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Cushion|Lab Grown|IGI

1.37ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG831698113

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831698113

Diamond specifications and retailer prices

From £368 GBP
$494 USD
As of November 3, 2026
Save £1,540 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,908 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.37ct lab-grown cushion diamond

This 1.37ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831698113 or 831698113. Listed at 15 retailers as of November 2, 2026, with prices from £368 to £1,908, a £1,540 spread on the same certified stone. Brilliant Earth lists it at £1,908. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.37
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831698113
Dimensions8.35 × 5.54 × 3.65 mm
L/W Ratio1.51
Girdle conditionFaceted
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
8.35 mm5.54 mm1.37 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831698113
Side View
Table 61.0%Crown 36°Girdle: THK-VTKPavilion 34.2°Culet: NoneDepth 65.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £1,908 GBP|Low: £368 GBP|High: £1,908 GBP|Avg: £848 GBP
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
November 3, 2026
Retailer 8£368 GBP
Retailer 6£408 GBP
Retailer 11£420 GBP
Retailer 3£619 GBP
Retailer 5£640 GBP
Retailer 9£674 GBP
Retailer 15£681 GBP
Retailer 12£704 GBP
Retailer 4£763 GBP
Retailer 10£998 GBP
Retailer 2£1,174 GBP
Retailer 7£1,413 GBP
Retailer 14£1,499 GBP
Retailer 13£1,516 GBP
Brilliant Earth£1,908 GBP

10 data points across 15 retailers

15 retailers£368 GBP to £1,908 GBP

A
Cheapest Retailer
-
£368 GBP
$494 USD
Final sale: no returns
Retailer 2
-
£408 GBP
$548 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
£420 GBP
View
A
Retailer 4
-
£619 GBP
$830 USD
View
A
Retailer 5
-
£640 GBP
$859 USD
View
A
Retailer 6
-
£674 GBP
View
A
Retailer 7
-
£681 GBP
€870 EUR
View
A
Retailer 8
-
£704 GBP
ZAR 15,256 ZAR
View
A
Retailer 9
-
£763 GBP
$1,024 USD
View
B+
Retailer 10
-
£998 GBP
$1,339 USD
View
B+
Retailer 11
-
£1,174 GBP
$1,575 USD
View
B
Retailer 12
-
£1,413 GBP
SGD 2,562 SGD
View
B
Retailer 13
-
£1,499 GBP
View
B
Retailer 14
-
£1,516 GBP
$2,035 USD
View
Most Expensive
B
Brilliant Earth
22262671A · Nov 2
£1,908 GBP
$2,560 USD
View
14 more retailers have this diamond
Prices start from £368 GBPSave up to £1,540 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
1.37ct Cushion
£368 GBP