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Cushion|Lab Grown|IGI

3.30ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG800614437

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

Certificate IGI LG800614437

Diamond specifications and retailer prices

From £1,043 GBP
$1,398 USD
As of October 29, 2026
Save £5,636 GBP (84%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £6,680 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.3ct lab-grown cushion diamond

This 3.3ct 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 LG800614437 or 800614437. Listed at 6 retailers as of October 29, 2026, with prices from £1,043 to £6,680, a £5,636 spread on the same certified stone. Brilliant Earth lists it at £6,680. 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

3.30
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800614437
Dimensions8.52 × 8.48 × 5.56 mm
L/W Ratio1.00
Girdle conditionFaceted
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
8.52 mm8.48 mm3.30 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800614437
Side View
Table 62.0%Crown 38.7°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 65.6%

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 29
Current: £6,680 GBP|Low: £1,043 GBP|High: £8,575 GBP|Avg: £3,423 GBP|-22.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3£1,043 GBP
Retailer 4£1,337 GBP
Retailer 6£1,809 GBP
Retailer 5£1,817 GBP
Retailer 2£2,849 GBP
Retailer 8£4,607 GBP
Retailer 7£5,561 GBP
Brilliant Earth£6,680 GBP

30 data points across 8 retailers

6 retailers£1,043 GBP to £6,680 GBP

A+
Cheapest Retailer
-
£1,043 GBP
$1,398 USD
A
Retailer 2
-
£1,337 GBP
$1,791 USD
View
A
Retailer 3
-
£1,809 GBP
€2,309 EUR
View
A
Retailer 4
-
£1,817 GBP
$2,434 USD
View
A
Retailer 5
-
£2,849 GBP
View
Most Expensive
B
Brilliant Earth
20278591A · Oct 29
£6,680 GBP
$8,950 USD
View
5 more retailers have this diamond
Prices start from £1,043 GBPSave up to £5,636 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+
3.30ct Cushion
£1,043 GBP