Round|Lab Grown|IGI

1.51ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG555273644

Shape and cutting style on the report: Round brilliant

Certificate IGI LG555273644

Diamond specifications and retailer prices

From $370 USD
As of November 1, 2026
Save $1,145 USD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,796 USD at MOH London · As of October 26, 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 LG555273644 or 555273644. Listed at 15 retailers as of October 31, 2026, with a 310% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555273644
Dimensions7.37 × 7.33 × 4.50 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
7.37 mm7.33 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555273644
Side View
Table 56.5%Crown 35°GirdlePavilion 40.2°Culet: NoneDepth 61.3%

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 1
Current: $1,796 USD|Low: $295 USD|High: $1,816 USD|Avg: $843 USD|-1.0%
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
November 2, 2026
Retailer 11$370 USD
Retailer 4$414 USD
Retailer 13$429 USD
Retailer 3$459 USD
Retailer 12$459 USD
Retailer 6$700 USD
Retailer 9$700 USD
Retailer 15$712 USD
Retailer 2$715 USD
Retailer 14$733 USD
Retailer 8$792 USD
Retailer 10$1,346 USD
Retailer 5$1,476 USD
Retailer 7$1,515 USD
MOH London$1,796 USD

35 data points across 15 retailers

15 retailers$370 USD to $1,515 USD

A
Cheapest Retailer
-
$370 USD
A
Retailer 2
-
$414 USD
View
Final sale: no returns
A
Retailer 3
-
$429 USD
View
Retailer 4
-
$459 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$459 USD
View
B+
Retailer 6
-
$700 USD
View
B+
Retailer 7
-
$700 USD
View
B+
Retailer 8
-
$712 USD
View
B+
Retailer 9
-
$715 USD
£563 GBP
View
B+
Retailer 10
-
$733 USD
View
B+
Retailer 11
-
$792 USD
ZAR 12,791 ZAR
View
B
Retailer 12
-
$1,346 USD
View
B
Retailer 13
-
$1,476 USD
View
B
Retailer 14
-
$1,515 USD
View
Most Expensive
MOH London
LG555273644 · Oct 26
$1,796 USD
£1,414 GBP
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from $370 USDSave up to $1,145 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