Cushion|Lab Grown|IGI

3.09ct D VS1 Cushion Lab Grown Diamond

D/VS1 • IGI LG784679511

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG784679511

Diamond specifications and retailer prices

From £433 GBP
$580 USD
As of October 31, 2026
Save £1,579 GBP (78%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,008 GBP at Brilliant Earth · As of September 23, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included) and certified by IGI LG784679511 or 784679511. Listed at 20 retailers as of October 29, 2026, with a 365% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.09
Carat
D
Colour
VS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784679511
Dimensions10.32 × 7.52 × 5.19 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.32 mm7.52 mm3.09 ctD / VS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784679511
Side View
Table 60.0%Crown 32.9°Girdle: STK-THKPavilion 36.8°Culet: NoneDepth 69.0%

Caratlytics Score

How it works →
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: £743 GBP|Low: £424 GBP|High: £2,244 GBP|Avg: £1,110 GBP|-6.1%
Retailer 1
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
November 1, 2026
Retailer 3£433 GBP
Retailer 11£470 GBP
Retailer 17£525 GBP
Retailer 13£582 GBP
Retailer 6£625 GBP
Retailer 2£691 GBP
Retailer 12£716 GBP
Retailer 1£743 GBP
Retailer 14£1,012 GBP
Retailer 16£1,032 GBP
Retailer 18£1,087 GBP
Retailer 19£1,123 GBP
Retailer 5£1,399 GBP
Retailer 9£1,519 GBP
Retailer 4£1,559 GBP
Retailer 8£1,648 GBP
Retailer 7£1,717 GBP
Retailer 10£1,836 GBP
Retailer 15£2,012 GBP

34 data points across 19 retailers

20 retailers£433 GBP to £2,012 GBP

A
Cheapest Retailer
-
£433 GBP
$580 USD
Final sale: no returns
Retailer 2
-
£470 GBP
$630 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£525 GBP
HK$5,500 HKD
View
A
Retailer 4
-
£582 GBP
$780 USD
View
B+
Retailer 5
-
£625 GBP
$838 USD
View
A
Retailer 6
-
£691 GBP
$926 USD
View
A
Retailer 7
-
£716 GBP
€914 EUR
View
A
Retailer 8
-
£743 GBP
View
B+
Retailer 9
-
£1,012 GBP
A$2,087 AUD
View
Retailer 10
-
£1,032 GBP
ZAR 22,328 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,087 GBP
$1,457 USD
View
B+
Retailer 12
-
£1,123 GBP
$1,505 USD
View
B+
Retailer 13
-
£1,399 GBP
View
B
Retailer 14
-
£1,519 GBP
SGD 2,751 SGD
View
B
Retailer 15
-
£1,559 GBP
$2,089 USD
View
B+
Retailer 16
-
£1,648 GBP
$2,208 USD
View
B+
Retailer 17
-
£1,717 GBP
$2,301 USD
View
Retailer 18
-
£1,836 GBP
A$3,784 AUD
View
Price last confirmed 29 days ago
B
Retailer 19
-
£2,012 GBP
View
Most Expensive
Brilliant Earth
20255254A · Sep 23
£5,008 GBP
$6,710 USD
View
Price last confirmed 38 days ago
19 more retailers have this diamond
Prices start from £433 GBPSave up to £1,579 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
3.09ct Cushion
£433 GBP