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Cushion|Lab Grown|IGI

1.60ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG532240127

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG532240127

Diamond specifications and retailer prices

From £219 GBP
$294 USD
As of October 30, 2026
Save £930 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,149 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.6ct lab-grown cushion diamond

This 1.6ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG532240127 or 532240127. Listed at 14 retailers as of October 29, 2026, with prices from £219 to £1,149, a £930 spread on the same certified stone. Brilliant Earth lists it at £1,149. 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

1.60
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG532240127
Dimensions6.94 × 6.88 × 4.45 mm
L/W Ratio1.01
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
6.94 mm6.88 mm1.60 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG532240127
Side View
Table 59.5%Crown 35.7°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 64.7%

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: Oct 30
Current: £1,149 GBP|Low: £156 GBP|High: £1,194 GBP|Avg: £566 GBP|-3.8%
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
October 30, 2026
Retailer 4£219 GBP
Retailer 12£243 GBP
Retailer 2£272 GBP
Retailer 14£327 GBP
Retailer 10£328 GBP
Retailer 5£421 GBP
Retailer 8£437 GBP
Retailer 3£442 GBP
Retailer 7£465 GBP
Retailer 13£615 GBP
Retailer 11£802 GBP
Retailer 6£820 GBP
Retailer 9£980 GBP
Brilliant Earth£1,149 GBP

41 data points across 14 retailers

14 retailers£219 GBP to £1,149 GBP

A
Cheapest Retailer
-
£219 GBP
$294 USD
Final sale: no returns
A
Retailer 2
-
£243 GBP
$326 USD
View
A
Retailer 3
-
£272 GBP
View
B+
Retailer 4
-
£327 GBP
$438 USD
View
A
Retailer 5
-
£328 GBP
$440 USD
View
B+
Retailer 6
-
£421 GBP
$564 USD
View
A
Retailer 7
-
£437 GBP
€558 EUR
View
B+
Retailer 8
-
£442 GBP
$592 USD
View
B+
Retailer 9
-
£465 GBP
View
B+
Retailer 10
-
£615 GBP
$824 USD
View
Retailer 11
-
£802 GBP
$1,075 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£820 GBP
$1,099 USD
View
B
Retailer 13
-
£980 GBP
View
Most Expensive
B
Brilliant Earth
11226005A · Oct 29
£1,149 GBP
$1,540 USD
View
13 more retailers have this diamond
Prices start from £219 GBPSave up to £930 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
1.60ct Cushion
£219 GBP