Emerald|Lab Grown|IGI

1.28ct E VS1 Emerald Lab Grown Diamond

EX • E/VS1 • IGI LG817653522

Shape and cutting style on the report: Emerald cut

Certificate IGI LG817653522

Diamond specifications and retailer prices

From £139 GBP
$185 USD
As of October 23, 2026
Save £860 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £999 GBP at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

About this 1.28ct lab-grown emerald diamond

This 1.28ct lab-grown emerald sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817653522 or 817653522. Listed at 18 retailers as of October 23, 2026, with a 619% 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

1.28
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817653522
Dimensions5.36 × 5.36 × 3.48 mm
L/W Ratio1.00
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.36 mm5.36 mm1.28 ctE / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG817653522
Side View
Table 64.0%Crown 34.6°Girdle: ThickPavilion 37.7°Culet: LargeDepth 68.6%

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 23
Current: £999 GBP|Low: £110 GBP|High: £1,029 GBP|Avg: £466 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 27, 2026
Retailer 3£155 GBP
Retailer 11£161 GBP
Retailer 12£233 GBP
Retailer 7£291 GBP
Retailer 6£301 GBP
Retailer 2£317 GBP
Retailer 10£425 GBP
Retailer 8£511 GBP
Retailer 5£526 GBP
Retailer 9£810 GBP
Retailer 4£860 GBP
Brilliant Earth£999 GBP

38 data points across 12 retailers

18 retailers£139 GBP to £999 GBP

A
Cheapest Retailer
-
£139 GBP
$185 USD
Retailer 2
-
£161 GBP
$215 USD
View
Price last confirmed 9 days ago
Retailer 3
-
£172 GBP
$229 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£233 GBP
$310 USD
View
Price last confirmed 6 days ago
A
Retailer 5
-
£291 GBP
ZAR 6,265 ZAR
View
A
Retailer 6
-
£301 GBP
View
B+
Retailer 7
-
£317 GBP
€402 EUR
View
B+
Retailer 8
-
£357 GBP
$475 USD
View
B+
Retailer 9
-
£425 GBP
$566 USD
View
Retailer 10
-
£510 GBP
$679 USD
View
Price last confirmed 73 days ago
Retailer 11
-
£511 GBP
$680 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£526 GBP
A$1,078 AUD
View
Retailer 13
-
£553 GBP
$737 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
£594 GBP
$791 USD
View
Retailer 15
-
£810 GBP
View
Price last confirmed 8 days ago
B
Retailer 16
-
£860 GBP
$1,146 USD
View
B
Retailer 17
-
£999 GBP
$1,330 USD
View
Most Expensive
Brilliant Earth
21125522A · Oct 12
£999 GBP
$1,330 USD
View
Price last confirmed 17 days ago
17 more retailers have this diamond
Prices start from £139 GBPSave up to £860 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
1.28ct Emerald
£139 GBP