CaratHunter
Plans
Heart|Lab Grown|IGI

6.54ct F VVS2 Heart Lab Grown Diamond

EX • F/VVS2 • IGI LG818626555

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818626555

Diamond specifications and retailer prices

From £1,156 GBP
HK$12,100 HKD
As of November 1, 2026
Save £3,665 GBP (76%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,821 GBP at With Clarity · As of November 2, 2026
View at With Clarity

About this 6.54ct lab-grown heart diamond

This 6.54ct lab-grown heart sits in the over five carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818626555 or 818626555. Listed at 9 retailers as of November 1, 2026, with prices from £1,156 to £4,821, a £3,665 spread on the same certified stone. With Clarity lists it at £4,821. 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

6.54
Carat
F
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818626555
Dimensions11.74 × 12.84 × 7.59 mm
L/W Ratio1.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.74 mm12.84 mm6.54 ctF / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818626555
Side View
Table 60.0%Crown 35.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.1%

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: Nov 1
Current: £1,408 GBP|Low: £1,156 GBP|High: £5,056 GBP|Avg: £2,753 GBP|-7.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
November 2, 2026
Retailer 5£1,156 GBP
Retailer 1£1,408 GBP
Retailer 6£1,557 GBP
Retailer 3£1,570 GBP
Retailer 7£2,323 GBP
Retailer 2£3,145 GBP
Retailer 8£3,425 GBP
Retailer 4£3,943 GBP
With Clarity£4,821 GBP

42 data points across 9 retailers

9 retailers£1,156 GBP to £4,821 GBP

A
Cheapest Retailer
-
£1,156 GBP
HK$12,100 HKD
A
Retailer 2
-
£1,408 GBP
View
A
Retailer 3
-
£1,557 GBP
$2,086 USD
View
A
Retailer 4
-
£1,570 GBP
€2,004 EUR
View
B+
Retailer 5
-
£2,323 GBP
$3,113 USD
View
B+
Retailer 6
-
£3,145 GBP
View
B
Retailer 7
-
£3,425 GBP
$4,589 USD
View
B
Retailer 8
-
£3,943 GBP
A$8,129 AUD
View
Most Expensive
B
With Clarity
818626555 · Nov 2
£4,821 GBP
$6,460 USD
View
8 more retailers have this diamond
Prices start from £1,156 GBPSave up to £3,665 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
6.54ct Heart
£1,156 GBP