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Cushion|Lab Grown|IGI

1.89ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG839647791

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG839647791

Diamond specifications and retailer prices

From £455 GBP
$606 USD
As of October 27, 2026
Save £3,277 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,732 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839647791 or 839647791. Listed at 19 retailers as of October 27, 2026, with prices from £455 to £3,732, a £3,277 spread on the same certified stone. Brilliant Earth lists it at £3,732. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839647791
Dimensions8.72 × 6.26 × 3.95 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.72 mm6.26 mm1.89 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839647791
Side View
Table 66.0%Crown 33.6°Girdle: MED-THKPavilion 32.8°Culet: NoneDepth 63.1%

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 27
Current: £3,732 GBP|Low: £455 GBP|High: £3,732 GBP|Avg: £1,372 GBP
Brilliant Earth
Retailer 2
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Retailer 19
October 29, 2026
Retailer 9£455 GBP
Retailer 3£522 GBP
Retailer 17£548 GBP
Retailer 6£608 GBP
Retailer 2£731 GBP
Retailer 4£779 GBP
Retailer 14£781 GBP
Retailer 16£859 GBP
Retailer 18£1,181 GBP
Retailer 8£1,207 GBP
Retailer 5£1,465 GBP
Retailer 13£1,576 GBP
Retailer 7£1,624 GBP
Retailer 11£1,637 GBP
Retailer 10£1,715 GBP
Retailer 15£2,108 GBP
Retailer 12£2,189 GBP
Retailer 19£2,189 GBP
Brilliant Earth£3,732 GBP

23 data points across 19 retailers

19 retailers£455 GBP to £3,732 GBP

A
Cheapest Retailer
-
£455 GBP
$606 USD
Final sale: no returns
Retailer 2
-
£522 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£548 GBP
HK$5,700 HKD
View
A
Retailer 4
-
£608 GBP
$810 USD
View
A
Retailer 5
-
£731 GBP
€927 EUR
View
A
Retailer 6
-
£779 GBP
$1,037 USD
View
A
Retailer 7
-
£781 GBP
View
A
Retailer 8
-
£859 GBP
ZAR 18,478 ZAR
View
Retailer 9
-
£1,181 GBP
A$2,420 AUD
View
Price last confirmed 9 days ago
A
Retailer 10
-
£1,207 GBP
$1,607 USD
View
B+
Retailer 11
-
£1,465 GBP
View
B+
Retailer 12
-
£1,576 GBP
SGD 2,837 SGD
View
B+
Retailer 13
-
£1,624 GBP
$2,162 USD
View
B+
Retailer 14
-
£1,637 GBP
$2,180 USD
View
B+
Retailer 15
-
£1,715 GBP
$2,283 USD
View
B+
Retailer 16
-
£2,108 GBP
View
B+
Retailer 17
-
£2,189 GBP
$2,915 USD
View
B+
Retailer 18
-
£2,189 GBP
$2,915 USD
View
Most Expensive
B
Brilliant Earth
21808108A · Oct 29
£3,732 GBP
$4,970 USD
View
18 more retailers have this diamond
Prices start from £455 GBPSave up to £3,277 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
1.89ct Cushion
£455 GBP