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Heart|Lab Grown|IGI

1.21ct E VS2 Heart Lab Grown Diamond

VG • E/VS2 • IGI LG678596550

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG678596550

Diamond specifications and retailer prices

From £230 GBP
$308 USD
As of October 30, 2026
Save £567 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £797 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG678596550 or 678596550. Listed at 11 retailers as of October 29, 2026, with prices from £230 to £797, a £567 spread on the same certified stone. MOH London lists it at £797. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
E
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678596550
Dimensions7.24 × 6.90 × 4.27 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.24 mm6.90 mm1.21 ctE / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG678596550
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 59.0%

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: £797 GBP|Low: £230 GBP|High: £819 GBP|Avg: £440 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4£230 GBP
Retailer 8£239 GBP
Retailer 2£306 GBP
Retailer 3£321 GBP
Retailer 5£325 GBP
Retailer 10£407 GBP
Retailer 9£413 GBP
Retailer 7£566 GBP
Retailer 6£586 GBP
MOH London£797 GBP

44 data points across 10 retailers

11 retailers£230 GBP to £797 GBP

B+
Cheapest Retailer
-
£230 GBP
$308 USD
A
Retailer 2
-
£239 GBP
HK$2,500 HKD
View
B+
Retailer 3
-
£306 GBP
View
B+
Retailer 4
-
£321 GBP
€409 EUR
View
B+
Retailer 5
-
£325 GBP
$435 USD
View
Retailer 6
-
£407 GBP
$546 USD
View
Price last confirmed 9 days ago
Retailer 7
-
£413 GBP
$554 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
£566 GBP
$759 USD
View
B
Retailer 9
-
£586 GBP
$785 USD
View
B
Retailer 10
-
£590 GBP
CA$1,098 CAD
View
Most Expensive
B
MOH London
LG678596550 · Oct 29
£797 GBP
View
10 more retailers have this diamond
Prices start from £230 GBPSave up to £567 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
1.21ct Heart
£230 GBP