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Cushion|Lab Grown|IGI

3.15ct E VVS1 Cushion Lab Grown Diamond

GD • E/VVS1 • IGI LG706547091

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG706547091

Diamond specifications and retailer prices

From £596 GBP
$799 USD
As of October 29, 2026
Save £1,846 GBP (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,135 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 3.15ct lab-grown cushion diamond

This 3.15ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG706547091 or 706547091. Listed at 16 retailers as of October 29, 2026, with a 310% 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

3.15
Carat
E
Colour
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706547091
Dimensions9.94 × 7.79 × 5.17 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.94 mm7.79 mm3.15 ctE / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706547091
Side View
Table 64.0%Crown 35.1°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 66.4%

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 29
Current: £3,135 GBP|Low: £596 GBP|High: £3,183 GBP|Avg: £1,542 GBP|-1.5%
Rare Carat
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
October 30, 2026
Retailer 3£596 GBP
Retailer 8£631 GBP
Retailer 12£716 GBP
Retailer 15£750 GBP
Retailer 11£846 GBP
Retailer 5£887 GBP
Retailer 2£992 GBP
Retailer 6£1,423 GBP
Retailer 10£1,437 GBP
Retailer 14£1,449 GBP
Retailer 16£1,922 GBP
Retailer 13£2,117 GBP
Retailer 4£2,133 GBP
Retailer 9£2,443 GBP
Retailer 7£2,631 GBP
Rare Carat£3,135 GBP

44 data points across 16 retailers

16 retailers£596 GBP to £2,443 GBP

A
Cheapest Retailer
-
£596 GBP
$799 USD
Final sale: no returns
Retailer 2
-
£631 GBP
$845 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
£716 GBP
HK$7,500 HKD
View
A
Retailer 4
-
£750 GBP
$1,005 USD
View
A
Retailer 5
-
£846 GBP
$1,134 USD
View
A
Retailer 6
-
£887 GBP
$1,188 USD
View
A
Retailer 7
-
£992 GBP
View
Retailer 8
-
£1,423 GBP
A$2,934 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£1,437 GBP
ZAR 31,096 ZAR
View
B+
Retailer 10
-
£1,449 GBP
$1,941 USD
View
B
Retailer 11
-
£1,922 GBP
View
B
Retailer 12
-
£2,117 GBP
$2,836 USD
View
B
Retailer 13
-
£2,133 GBP
$2,858 USD
View
B
Retailer 14
-
£2,443 GBP
View
Retailer 15
-
£2,631 GBP
A$5,423 AUD
View
Price last confirmed 21 days ago
Most Expensive
Rare Carat
C787-150 · Oct 21
£3,135 GBP
$4,200 USD
View
Price last confirmed 9 days ago
15 more retailers have this diamond
Prices start from £596 GBPSave up to £1,846 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
3.15ct Cushion
£596 GBP