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Cushion|Lab Grown|IGI

3.29ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG743509404

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

Certificate IGI LG743509404

Diamond specifications and retailer prices

From £1,296 GBP
$1,736 USD
As of October 31, 2026
Save £5,474 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £8,341 GBP at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 3.29ct lab-grown cushion diamond

This 3.29ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743509404 or 743509404. Listed at 21 retailers as of October 29, 2026, with a 422% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.29
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743509404
Dimensions8.81 × 8.64 × 5.59 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
8.81 mm8.64 mm3.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743509404
Side View
Table 60.0%Crown 37.4°Girdle: MED-STKPavilion 38.1°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 31
Current: £8,341 GBP|Low: £1,296 GBP|High: £8,357 GBP|Avg: £3,562 GBP|-0.2%
Novita Diamonds
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 31, 2026
Retailer 13£1,296 GBP
Retailer 21£1,470 GBP
Retailer 16£1,504 GBP
Retailer 7£1,634 GBP
Retailer 15£1,901 GBP
Retailer 2£2,122 GBP
Retailer 12£2,217 GBP
Retailer 19£2,590 GBP
Retailer 20£3,117 GBP
Retailer 3£3,242 GBP
Retailer 10£3,322 GBP
Retailer 5£3,617 GBP
Retailer 9£3,673 GBP
Retailer 4£3,854 GBP
Retailer 17£4,107 GBP
Retailer 11£4,403 GBP
Retailer 18£4,717 GBP
Retailer 6£4,723 GBP
Retailer 8£5,153 GBP
Retailer 14£6,769 GBP
Novita Diamonds£8,341 GBP

29 data points across 21 retailers

21 retailers£1,296 GBP to £6,769 GBP

A
Cheapest Retailer
-
£1,296 GBP
$1,736 USD
Final sale: no returns
A
Retailer 2
-
£1,470 GBP
$1,970 USD
View
A
Retailer 3
-
£1,504 GBP
$2,015 USD
View
A
Retailer 4
-
£1,634 GBP
HK$17,100 HKD
View
A
Retailer 5
-
£1,901 GBP
View
A
Retailer 6
-
£2,122 GBP
€2,708 EUR
View
A
Retailer 7
-
£2,217 GBP
$2,970 USD
View
A
Retailer 8
-
£2,590 GBP
$3,470 USD
View
A
Retailer 9
-
£3,117 GBP
ZAR 67,468 ZAR
View
B+
Retailer 10
-
£3,242 GBP
View
Retailer 11
-
£3,322 GBP
A$6,848 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£3,617 GBP
$4,847 USD
View
B+
Retailer 13
-
£3,673 GBP
$4,922 USD
View
B+
Retailer 14
-
£3,854 GBP
View
B+
Retailer 15
-
£4,107 GBP
$5,503 USD
View
Retailer 16
-
£4,403 GBP
$5,900 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
£4,717 GBP
$6,321 USD
View
B+
Retailer 18
-
£4,723 GBP
SGD 8,551 SGD
View
B+
Retailer 19
-
£5,153 GBP
$6,905 USD
View
B
Retailer 20
-
£6,769 GBP
$9,070 USD
View
Most Expensive
Novita Diamonds
cert_743509404 · Oct 8
£8,341 GBP
A$17,193 AUD
View
Price last confirmed 22 days ago
20 more retailers have this diamond
Prices start from £1,296 GBPSave up to £5,474 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
3.29ct Cushion
£1,296 GBP