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Emerald|Lab Grown|IGI

1.31ct E IF Emerald Lab Grown Diamond

ID • E/IF • IGI LG691518786

Shape and cutting style on the report: Emerald cut

Certificate IGI LG691518786

Diamond specifications and retailer prices

From £173 GBP
$230 USD
As of October 30, 2026
Save £1,487 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,660 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.31ct lab-grown emerald diamond

This 1.31ct lab-grown emerald sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG691518786 or 691518786. Listed at 22 retailers as of October 29, 2026, with prices from £173 to £1,660, a £1,487 spread on the same certified stone. Brilliant Earth lists it at £1,660. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691518786
Dimensions7.46 × 5.18 × 3.50 mm
L/W Ratio1.44
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.46 mm5.18 mm1.31 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691518786
Side View
Table 63.0%Crown 30.5°Girdle: Slightly ThickPavilion 40.8°Culet: LargeDepth 67.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,660 GBP|Low: £137 GBP|High: £1,660 GBP|Avg: £563 GBP
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 3£173 GBP
Retailer 10£192 GBP
Retailer 7£200 GBP
Retailer 4£214 GBP
Retailer 6£214 GBP
Retailer 21£289 GBP
Retailer 13£357 GBP
Retailer 16£368 GBP
Retailer 8£397 GBP
Retailer 2£403 GBP
Retailer 17£522 GBP
Retailer 9£544 GBP
Retailer 11£674 GBP
Retailer 5£688 GBP
Retailer 20£690 GBP
Retailer 14£727 GBP
Retailer 15£768 GBP
Retailer 18£858 GBP
Retailer 12£968 GBP
Retailer 19£1,389 GBP
Brilliant Earth£1,660 GBP

45 data points across 21 retailers

22 retailers£173 GBP to £1,660 GBP

A
Cheapest Retailer
-
£173 GBP
$230 USD
A
Retailer 2
-
£192 GBP
$256 USD
View
Final sale: no returns
A
Retailer 3
-
£200 GBP
$266 USD
View
A
Retailer 4
-
£214 GBP
$285 USD
View
A
Retailer 5
-
£214 GBP
$285 USD
View
B+
Retailer 6
-
£289 GBP
$385 USD
View
A
Retailer 7
-
£357 GBP
€453 EUR
View
A
Retailer 8
-
£368 GBP
ZAR 7,907 ZAR
View
A
Retailer 9
-
£397 GBP
$529 USD
View
A
Retailer 10
-
£403 GBP
View
A
Retailer 11
-
£522 GBP
A$1,069 AUD
View
B+
Retailer 12
-
£556 GBP
$740 USD
View
B+
Retailer 13
-
£674 GBP
$897 USD
View
B+
Retailer 14
-
£688 GBP
$916 USD
View
B+
Retailer 15
-
£690 GBP
$919 USD
View
B+
Retailer 16
-
£727 GBP
$968 USD
View
B+
Retailer 17
-
£768 GBP
A$1,573 AUD
View
B+
Retailer 18
-
£835 GBP
View
B+
Retailer 19
-
£858 GBP
View
B
Retailer 20
-
£968 GBP
$1,289 USD
View
B
Retailer 21
-
£1,389 GBP
$1,850 USD
View
Most Expensive
B
Brilliant Earth
13874230A · Oct 29
£1,660 GBP
$2,210 USD
View
21 more retailers have this diamond
Prices start from £173 GBPSave up to £1,487 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
1.31ct Emerald
£173 GBP