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Cushion|Lab Grown|IGI

3.15ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG846662143

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG846662143

Diamond specifications and retailer prices

From £675 GBP
$905 USD
As of October 31, 2026
Save £4,562 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,237 GBP at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 3.15ct lab-grown cushion diamond

This 3.15ct 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 LG846662143 or 846662143. Listed at 12 retailers as of October 31, 2026, with prices from £675 to £5,237, a £4,562 spread on the same certified stone. Frank Darling lists it at £5,237. 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

3.15
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662143
Dimensions9.93 × 6.83 × 4.41 mm
L/W Ratio1.45
Culet sizeLarge
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
9.93 mm6.83 mm3.15 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662143
Side View
Table 61.0%Crown 31°Girdle: STK-THKPavilion 39.6°Culet: LargeDepth 64.6%

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: £5,237 GBP|Low: £675 GBP|High: £5,237 GBP|Avg: £2,316 GBP|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 8£675 GBP
Retailer 11£744 GBP
Retailer 12£946 GBP
Retailer 2£973 GBP
Retailer 9£1,240 GBP
Retailer 6£1,449 GBP
Retailer 7£2,534 GBP
Retailer 3£2,870 GBP
Retailer 5£2,956 GBP
Retailer 4£3,978 GBP
Retailer 10£4,448 GBP
Frank Darling£5,237 GBP

11 data points across 12 retailers

12 retailers£675 GBP to £5,237 GBP

A
Cheapest Retailer
-
£675 GBP
$905 USD
A
Retailer 2
-
£744 GBP
$997 USD
View
A
Retailer 3
-
£946 GBP
$1,268 USD
View
A
Retailer 4
-
£973 GBP
€1,241 EUR
View
A
Retailer 5
-
£1,240 GBP
$1,662 USD
View
A
Retailer 6
-
£1,449 GBP
A$2,987 AUD
View
B
Retailer 7
-
£2,534 GBP
View
Retailer 8
-
£2,870 GBP
$3,845 USD
View
Price last confirmed 10 days ago
B
Retailer 9
-
£2,956 GBP
A$6,094 AUD
View
B
Retailer 10
-
£3,978 GBP
$5,330 USD
View
B
Retailer 11
-
£4,448 GBP
$5,960 USD
View
Most Expensive
B
Frank Darling
P91M-1EL · Oct 31
£5,237 GBP
$7,017 USD
View
11 more retailers have this diamond
Prices start from £675 GBPSave up to £4,562 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
£675 GBP