Emerald|Lab Grown|IGI

2.56ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG789628731

Shape and cutting style on the report: Emerald cut

Certificate IGI LG789628731

Diamond specifications and retailer prices

From $477 USD
As of October 30, 2026
Save $3,443 USD (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,920 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.56ct lab-grown emerald diamond

This 2.56ct lab-grown emerald sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG789628731 or 789628731. Listed at 15 retailers as of October 29, 2026, with prices from $477 to $3,920, a $3,443 spread on the same certified stone. Brilliant Earth lists it at $3,920. 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

2.56
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789628731
Dimensions9.29 × 6.30 × 4.28 mm
L/W Ratio1.47
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.29 mm6.30 mm2.56 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789628731
Side View
Table 70.0%Crown 31.9°Girdle: STK-THKPavilion 37.6°Culet: LargeDepth 67.9%

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: $3,920 USD|Low: $458 USD|High: $4,410 USD|Avg: $1,360 USD|-3.0%
Brilliant Earth
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
October 30, 2026
Retailer 11$477 USD
Retailer 13$533 USD
Retailer 5$534 USD
Retailer 4$591 USD
Retailer 14$591 USD
Retailer 9$730 USD
Retailer 6$868 USD
Retailer 15$922 USD
Retailer 2$981 USD
Retailer 10$1,589 USD
Retailer 3$1,900 USD
Retailer 7$1,929 USD
Retailer 12$2,076 USD
Retailer 8$2,183 USD
Brilliant Earth$3,920 USD

41 data points across 15 retailers

15 retailers$477 USD to $3,920 USD

A
Cheapest Retailer
-
$477 USD
A
Retailer 2
-
$533 USD
View
Final sale: no returns
A
Retailer 3
-
$534 USD
View
Retailer 4
-
$591 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$591 USD
View
A
Retailer 6
-
$730 USD
View
B+
Retailer 7
-
$868 USD
View
B+
Retailer 8
-
$922 USD
View
B+
Retailer 9
-
$981 USD
£772 GBP
View
B
Retailer 10
-
$1,589 USD
View
B
Retailer 11
-
$1,900 USD
View
B
Retailer 12
-
$1,929 USD
View
B
Retailer 13
-
$2,076 USD
View
B
Retailer 14
-
$2,183 USD
£1,719 GBP
View
Most Expensive
B
Brilliant Earth
21067411A · Oct 29
$3,920 USD
View
14 more retailers have this diamond
Prices start from $477 USDSave up to $3,443 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
2.56ct Emerald
$477 USD