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1.51ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG512205224

Shape and cutting style on the report: Round brilliant

Certificate IGI LG512205224

Diamond specifications and retailer prices

From $860 USD
As of October 30, 2026
Save $4,112 USD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,972 USD at MOH London · As of October 29, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512205224 or 512205224. Listed at 9 retailers as of October 29, 2026, with prices from $860 to $4,972, a $4,112 spread on the same certified stone. MOH London lists it at $4,972. 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205224
Dimensions7.44 × 7.47 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.44 mm7.47 mm1.51 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205224
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.2%

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: Oct 30
Current: $4,972 USD|Low: $860 USD|High: $5,005 USD|Avg: $2,383 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$860 USD
Retailer 3$1,327 USD
Retailer 6$1,444 USD
Retailer 4$1,539 USD
Retailer 9$2,116 USD
Retailer 5$2,435 USD
Retailer 8$2,869 USD
Retailer 7$2,885 USD
Retailer 10$3,446 USD
MOH London$4,972 USD

13 data points across 10 retailers

9 retailers$860 USD to $4,972 USD

A
Cheapest Retailer
-
$860 USD
B+
Retailer 2
-
$1,327 USD
View
B+
Retailer 3
-
$1,444 USD
View
B+
Retailer 4
-
$1,539 USD
View
Retailer 5
-
$1,539 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
$2,435 USD
View
B
Retailer 7
-
$2,869 USD
View
B
Retailer 8
-
$2,885 USD
View
Most Expensive
B
MOH London
LG512205224 · Oct 29
$4,972 USD
£3,915 GBP
View
8 more retailers have this diamond
Prices start from $860 USDSave up to $4,112 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
$860 USD