CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG555273800

Shape and cutting style on the report: Round brilliant

Certificate IGI LG555273800

Diamond specifications and retailer prices

From $359 USD
As of November 1, 2026
Save $1,378 USD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,737 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 LG555273800 or 555273800. Listed at 16 retailers as of November 1, 2026, with prices from $359 to $1,737, a $1,378 spread on the same certified stone. MOH London lists it at $1,737. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555273800
Dimensions7.45 × 7.37 × 4.45 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
7.45 mm7.37 mm1.51 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555273800
Side View
Table 60.5%Crown 32.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.0%

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 1
Current: $1,737 USD|Low: $359 USD|High: $1,758 USD|Avg: $830 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
November 2, 2026
Retailer 10$359 USD
Retailer 13$400 USD
Retailer 11$445 USD
Retailer 4$486 USD
Retailer 7$595 USD
Retailer 3$696 USD
Retailer 12$699 USD
Retailer 9$713 USD
Retailer 2$767 USD
Retailer 6$850 USD
Retailer 8$1,304 USD
Retailer 5$1,470 USD
MOH London$1,737 USD

25 data points across 13 retailers

16 retailers$359 USD to $1,737 USD

A
Cheapest Retailer
-
$359 USD
A
Retailer 2
-
$400 USD
View
Final sale: no returns
A
Retailer 3
-
$416 USD
View
Retailer 4
-
$445 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$445 USD
View
A
Retailer 6
-
$486 USD
HK$3,800 HKD
View
A
Retailer 7
-
$595 USD
View
B+
Retailer 8
-
$696 USD
View
B+
Retailer 9
-
$699 USD
View
B+
Retailer 10
-
$713 USD
View
B+
Retailer 11
-
$767 USD
ZAR 12,385 ZAR
View
B+
Retailer 12
-
$850 USD
View
B
Retailer 13
-
$1,304 USD
View
B
Retailer 14
-
$1,429 USD
View
B
Retailer 15
-
$1,470 USD
View
Most Expensive
B
MOH London
LG555273800 · Nov 3
$1,737 USD
£1,368 GBP
View
15 more retailers have this diamond
Prices start from $359 USDSave up to $1,378 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
$359 USD