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Cushion|Lab Grown|IGI

3.29ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG732516309

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG732516309

Diamond specifications and retailer prices

From £1,117 GBP
$1,496 USD
As of October 30, 2026
Save £6,436 GBP (85%) vs most expensive(unlock to see where)
13 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 LG732516309 or 732516309. Listed at 13 retailers as of October 30, 2026, with a 576% 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 angle37.5°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732516309
Dimensions8.68 × 8.60 × 5.66 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
8.68 mm8.60 mm3.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732516309
Side View
Table 63.0%Crown 37.5°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A+
Exceptional
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: £8,341 GBP|Low: £1,117 GBP|High: £8,357 GBP|Avg: £3,450 GBP|+1.6%
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
October 30, 2026
Retailer 2£1,117 GBP
Retailer 11£1,131 GBP
Retailer 5£1,254 GBP
Retailer 12£1,593 GBP
Retailer 7£1,783 GBP
Retailer 6£1,961 GBP
Retailer 10£2,777 GBP
Retailer 13£2,845 GBP
Retailer 8£3,519 GBP
Retailer 3£4,269 GBP
Retailer 4£6,717 GBP
Retailer 9£7,553 GBP
Novita Diamonds£8,341 GBP

33 data points across 13 retailers

13 retailers£1,117 GBP to £7,553 GBP

A+
Cheapest Retailer
-
£1,117 GBP
$1,496 USD
A
Retailer 2
-
£1,131 GBP
$1,515 USD
View
A
Retailer 3
-
£1,254 GBP
$1,680 USD
View
Final sale: no returns
A
Retailer 4
-
£1,593 GBP
$2,135 USD
View
A
Retailer 5
-
£1,783 GBP
€2,275 EUR
View
A
Retailer 6
-
£1,961 GBP
$2,628 USD
View
A
Retailer 7
-
£2,777 GBP
$3,720 USD
View
Retailer 8
-
£2,845 GBP
A$5,864 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
£3,519 GBP
View
Retailer 10
-
£4,269 GBP
$5,720 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
£6,717 GBP
$9,000 USD
View
B
Retailer 12
-
£7,553 GBP
$10,120 USD
View
Most Expensive
Novita Diamonds
cert_732516309 · Oct 8
£8,341 GBP
A$17,193 AUD
View
Price last confirmed 22 days ago
12 more retailers have this diamond
Prices start from £1,117 GBPSave up to £6,436 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
£1,117 GBP