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 $219 USD
As of November 5, 2026
Save $820 USD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,039 USD 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 $219 to $1,039, a $820 spread on the same certified stone. MOH London lists it at $1,039. 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
Color
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

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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: $1,039 USD|Low: $199 USD|High: $1,108 USD|Avg: $511 USD|+3.2%
MOH London
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
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Retailer 13
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Retailer 16
November 6, 2026
Retailer 4$199 USD
Retailer 6$210 USD
Retailer 5$213 USD
Retailer 3$219 USD
Retailer 2$282 USD
Retailer 9$370 USD
Retailer 14$375 USD
Retailer 10$393 USD
Retailer 8$445 USD
Retailer 7$549 USD
Retailer 12$660 USD
Retailer 15$691 USD
Retailer 11$774 USD
Retailer 16$880 USD
MOH London$1,039 USD
Retailer 13$1,108 USD

18 data points across 16 retailers

9 retailers$219 USD to $1,039 USD

Retailer 1
-
$210 USD
Price last confirmed 39 days ago
A
Retailer 2
-
$219 USD
View
Final sale: no returns
A
Retailer 3
-
$282 USD
View
A
Retailer 4
-
$370 USD
View
B+
Retailer 5
-
$393 USD
View
Retailer 6
-
$691 USD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$774 USD
View
Retailer 8
-
$880 USD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
LG833665579 · Nov 1
$1,039 USD
£818 GBP
View
8 more retailers have this diamond
Prices start from $219 USDSave up to $820 USD

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
$219 USD