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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 $198 USD
As of November 5, 2026
Save $946 USD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,144 USD 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 $198 to $1,144, a $946 spread on the same certified stone. MOH London lists it at $1,144. 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
Color
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: $1,144 USD|Low: $198 USD|High: $1,184 USD|Avg: $570 USD|-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$198 USD
Retailer 5$221 USD
Retailer 4$230 USD
Retailer 15$245 USD
Retailer 9$247 USD
Retailer 12$379 USD
Retailer 6$426 USD
Retailer 18$438 USD
Retailer 2$443 USD
Retailer 17$525 USD
Retailer 3$577 USD
Retailer 11$652 USD
Retailer 14$740 USD
Retailer 16$789 USD
Retailer 10$802 USD
Retailer 7$842 USD
Retailer 13$1,040 USD
MOH London$1,144 USD

25 data points across 18 retailers

18 retailers$198 USD to $1,144 USD

A
Cheapest Retailer
-
$198 USD
A
Retailer 2
-
$221 USD
View
Final sale: no returns
A
Retailer 3
-
$230 USD
View
A
Retailer 4
-
$245 USD
View
Retailer 5
-
$247 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$379 USD
View
B+
Retailer 7
-
$426 USD
View
A
Retailer 8
-
$438 USD
View
A
Retailer 9
-
$443 USD
View
B+
Retailer 10
-
$525 USD
View
B+
Retailer 11
-
$577 USD
View
B+
Retailer 12
-
$652 USD
View
B+
Retailer 13
-
$740 USD
View
B+
Retailer 14
-
$789 USD
View
B+
Retailer 15
-
$802 USD
View
B+
Retailer 16
-
$842 USD
View
B
Retailer 17
-
$1,040 USD
View
Most Expensive
B
MOH London
LG794609842 · Nov 5
$1,144 USD
£901 GBP
View
17 more retailers have this diamond
Prices start from $198 USDSave up to $946 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 Round
$198 USD