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Round|Lab Grown|IGI

1.51ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG770653207

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770653207

Diamond specifications and retailer prices

From $197 USD
As of November 1, 2026
Save $943 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,140 USD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770653207 or 770653207. Listed at 14 retailers as of November 1, 2026, with prices from $197 to $1,140, a $943 spread on the same certified stone. MOH London lists it at $1,140. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770653207
Dimensions7.48 × 7.47 × 4.38 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
7.48 mm7.47 mm1.51 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770653207
Side View
Table 63.0%Crown 32.9°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 58.6%

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 1
Current: $1,140 USD|Low: $189 USD|High: $1,154 USD|Avg: $580 USD
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 1, 2026
Retailer 10$197 USD
Retailer 3$220 USD
Retailer 15$228 USD
Retailer 4$244 USD
Retailer 12$244 USD
Retailer 13$424 USD
Retailer 2$448 USD
Retailer 5$573 USD
Retailer 14$576 USD
Retailer 11$780 USD
Retailer 16$784 USD
Retailer 9$787 USD
Retailer 6$796 USD
Retailer 8$892 USD
Retailer 7$1,048 USD
MOH London$1,140 USD

19 data points across 16 retailers

14 retailers$197 USD to $1,140 USD

A
Cheapest Retailer
-
$197 USD
A
Retailer 2
-
$220 USD
View
Final sale: no returns
A
Retailer 3
-
$228 USD
View
Retailer 4
-
$244 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$244 USD
View
B+
Retailer 6
-
$424 USD
View
A
Retailer 7
-
$448 USD
€427 EUR
View
A
Retailer 8
-
$573 USD
View
A
Retailer 9
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$576 USD
View
A
Retailer 10
-
$780 USD
View
A
Retailer 11
-
$784 USD
View
A
Retailer 12
-
$787 USD
View
A
Retailer 13
-
$796 USD
SGD 1,076 SGD
View
Most Expensive
A
MOH London
LG770653207 · Nov 1
$1,140 USD
£898 GBP
View
13 more retailers have this diamond
Prices start from $197 USDSave up to $943 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
$197 USD