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Cushion|Lab Grown|IGI

1.90ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG675592990

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG675592990

Diamond specifications and retailer prices

From £343 GBP
$459 USD
As of October 30, 2026
Save £2,523 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,866 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.9ct lab-grown cushion diamond

This 1.9ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG675592990 or 675592990. Listed at 22 retailers as of October 30, 2026, with prices from £343 to £2,866, a £2,523 spread on the same certified stone. Brilliant Earth lists it at £2,866. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.90
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675592990
Dimensions8.73 × 6.63 × 4.41 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.73 mm6.63 mm1.90 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675592990
Side View
Table 61.0%Crown 31.2°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 66.5%

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: £2,866 GBP|Low: £343 GBP|High: £3,463 GBP|Avg: £1,293 GBP|-17.2%
Brilliant Earth
Retailer 2
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Retailer 20
October 31, 2026
Retailer 8£343 GBP
Retailer 5£379 GBP
Retailer 3£445 GBP
Retailer 18£516 GBP
Retailer 17£545 GBP
Retailer 4£572 GBP
Retailer 13£600 GBP
Retailer 2£693 GBP
Retailer 16£720 GBP
Retailer 20£916 GBP
Retailer 14£976 GBP
Retailer 7£1,384 GBP
Retailer 10£1,407 GBP
Retailer 11£1,457 GBP
Retailer 9£1,480 GBP
Retailer 15£1,547 GBP
Retailer 12£1,740 GBP
Retailer 19£2,347 GBP
Retailer 6£2,717 GBP
Brilliant Earth£2,866 GBP

30 data points across 20 retailers

22 retailers£343 GBP to £2,866 GBP

A
Cheapest Retailer
-
£343 GBP
$459 USD
Final sale: no returns
A
Retailer 2
-
£379 GBP
$508 USD
View
Retailer 3
-
£445 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
£516 GBP
HK$5,400 HKD
View
A
Retailer 5
-
£545 GBP
$730 USD
View
A
Retailer 6
-
£572 GBP
$766 USD
View
A
Retailer 7
-
£600 GBP
$804 USD
View
A
Retailer 8
-
£693 GBP
View
A
Retailer 9
-
£720 GBP
ZAR 15,582 ZAR
View
A
Retailer 10
-
£916 GBP
$1,228 USD
View
A
Retailer 11
-
£976 GBP
A$2,011 AUD
View
B+
Retailer 12
-
£1,384 GBP
$1,855 USD
View
B+
Retailer 13
-
£1,407 GBP
$1,885 USD
View
B+
Retailer 14
-
£1,457 GBP
$1,953 USD
View
B+
Retailer 15
-
£1,480 GBP
SGD 2,680 SGD
View
B+
Retailer 16
-
£1,547 GBP
View
Retailer 17
-
£1,740 GBP
View
Price last confirmed 17 days ago
Retailer 18
-
£2,347 GBP
$3,145 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
£2,654 GBP
View
Retailer 20
-
£2,671 GBP
$3,579 USD
View
Price last confirmed 83 days ago
B
Retailer 21
-
£2,717 GBP
$3,640 USD
View
Most Expensive
B
Brilliant Earth
20152130Y · Oct 30
£2,866 GBP
$3,840 USD
View
21 more retailers have this diamond
Prices start from £343 GBPSave up to £2,523 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
1.90ct Cushion
£343 GBP