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Round|Lab Grown|IGI

1.51ct H VS1 Round Lab Grown Diamond

EX • H/VS1 • IGI LG778657859

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778657859

Diamond specifications and retailer prices

From $206 USD
As of November 3, 2026
Save $984 USD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,190 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778657859 or 778657859. Listed at 20 retailers as of November 3, 2026, with prices from $206 to $1,190, a $984 spread on the same certified stone. MOH London lists it at $1,190. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778657859
Dimensions7.50 × 7.45 × 4.44 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
7.50 mm7.45 mm1.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778657859
Side View
Table 62.0%Crown 33.4°Girdle: THN-MEDPavilion 41.1°Culet: NoneDepth 59.3%

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 3
Current: $1,190 USD|Low: $202 USD|High: $1,460 USD|Avg: $599 USD|+12.6%
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
November 5, 2026
Retailer 7$206 USD
Retailer 3$230 USD
Retailer 16$239 USD
Retailer 13$255 USD
Retailer 8$257 USD
Retailer 12$440 USD
Retailer 4$442 USD
Retailer 9$447 USD
Retailer 15$586 USD
Retailer 11$594 USD
Retailer 10$676 USD
Retailer 2$720 USD
Retailer 14$821 USD
Retailer 5$831 USD
Retailer 6$873 USD
Retailer 17$1,090 USD
MOH London$1,190 USD

37 data points across 17 retailers

20 retailers$206 USD to $1,190 USD

A
Cheapest Retailer
-
$206 USD
Retailer 2
-
$209 USD
View
Price last confirmed 48 days ago
A
Retailer 3
-
$230 USD
View
Final sale: no returns
A
Retailer 4
-
$239 USD
View
A
Retailer 5
-
$255 USD
View
Retailer 6
-
$255 USD
View
Price last confirmed 47 days ago
Retailer 7
-
$257 USD
View
Price last confirmed 11 days ago
A
Retailer 8
-
$440 USD
View
B+
Retailer 9
-
$442 USD
View
A
Retailer 10
-
$447 USD
View
A
Retailer 11
-
$586 USD
View
A
Retailer 12
-
$594 USD
View
B+
Retailer 13
-
$676 USD
View
B+
Retailer 14
-
$720 USD
View
B+
Retailer 15
-
$821 USD
View
Retailer 16
-
$830 USD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
$831 USD
View
B+
Retailer 18
-
$873 USD
View
B+
Retailer 19
-
$1,090 USD
View
Most Expensive
B
MOH London
LG778657859 · Nov 5
$1,190 USD
£937 GBP
View
19 more retailers have this diamond
Prices start from $206 USDSave up to $984 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
$206 USD