 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm7.48 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794609842
Side View
Table 59.0%Crown 32.8°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.1%

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: $1,635 AUD|Low: $283 AUD|High: $1,691 AUD|Avg: $815 AUD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 8$283 AUD
Retailer 5$316 AUD
Retailer 4$329 AUD
Retailer 15$350 AUD
Retailer 9$353 AUD
Retailer 2$543 AUD
Retailer 6$609 AUD
Retailer 18$626 AUD
Retailer 11$633 AUD
Retailer 17$750 AUD
Retailer 3$824 AUD
Retailer 12$931 AUD
Retailer 14$1,057 AUD
Retailer 16$1,127 AUD
Retailer 10$1,146 AUD
Retailer 7$1,203 AUD
Retailer 13$1,486 AUD
MOH London$1,635 AUD

25 data points across 18 retailers

18 retailers$283 AUD to $1,635 AUD

A
Cheapest Retailer
-
$283 AUD
A
Retailer 2
-
$316 AUD
View
Final sale: no returns
A
Retailer 3
-
$329 AUD
View
A
Retailer 4
-
$350 AUD
View
Retailer 5
-
$353 AUD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$543 AUD
View
B+
Retailer 7
-
$609 AUD
View
A
Retailer 8
-
$626 AUD
View
A
Retailer 9
-
$633 AUD
View
B+
Retailer 10
-
$750 AUD
View
B+
Retailer 11
-
$824 AUD
View
B+
Retailer 12
-
$931 AUD
View
B+
Retailer 13
-
$1,057 AUD
View
B+
Retailer 14
-
$1,127 AUD
View
B+
Retailer 15
-
$1,146 AUD
View
B+
Retailer 16
-
$1,203 AUD
View
B
Retailer 17
-
$1,486 AUD
View
Most Expensive
B
MOH London
LG794609842 · Nov 5
$1,635 AUD
£901 GBP
View
17 more retailers have this diamond
Prices start from $283 AUDSave up to $1,352 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
$283 AUD