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Round|Lab Grown|IGI

1.51ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG555273563

Shape and cutting style on the report: Round brilliant

Certificate IGI LG555273563

Diamond specifications and retailer prices

From $370 USD
As of November 3, 2026
Save $1,425 USD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,795 USD at MOH London · As of November 3, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG555273563 or 555273563. Listed at 16 retailers as of November 3, 2026, with prices from $370 to $1,795, a $1,425 spread on the same certified stone. MOH London lists it at $1,795. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555273563
Dimensions7.35 × 7.28 × 4.55 mm
L/W Ratio1.01
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
7.35 mm7.28 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555273563
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.7°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $1,795 USD|Low: $355 USD|High: $1,816 USD|Avg: $821 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 4, 2026
Retailer 13$370 USD
Retailer 5$414 USD
Retailer 3$429 USD
Retailer 6$459 USD
Retailer 14$459 USD
Retailer 11$610 USD
Retailer 2$645 USD
Retailer 7$700 USD
Retailer 16$712 USD
Retailer 9$714 USD
Retailer 15$733 USD
Retailer 10$791 USD
Retailer 12$1,346 USD
Retailer 4$1,476 USD
Retailer 8$1,515 USD
MOH London$1,795 USD

34 data points across 16 retailers

16 retailers$370 USD to $1,795 USD

A
Cheapest Retailer
-
$370 USD
A
Retailer 2
-
$414 USD
View
Final sale: no returns
A
Retailer 3
-
$429 USD
View
A
Retailer 4
-
$459 USD
View
Retailer 5
-
$459 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$610 USD
View
A
Retailer 7
-
$645 USD
View
B+
Retailer 8
-
$700 USD
View
B+
Retailer 9
-
$712 USD
View
B+
Retailer 10
-
$714 USD
View
B+
Retailer 11
-
$733 USD
View
B+
Retailer 12
-
$791 USD
View
B
Retailer 13
-
$1,346 USD
View
B
Retailer 14
-
$1,476 USD
View
B
Retailer 15
-
$1,515 USD
View
Most Expensive
B
MOH London
LG555273563 · Nov 3
$1,795 USD
£1,413 GBP
View
15 more retailers have this diamond
Prices start from $370 USDSave up to $1,425 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
$370 USD