Emerald|Lab Grown|IGI

1.51ct I VS1 Emerald Lab Grown Diamond

ID • I/VS1 • IGI LG621455172

Shape and cutting style on the report: Emerald cut

Certificate IGI LG621455172

Diamond specifications and retailer prices

From $459 USD
As of October 30, 2026
Save $891 USD (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,350 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown emerald diamond

This 1.51ct lab-grown emerald 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 LG621455172 or 621455172. Listed at 7 retailers as of October 30, 2026, with prices from $459 to $1,350, a $891 spread on the same certified stone. Brilliant Earth lists it at $1,350. 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 angle38.8°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621455172
Dimensions8.45 × 5.23 × 3.40 mm
L/W Ratio1.62
Culet sizeLong
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
8.45 mm5.23 mm1.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621455172
Side View
Table 65.0%Crown 38.8°Girdle: MediumPavilion 39.4°Culet: LNGDepth 65.0%

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 30
Current: $1,350 USD|Low: $459 USD|High: $1,400 USD|Avg: $783 USD|-3.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3$459 USD
Retailer 2$505 USD
Retailer 5$511 USD
Retailer 6$628 USD
Retailer 7$806 USD
Retailer 8$1,027 USD
Retailer 4$1,222 USD
Brilliant Earth$1,350 USD

18 data points across 8 retailers

7 retailers$459 USD to $1,350 USD

A
Cheapest Retailer
-
$459 USD
A
Retailer 2
-
$505 USD
€481 EUR
View
A
Retailer 3
-
$511 USD
View
B+
Retailer 4
-
$628 USD
View
B
Retailer 5
-
$1,027 USD
View
B
Retailer 6
-
$1,222 USD
£962 GBP
View
Most Expensive
B
Brilliant Earth
20918481A · Oct 31
$1,350 USD
View
6 more retailers have this diamond
Prices start from $459 USDSave up to $891 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 Emerald
$459 USD