Emerald|Lab Grown|IGI

1.00ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG488128326

Shape and cutting style on the report: Emerald cut

Certificate IGI LG488128326

Diamond specifications and retailer prices

From $136 USD
As of November 1, 2026
Save $1,276 USD (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,412 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488128326 or 488128326. Listed at 14 retailers as of November 1, 2026, with prices from $136 to $1,412, a $1,276 spread on the same certified stone. MOH London lists it at $1,412. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle22.7°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488128326
Dimensions6.54 × 4.78 × 3.23 mm
L/W Ratio1.37
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.54 mm4.78 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488128326
Side View
Table 57.5%Crown 22.7°Girdle: Slightly ThickPavilion 36.6°Culet: LNGDepth 67.6%

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: Nov 1
Current: $1,412 USD|Low: $131 USD|High: $1,429 USD|Avg: $369 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
November 2, 2026
Retailer 9$136 USD
Retailer 3$153 USD
Retailer 4$158 USD
Retailer 11$169 USD
Retailer 13$169 USD
Retailer 10$225 USD
Retailer 2$287 USD
Retailer 6$300 USD
Retailer 7$321 USD
Retailer 5$415 USD
Retailer 12$544 USD
Retailer 8$574 USD
MOH London$1,412 USD

41 data points across 13 retailers

14 retailers$136 USD to $1,412 USD

A
Cheapest Retailer
-
$136 USD
A
Retailer 2
-
$153 USD
View
Final sale: no returns
A
Retailer 3
-
$158 USD
View
A
Retailer 4
-
$169 USD
View
Retailer 5
-
$169 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$192 USD
View
B+
Retailer 7
-
$225 USD
View
A
Retailer 8
-
$287 USD
View
Retailer 9
-
$300 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$321 USD
View
B+
Retailer 11
-
$415 USD
View
B
Retailer 12
-
$544 USD
View
B
Retailer 13
-
$574 USD
View
Most Expensive
B
MOH London
LG488128326 · Nov 2
$1,412 USD
£1,112 GBP
View
13 more retailers have this diamond
Prices start from $136 USDSave up to $1,276 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
1.00ct Emerald
$136 USD