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Cushion|Lab Grown|IGI

3.30ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG677521010

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG677521010

Diamond specifications and retailer prices

From £1,227 GBP
$1,644 USD
As of October 29, 2026
Save £5,415 GBP (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £8,367 GBP at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

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 LG677521010 or 677521010. Listed at 20 retailers as of October 29, 2026, with a 441% 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

3.30
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677521010
Dimensions10.04 × 8.01 × 5.22 mm
L/W Ratio1.25
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
10.04 mm8.01 mm3.30 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677521010
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 35°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
A
Excellent
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: £8,367 GBP|Low: £1,163 GBP|High: £8,383 GBP|Avg: £3,369 GBP|+0.3%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 10
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Retailer 12
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Retailer 19
Retailer 20
October 30, 2026
Retailer 6£1,227 GBP
Retailer 2£1,285 GBP
Retailer 7£1,373 GBP
Retailer 5£1,538 GBP
Retailer 15£1,721 GBP
Retailer 17£1,966 GBP
Retailer 19£1,974 GBP
Retailer 9£2,008 GBP
Retailer 18£2,832 GBP
Retailer 20£2,946 GBP
Retailer 10£3,007 GBP
Retailer 8£3,359 GBP
Retailer 14£3,417 GBP
Retailer 3£3,501 GBP
Retailer 11£4,123 GBP
Retailer 16£4,322 GBP
Retailer 4£4,458 GBP
Retailer 13£6,553 GBP
Retailer 12£6,642 GBP
Novita Diamonds£8,367 GBP

32 data points across 20 retailers

20 retailers£1,227 GBP to £6,642 GBP

A
Cheapest Retailer
-
£1,227 GBP
$1,644 USD
Final sale: no returns
A
Retailer 2
-
£1,285 GBP
$1,722 USD
View
A
Retailer 3
-
£1,373 GBP
$1,840 USD
View
A
Retailer 4
-
£1,538 GBP
HK$16,100 HKD
View
A
Retailer 5
-
£1,721 GBP
View
A
Retailer 6
-
£1,966 GBP
$2,634 USD
View
A
Retailer 7
-
£1,974 GBP
€2,519 EUR
View
A
Retailer 8
-
£2,008 GBP
$2,690 USD
View
A
Retailer 9
-
£2,832 GBP
ZAR 61,297 ZAR
View
A
Retailer 10
-
£2,946 GBP
View
Retailer 11
-
£3,007 GBP
A$6,199 AUD
View
Price last confirmed 8 days ago
A
Retailer 12
-
£3,359 GBP
$4,501 USD
View
A
Retailer 13
-
£3,417 GBP
$4,578 USD
View
A
Retailer 14
-
£3,501 GBP
View
Retailer 15
-
£4,123 GBP
$5,525 USD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
£4,322 GBP
$5,792 USD
View
B+
Retailer 17
-
£4,458 GBP
SGD 8,072 SGD
View
B+
Retailer 18
-
£6,553 GBP
$8,780 USD
View
B
Retailer 19
-
£6,642 GBP
$8,900 USD
View
Most Expensive
Novita Diamonds
cert_677521010 · Oct 8
£8,367 GBP
A$17,248 AUD
View
Price last confirmed 22 days ago
19 more retailers have this diamond
Prices start from £1,227 GBPSave up to £5,415 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
£1,227 GBP