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Cushion|Lab Grown|IGI

3.51ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG727580837

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG727580837

Diamond specifications and retailer prices

From £620 GBP
$832 USD
As of November 1, 2026
Save £2,230 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,850 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG727580837 or 727580837. Listed at 16 retailers as of November 1, 2026, with prices from £620 to £2,850, a £2,230 spread on the same certified stone. Rare Carat lists it at £2,850. 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

3.51
Carat
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727580837
Dimensions8.62 × 8.55 × 5.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.62 mm8.55 mm3.51 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727580837
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 66.9%

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: Nov 1
Current: £1,493 GBP|Low: £620 GBP|High: £2,553 GBP|Avg: £1,380 GBP|-3.8%
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
November 3, 2026
Retailer 4£620 GBP
Retailer 2£642 GBP
Retailer 8£745 GBP
Retailer 15£935 GBP
Retailer 9£1,032 GBP
Retailer 3£1,041 GBP
Retailer 13£1,043 GBP
Retailer 11£1,057 GBP
Retailer 12£1,451 GBP
Retailer 1£1,493 GBP
Retailer 14£1,675 GBP
Retailer 6£1,999 GBP
Retailer 5£2,181 GBP
Retailer 7£2,215 GBP
Retailer 10£2,523 GBP

33 data points across 15 retailers

16 retailers£620 GBP to £2,850 GBP

A
Cheapest Retailer
-
£620 GBP
$832 USD
Final sale: no returns
Retailer 2
-
£642 GBP
$862 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
£745 GBP
View
A
Retailer 4
-
£935 GBP
$1,255 USD
View
A
Retailer 5
-
£1,032 GBP
View
A
Retailer 6
-
£1,041 GBP
$1,397 USD
View
A
Retailer 7
-
£1,043 GBP
$1,400 USD
View
A
Retailer 8
-
£1,057 GBP
€1,351 EUR
View
B+
Retailer 9
-
£1,451 GBP
A$2,995 AUD
View
B+
Retailer 10
-
£1,493 GBP
ZAR 32,367 ZAR
View
B+
Retailer 11
-
£1,675 GBP
$2,248 USD
View
B+
Retailer 12
-
£1,999 GBP
View
B
Retailer 13
-
£2,181 GBP
$2,927 USD
View
B
Retailer 14
-
£2,215 GBP
$2,973 USD
View
B
Retailer 15
-
£2,523 GBP
View
Most Expensive
B
Rare Carat
M6-31p1_l_727580837 · Nov 1
£2,850 GBP
$3,825 USD
View
15 more retailers have this diamond
Prices start from £620 GBPSave up to £2,230 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
3.51ct Cushion
£620 GBP