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Cushion|Lab Grown|IGI

3.10ct D VVS1 Cushion Lab Grown Diamond

EX • D/VVS1 • IGI LG728578057

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG728578057

Diamond specifications and retailer prices

From £787 GBP
$1,054 USD
As of November 1, 2026
Save £4,699 GBP (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,083 GBP at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG728578057 or 728578057. Listed at 20 retailers as of November 1, 2026, with a 597% 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

3.10
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728578057
Dimensions7.88 × 7.88 × 5.26 mm
L/W Ratio1.00
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
7.88 mm7.88 mm3.10 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728578057
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 66.8%

Caratlytics Score

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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: Nov 1
Current: £1,218 GBP|Low: £690 GBP|High: £5,486 GBP|Avg: £2,039 GBP|-7.0%
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 2, 2026
Retailer 16£787 GBP
Retailer 18£907 GBP
Retailer 7£937 GBP
Retailer 9£1,022 GBP
Retailer 3£1,194 GBP
Retailer 1£1,218 GBP
Retailer 4£1,218 GBP
Retailer 13£1,267 GBP
Retailer 14£1,786 GBP
Retailer 15£1,836 GBP
Retailer 2£2,036 GBP
Retailer 10£2,184 GBP
Retailer 6£2,364 GBP
Retailer 12£2,681 GBP
Retailer 11£2,818 GBP
Retailer 17£2,821 GBP
Retailer 8£2,951 GBP
Retailer 19£3,047 GBP
Retailer 5£5,486 GBP

40 data points across 19 retailers

20 retailers£787 GBP to £5,486 GBP

A
Cheapest Retailer
-
£787 GBP
$1,054 USD
Final sale: no returns
A
Retailer 2
-
£907 GBP
$1,215 USD
View
A
Retailer 3
-
£937 GBP
$1,256 USD
View
A
Retailer 4
-
£1,022 GBP
HK$10,700 HKD
View
A
Retailer 5
-
£1,194 GBP
$1,600 USD
View
A
Retailer 6
-
£1,218 GBP
View
A
Retailer 7
-
£1,218 GBP
$1,632 USD
View
A
Retailer 8
-
£1,267 GBP
€1,617 EUR
View
B+
Retailer 9
-
£1,786 GBP
A$3,681 AUD
View
B+
Retailer 10
-
£1,836 GBP
ZAR 39,738 ZAR
View
B+
Retailer 11
-
£2,036 GBP
$2,728 USD
View
B+
Retailer 12
-
£2,184 GBP
View
B+
Retailer 13
-
£2,364 GBP
$3,167 USD
View
B+
Retailer 14
-
£2,681 GBP
View
B
Retailer 15
-
£2,818 GBP
$3,776 USD
View
Retailer 16
-
£2,821 GBP
$3,780 USD
View
Price last confirmed 11 days ago
B+
Retailer 17
-
£2,951 GBP
SGD 5,344 SGD
View
Retailer 18
-
£3,047 GBP
A$6,281 AUD
View
Price last confirmed 24 days ago
B
Retailer 19
-
£5,486 GBP
$7,350 USD
View
Most Expensive
Brilliant Earth
20870081Y · Sep 28
£7,083 GBP
$9,490 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from £787 GBPSave up to £4,699 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
3.10ct Cushion
£787 GBP