Round|Lab Grown|IGI

1.51ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG557211894

Shape and cutting style on the report: Round brilliant

Certificate IGI LG557211894

Diamond specifications and retailer prices

From $359 USD
As of October 29, 2026
Save $1,111 USD (76%) vs most expensive(unlock to see where)
38 retailers carry this diamond
Most expensive: $1,746 USD at MOH London · As of October 21, 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 LG557211894 or 557211894. Listed at 38 retailers as of October 29, 2026, with a 309% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557211894
Dimensions7.42 × 7.40 × 4.49 mm
L/W Ratio1.00
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
7.42 mm7.40 mm1.51 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557211894
Side View
Table 60.0%Crown 33°GirdlePavilion 41.3°Culet: NoneDepth 60.6%

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: Oct 29
Current: $1,746 USD|Low: $400 USD|High: $1,758 USD|Avg: $821 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$402 USD
Retailer 10$445 USD
Retailer 8$675 USD
Retailer 4$693 USD
Retailer 11$696 USD
Retailer 3$699 USD
Retailer 9$713 USD
Retailer 5$767 USD
Retailer 7$850 USD
Retailer 2$1,304 USD
MOH London$1,746 USD

34 data points across 11 retailers

38 retailers$359 USD to $1,470 USD

Retailer 1
-
$344 USD
Price last confirmed 29 days ago
Retailer 2
-
$344 USD
View
Price last confirmed 26 days ago
Retailer 3
-
$359 USD
View
Price last confirmed 23 days ago
A
Retailer 4
-
$359 USD
View
Retailer 5
-
$359 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$359 USD
View
Price last confirmed 15 days ago
Retailer 7
-
$359 USD
View
Price last confirmed 21 days ago
A
Retailer 8
-
$402 USD
View
Final sale: no returns
Retailer 9
-
$416 USD
View
Price last confirmed 14 days ago
Retailer 10
-
$416 USD
View
Price last confirmed 27 days ago
Retailer 11
-
$416 USD
View
Price last confirmed 31 days ago
Retailer 12
-
$416 USD
View
Price last confirmed 24 days ago
Retailer 13
-
$445 USD
View
Price last confirmed 10 days ago
Retailer 14
-
$445 USD
View
Price last confirmed 20 days ago
Retailer 15
-
$445 USD
View
Price last confirmed 12 days ago
Retailer 16
-
$445 USD
View
Price last confirmed 23 days ago
Retailer 17
-
$445 USD
View
Price last confirmed 31 days ago
Retailer 18
-
$445 USD
View
Price last confirmed 26 days ago
A
Retailer 19
-
$445 USD
View
Retailer 20
-
$445 USD
View
Price last confirmed 21 days ago
Retailer 21
-
$445 USD
View
Price last confirmed 21 days ago
A
Retailer 22
-
$486 USD
HK$3,800 HKD
View
B+
Retailer 23
-
$675 USD
View
B+
Retailer 24
-
$693 USD
£545 GBP
View
B+
Retailer 25
-
$696 USD
View
B+
Retailer 26
-
$699 USD
View
B+
Retailer 27
-
$713 USD
View
B+
Retailer 28
-
$767 USD
ZAR 12,385 ZAR
View
B+
Retailer 29
-
$850 USD
View
B
Retailer 30
-
$1,304 USD
View
Retailer 31
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$1,429 USD
View
Price last confirmed 43 days ago
Retailer 32
-
$1,429 USD
View
Price last confirmed 26 days ago
Retailer 33
-
$1,429 USD
View
Price last confirmed 12 days ago
B
Retailer 34
-
$1,429 USD
View
Retailer 35
-
$1,429 USD
View
Price last confirmed 30 days ago
B
Retailer 36
-
$1,429 USD
View
B
Retailer 37
-
$1,470 USD
View
Most Expensive
MOH London
LG557211894 · Oct 21
$1,746 USD
£1,375 GBP
View
Price last confirmed 12 days ago
37 more retailers have this diamond
Prices start from $359 USDSave up to $1,111 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