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Radiant|Lab Grown|IGI

1.51ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG833665579

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG833665579

Diamond specifications and retailer prices

From $319 AUD
As of November 5, 2026
Save $1,193 AUD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,512 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG833665579 or 833665579. Listed at 9 retailers as of November 1, 2026, with prices from $319 to $1,512, a $1,193 spread on the same certified stone. MOH London lists it at $1,512. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833665579
Dimensions8.20 × 5.51 × 3.74 mm
L/W Ratio1.49
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.20 mm5.51 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833665579
Side View
Table 63.0%Crown 43.3°Girdle: Slightly ThickPavilion 34.5°Culet: NoneDepth 67.9%

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: $1,512 AUD|Low: $290 AUD|High: $1,613 AUD|Avg: $744 AUD|+3.2%
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
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Retailer 16
November 6, 2026
Retailer 4$290 AUD
Retailer 6$306 AUD
Retailer 5$310 AUD
Retailer 3$319 AUD
Retailer 2$410 AUD
Retailer 9$538 AUD
Retailer 14$546 AUD
Retailer 10$572 AUD
Retailer 8$648 AUD
Retailer 7$799 AUD
Retailer 12$961 AUD
Retailer 15$1,006 AUD
Retailer 11$1,126 AUD
Retailer 16$1,281 AUD
MOH London$1,512 AUD
Retailer 13$1,613 AUD

18 data points across 16 retailers

9 retailers$319 AUD to $1,512 AUD

Retailer 1
-
$306 AUD
Price last confirmed 39 days ago
A
Retailer 2
-
$319 AUD
View
Final sale: no returns
A
Retailer 3
-
$410 AUD
View
A
Retailer 4
-
$538 AUD
View
B+
Retailer 5
-
$572 AUD
View
Retailer 6
-
$1,006 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$1,126 AUD
View
Retailer 8
-
$1,281 AUD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
LG833665579 · Nov 1
$1,512 AUD
£818 GBP
View
8 more retailers have this diamond
Prices start from $319 AUDSave up to $1,193 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 Radiant
$319 AUD