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Heart|Lab Grown|IGI

12.23ct E VS1 Heart Lab Grown Diamond

EX • E/VS1 • IGI LG629419894

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG629419894

Diamond specifications and retailer prices

From £4,380 GBP
As of October 30, 2026
Save £14,460 GBP (77%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £18,840 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.23ct lab-grown heart diamond

This 12.23ct lab-grown heart sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG629419894 or 629419894. Listed at 20 retailers as of October 30, 2026, with prices from £4,380 to £18,840, a £14,460 spread on the same certified stone. Taylor and Hart lists it at £18,840. 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

12.23
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629419894
Dimensions13.58 × 15.93 × 9.70 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Top View
13.58 mm15.93 mm12.23 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629419894
Side View
Table 60.0%Crown 36.8°Girdle: STK-VTKPavilion 40.3°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £6,765 GBP|Low: £4,365 GBP|High: £15,129 GBP|Avg: £7,450 GBP|-0.8%
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
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 11£4,380 GBP
Retailer 18£4,687 GBP
Retailer 9£5,162 GBP
Retailer 7£5,250 GBP
Retailer 4£5,422 GBP
Retailer 2£5,437 GBP
Retailer 6£5,437 GBP
Retailer 16£5,957 GBP
Retailer 3£6,305 GBP
Retailer 5£6,454 GBP
Retailer 1£6,765 GBP
Retailer 12£8,416 GBP
Retailer 10£8,629 GBP
Retailer 13£8,663 GBP
Retailer 17£9,488 GBP
Retailer 14£10,211 GBP
Retailer 15£10,425 GBP
Retailer 8£15,129 GBP

36 data points across 18 retailers

20 retailers£4,380 GBP to £18,840 GBP

B+
Cheapest Retailer
-
£4,380 GBP
Retailer 2
-
£4,687 GBP
$6,280 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£4,874 GBP
$6,531 USD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
£5,162 GBP
$6,916 USD
View
B+
Retailer 5
-
£5,250 GBP
$7,034 USD
View
Final sale: no returns
B+
Retailer 6
-
£5,422 GBP
$7,265 USD
View
Retailer 7
-
£5,437 GBP
$7,285 USD
View
Price last confirmed 9 days ago
Retailer 8
-
£5,437 GBP
$7,285 USD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
£5,957 GBP
$7,982 USD
View
Retailer 10
-
£6,305 GBP
$8,448 USD
View
Price last confirmed 10 days ago
Retailer 11
-
£6,454 GBP
$8,648 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£6,765 GBP
View
Retailer 13
-
£6,914 GBP
View
Price last confirmed 10 days ago
B
Retailer 14
-
£8,416 GBP
ZAR 182,174 ZAR
View
B
Retailer 15
-
£8,663 GBP
$11,608 USD
View
Retailer 16
-
£9,488 GBP
A$19,558 AUD
View
Price last confirmed 23 days ago
B
Retailer 17
-
£10,211 GBP
$13,682 USD
View
Retailer 18
-
£10,425 GBP
A$21,489 AUD
View
Price last confirmed 9 days ago
B
Retailer 19
-
£15,129 GBP
$20,271 USD
View
Most Expensive
B
Taylor and Hart
LSXFFVE · Oct 31
£18,840 GBP
$25,243 USD
View
19 more retailers have this diamond
Prices start from £4,380 GBPSave up to £14,460 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.

B+
12.23ct Heart
£4,380 GBP