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Cushion|Lab Grown|IGI

2.18ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG614307341

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG614307341

Diamond specifications and retailer prices

From £257 GBP
$344 USD
As of October 31, 2026
Save £1,236 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,493 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.18ct lab-grown cushion diamond

This 2.18ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG614307341 or 614307341. Listed at 13 retailers as of October 30, 2026, with prices from £257 to £1,493, a £1,236 spread on the same certified stone. Brilliant Earth lists it at £1,493. 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

2.18
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG614307341
Dimensions8.31 × 6.97 × 4.83 mm
L/W Ratio1.19
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
8.31 mm6.97 mm2.18 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG614307341
Side View
Table 64.0%Crown 36.2°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 69.3%

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 31
Current: £1,493 GBP|Low: £257 GBP|High: £2,373 GBP|Avg: £723 GBP|-37.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10£257 GBP
Retailer 7£285 GBP
Retailer 8£382 GBP
Retailer 4£399 GBP
Retailer 3£467 GBP
Retailer 9£498 GBP
Retailer 2£503 GBP
Retailer 6£732 GBP
Retailer 5£1,148 GBP
Brilliant Earth£1,493 GBP

42 data points across 10 retailers

13 retailers£257 GBP to £1,493 GBP

A
Cheapest Retailer
-
£257 GBP
$344 USD
Final sale: no returns
A
Retailer 2
-
£285 GBP
$382 USD
View
B+
Retailer 3
-
£382 GBP
$512 USD
View
A
Retailer 4
-
£399 GBP
$535 USD
View
A
Retailer 5
-
£467 GBP
€596 EUR
View
A
Retailer 6
-
£498 GBP
$667 USD
View
A
Retailer 7
-
£503 GBP
View
A
Retailer 8
-
£600 GBP
$804 USD
View
B+
Retailer 9
-
£732 GBP
$981 USD
View
B+
Retailer 10
-
£951 GBP
$1,274 USD
View
Retailer 11
-
£1,148 GBP
View
Price last confirmed 10 days ago
Retailer 12
-
£1,184 GBP
$1,587 USD
View
Price last confirmed 88 days ago
Most Expensive
B
Brilliant Earth
11370890A · Oct 30
£1,493 GBP
$2,000 USD
View
12 more retailers have this diamond
Prices start from £257 GBPSave up to £1,236 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
2.18ct Cushion
£257 GBP