CaratHunter
Plans
Heart|Lab Grown|IGI

3.51ct E VS2 Heart Lab Grown Diamond

EX • E/VS2 • IGI LG678573994

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG678573994

Diamond specifications and retailer prices

From £666 GBP
$892 USD
As of October 30, 2026
Save £2,506 GBP (79%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,172 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.51ct lab-grown heart diamond

This 3.51ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG678573994 or 678573994. Listed at 5 retailers as of October 30, 2026, with prices from £666 to £3,172, a £2,506 spread on the same certified stone. Brilliant Earth lists it at £3,172. 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
E
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678573994
Dimensions10.18 × 10.18 × 9.37 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.18 mm10.18 mm3.51 ctE / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678573994
Side View
Table 54.0%Crown 37.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
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: Oct 30
Current: £3,172 GBP|Low: £545 GBP|High: £4,575 GBP|Avg: £1,385 GBP|-30.0%
Brilliant Earth
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
October 30, 2026
Retailer 9£545 GBP
Retailer 10£655 GBP
Retailer 13£666 GBP
Retailer 5£742 GBP
Retailer 2£813 GBP
Retailer 11£818 GBP
Retailer 4£826 GBP
Retailer 7£1,120 GBP
Retailer 14£1,181 GBP
Retailer 8£1,245 GBP
Retailer 3£1,445 GBP
Retailer 6£1,785 GBP
Brilliant Earth£3,172 GBP
Retailer 12£3,605 GBP

18 data points across 14 retailers

5 retailers£666 GBP to £3,172 GBP

B+
Cheapest Retailer
-
£666 GBP
$892 USD
A
Retailer 2
-
£813 GBP
€1,038 EUR
View
A
Retailer 3
-
£1,120 GBP
A$2,308 AUD
View
B+
Retailer 4
-
£1,245 GBP
$1,668 USD
View
Most Expensive
B
Brilliant Earth
20509676A · Oct 30
£3,172 GBP
$4,250 USD
View
4 more retailers have this diamond
Prices start from £666 GBPSave up to £2,506 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 Heart
£666 GBP