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Emerald|Lab Grown|IGI

2.56ct E SI1 Emerald Lab Grown Diamond

EX • E/SI1 • IGI LG660483268

Shape and cutting style on the report: Emerald cut

Certificate IGI LG660483268

Diamond specifications and retailer prices

From £255 GBP
$340 USD
As of October 30, 2026
Save £2,553 GBP (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,808 GBP 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660483268 or 660483268. Listed at 19 retailers as of October 29, 2026, with prices from £255 to £2,808, a £2,553 spread on the same certified stone. Brilliant Earth lists it at £2,808. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660483268
Dimensions9.17 × 6.44 × 4.42 mm
L/W Ratio1.42
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.17 mm6.44 mm2.56 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660483268
Side View
Table 64.0%Crown 34.3°Girdle: MED-STKPavilion 38.3°Culet: LNGDepth 68.6%

Caratlytics Score

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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: £2,808 GBP|Low: £255 GBP|High: £2,929 GBP|Avg: £1,075 GBP|-4.1%
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
October 29, 2026
Retailer 11£255 GBP
Retailer 13£286 GBP
Retailer 12£317 GBP
Retailer 5£421 GBP
Retailer 10£424 GBP
Retailer 4£502 GBP
Retailer 2£631 GBP
Retailer 9£930 GBP
Retailer 3£1,228 GBP
Retailer 8£1,348 GBP
Retailer 6£1,374 GBP
Retailer 7£2,268 GBP
Brilliant Earth£2,808 GBP

33 data points across 13 retailers

19 retailers£255 GBP to £2,808 GBP

Retailer 1
-
£255 GBP
$340 USD
Price last confirmed 37 days ago
A
Retailer 2
-
£255 GBP
$340 USD
View
A
Retailer 3
-
£286 GBP
$381 USD
View
Final sale: no returns
Retailer 4
-
£313 GBP
$417 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
£317 GBP
$422 USD
View
A
Retailer 6
-
£317 GBP
$422 USD
View
B+
Retailer 7
-
£421 GBP
$561 USD
View
A
Retailer 8
-
£424 GBP
$565 USD
View
B+
Retailer 9
-
£597 GBP
$795 USD
View
B+
Retailer 10
-
£631 GBP
View
B
Retailer 11
-
£930 GBP
$1,238 USD
View
B
Retailer 12
-
£1,125 GBP
$1,498 USD
View
B
Retailer 13
-
£1,228 GBP
$1,636 USD
View
B
Retailer 14
-
£1,242 GBP
$1,654 USD
View
Retailer 15
-
£1,348 GBP
$1,795 USD
View
Price last confirmed 11 days ago
Retailer 16
-
£1,348 GBP
$1,795 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
£1,374 GBP
View
B
Retailer 18
-
£2,268 GBP
$3,020 USD
View
Most Expensive
B
Brilliant Earth
18600508A · Oct 29
£2,808 GBP
$3,740 USD
View
18 more retailers have this diamond
Prices start from £255 GBPSave up to £2,553 GBP

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
£255 GBP