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Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG794609571

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794609571

Diamond specifications and retailer prices

From $281 AUD
As of November 5, 2026
Save $1,346 AUD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,627 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794609571 or 794609571. Listed at 17 retailers as of November 5, 2026, with prices from $281 to $1,627, a $1,346 spread on the same certified stone. MOH London lists it at $1,627. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794609571
Dimensions7.49 × 7.46 × 4.39 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.49 mm7.46 mm1.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794609571
Side View
Table 63.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 58.8%

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 5
Current: $1,627 AUD|Low: $281 AUD|High: $1,669 AUD|Avg: $758 AUD|-2.5%
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
November 6, 2026
Retailer 7$281 AUD
Retailer 3$314 AUD
Retailer 16$326 AUD
Retailer 12$349 AUD
Retailer 8$351 AUD
Retailer 4$610 AUD
Retailer 14$617 AUD
Retailer 10$627 AUD
Retailer 2$636 AUD
Retailer 15$832 AUD
Retailer 9$926 AUD
Retailer 11$1,033 AUD
Retailer 13$1,122 AUD
Retailer 5$1,134 AUD
Retailer 6$1,199 AUD
MOH London$1,627 AUD

30 data points across 16 retailers

17 retailers$281 AUD to $1,627 AUD

A
Cheapest Retailer
-
$281 AUD
A
Retailer 2
-
$314 AUD
View
Final sale: no returns
A
Retailer 3
-
$326 AUD
View
A
Retailer 4
-
$349 AUD
View
Retailer 5
-
$351 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$610 AUD
View
A
Retailer 7
-
$617 AUD
View
A
Retailer 8
-
$627 AUD
View
A
Retailer 9
-
$636 AUD
View
B+
Retailer 10
-
$832 AUD
View
B+
Retailer 11
-
$926 AUD
View
B+
Retailer 12
-
$1,033 AUD
View
B
Retailer 13
-
$1,122 AUD
View
B
Retailer 14
-
$1,134 AUD
View
B+
Retailer 15
-
$1,199 AUD
View
B
Retailer 16
-
$1,281 AUD
View
Most Expensive
B
MOH London
LG794609571 · Nov 5
$1,627 AUD
£880 GBP
View
16 more retailers have this diamond
Prices start from $281 AUDSave up to $1,346 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
$281 AUD