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Cushion|Lab Grown|IGI

1.59ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG710553301

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG710553301

Diamond specifications and retailer prices

From £378 GBP
$507 USD
As of November 1, 2026
Save £1,532 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,911 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.59ct lab-grown cushion diamond

This 1.59ct 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 LG710553301 or 710553301. Listed at 18 retailers as of October 31, 2026, with prices from £378 to £1,911, a £1,532 spread on the same certified stone. Brilliant Earth lists it at £1,911. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.59
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710553301
Dimensions8.42 × 5.68 × 3.90 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.42 mm5.68 mm1.59 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG710553301
Side View
Table 58.0%Crown 31.8°Girdle: MED-STKPavilion 35°Culet: NoneDepth 68.7%

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: Nov 1
Current: £1,911 GBP|Low: £378 GBP|High: £2,306 GBP|Avg: £1,088 GBP|-17.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 6£378 GBP
Retailer 13£419 GBP
Retailer 16£634 GBP
Retailer 11£654 GBP
Retailer 4£655 GBP
Retailer 10£688 GBP
Retailer 15£696 GBP
Retailer 5£871 GBP
Retailer 14£1,014 GBP
Retailer 17£1,159 GBP
Retailer 8£1,328 GBP
Retailer 9£1,371 GBP
Retailer 3£1,400 GBP
Retailer 7£1,493 GBP
Retailer 2£1,539 GBP
Retailer 12£1,780 GBP
Brilliant Earth£1,911 GBP

43 data points across 17 retailers

18 retailers£378 GBP to £1,911 GBP

A
Cheapest Retailer
-
£378 GBP
$507 USD
Final sale: no returns
Retailer 2
-
£419 GBP
$561 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
£634 GBP
$850 USD
View
A
Retailer 4
-
£654 GBP
€834 EUR
View
A
Retailer 5
-
£655 GBP
$877 USD
View
A
Retailer 6
-
£688 GBP
View
A
Retailer 7
-
£696 GBP
$932 USD
View
A
Retailer 8
-
£871 GBP
$1,167 USD
View
A
Retailer 9
-
£1,014 GBP
$1,359 USD
View
B+
Retailer 10
-
£1,159 GBP
$1,553 USD
View
B+
Retailer 11
-
£1,328 GBP
SGD 2,405 SGD
View
B+
Retailer 12
-
£1,371 GBP
$1,837 USD
View
B+
Retailer 13
-
£1,400 GBP
$1,876 USD
View
B+
Retailer 14
-
£1,493 GBP
$2,000 USD
View
B+
Retailer 15
-
£1,539 GBP
View
Retailer 16
-
£1,780 GBP
$2,385 USD
View
Price last confirmed 11 days ago
Retailer 17
-
£1,799 GBP
$2,410 USD
View
Price last confirmed 25 days ago
Most Expensive
B+
Brilliant Earth
14795915A · Oct 31
£1,911 GBP
$2,560 USD
View
17 more retailers have this diamond
Prices start from £378 GBPSave up to £1,532 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
1.59ct Cushion
£378 GBP