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Cushion|Lab Grown|IGI

1.37ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG523282964

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG523282964

Diamond specifications and retailer prices

From £131 GBP
$176 USD
As of October 30, 2026
Save £996 GBP (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,127 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523282964 or 523282964. Listed at 12 retailers as of October 30, 2026, with prices from £131 to £1,127, a £996 spread on the same certified stone. Do Amore Diamonds lists it at £1,127. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.37
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523282964
Dimensions6.59 × 6.38 × 4.30 mm
L/W Ratio1.03
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
6.59 mm6.38 mm1.37 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523282964
Side View
Table 60.5%Crown 33.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 67.4%

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: £266 GBP|Low: £131 GBP|High: £1,187 GBP|Avg: £444 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7£131 GBP
Retailer 9£196 GBP
Retailer 1£266 GBP
Retailer 2£287 GBP
Retailer 8£393 GBP
Retailer 6£620 GBP
Retailer 3£634 GBP
Retailer 5£634 GBP
Retailer 4£755 GBP

42 data points across 9 retailers

12 retailers£131 GBP to £1,127 GBP

A
Cheapest Retailer
-
£131 GBP
$176 USD
Final sale: no returns
B+
Retailer 2
-
£196 GBP
$263 USD
View
A
Retailer 3
-
£266 GBP
€340 EUR
View
A
Retailer 4
-
£287 GBP
View
A
Retailer 5
-
£324 GBP
$434 USD
View
B+
Retailer 6
-
£393 GBP
$527 USD
View
B+
Retailer 7
-
£567 GBP
$760 USD
View
B+
Retailer 8
-
£620 GBP
$831 USD
View
B+
Retailer 9
-
£634 GBP
$850 USD
View
Retailer 10
-
£634 GBP
$850 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
£755 GBP
View
Most Expensive
B
Do Amore Diamonds
27-735A00FF9 · Oct 31
£1,127 GBP
$1,510 USD
View
11 more retailers have this diamond
Prices start from £131 GBPSave up to £996 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
£131 GBP