Heart|Lab Grown|IGI

1.21ct E VS2 Heart Lab Grown Diamond

VG • E/VS2 • IGI LG849654484

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG849654484

Diamond specifications and retailer prices

From £139 GBP
$186 USD
As of October 30, 2026
Save £456 GBP (77%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £595 GBP at Taylor and Hart · As of October 29, 2026
View at Taylor and Hart

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 LG849654484 or 849654484. Listed at 5 retailers as of October 29, 2026, with prices from £139 to £595, a £456 spread on the same certified stone. Taylor and Hart lists it at £595. 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
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849654484
Dimensions6.42 × 7.57 × 4.35 mm
L/W Ratio1.18
Girdle conditionFaceted
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
6.42 mm7.57 mm1.21 ctE / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849654484
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 38.8°CuletDepth 57.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £207 GBP|Low: £139 GBP|High: £595 GBP|Avg: £358 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Taylor and Hart
October 30, 2026
Retailer 2£139 GBP
Retailer 1£207 GBP
Retailer 3£303 GBP
Retailer 4£313 GBP
Taylor and Hart£595 GBP

2 data points across 5 retailers

5 retailers£139 GBP to £595 GBP

A
Cheapest Retailer
-
£139 GBP
$186 USD
A
Retailer 2
-
£207 GBP
View
B+
Retailer 3
-
£303 GBP
$406 USD
View
B+
Retailer 4
-
£313 GBP
View
Most Expensive
B
Taylor and Hart
V18BT02 · Oct 29
£595 GBP
$797 USD
View
4 more retailers have this diamond
Prices start from £139 GBPSave up to £456 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
£139 GBP