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Cushion|Lab Grown|IGI

1.01ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG603345567

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG603345567

Diamond specifications and retailer prices

From £182 GBP
As of November 6, 2026
Save £754 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £936 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG603345567 or 603345567. Listed at 10 retailers as of November 6, 2026, with prices from £182 to £936, a £754 spread on the same certified stone. Reve Diamonds lists it at £936. 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.4°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG603345567
Dimensions5.73 × 5.63 × 3.45 mm
L/W Ratio1.02
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
5.73 mm5.63 mm1.01 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG603345567
Side View
Table 63.0%Crown 36.4°Girdle: STK-VTKPavilion 32.1°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £372 GBP|Low: £182 GBP|High: £936 GBP|Avg: £441 GBP|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Reve Diamonds
November 6, 2026
Retailer 6£182 GBP
Retailer 4£202 GBP
Retailer 9£229 GBP
Retailer 7£258 GBP
Retailer 3£347 GBP
Retailer 1£372 GBP
Retailer 5£377 GBP
Retailer 8£690 GBP
Retailer 2£811 GBP
Reve Diamonds£936 GBP

42 data points across 10 retailers

10 retailers£182 GBP to £936 GBP

A
Cheapest Retailer
-
£182 GBP
Final sale: no returns
Retailer 2
-
£202 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£229 GBP
View
A
Retailer 4
-
£258 GBP
View
B+
Retailer 5
-
£347 GBP
View
B+
Retailer 6
-
£372 GBP
View
B
Retailer 7
-
£377 GBP
View
B
Retailer 8
-
£690 GBP
View
B
Retailer 9
-
£811 GBP
View
Most Expensive
B
Reve Diamonds
3BAB54655 · Nov 6
£936 GBP
$1,253 USD
View
9 more retailers have this diamond
Prices start from £182 GBPSave up to £754 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
1.01ct Cushion
£182 GBP