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Heart|Lab Grown|IGI

12.33ct H VS1 Heart Lab Grown Diamond

EX • H/VS1 • IGI LG602390181

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG602390181

Diamond specifications and retailer prices

From £3,832 GBP
$5,134 USD
As of November 1, 2026
Save £10,356 GBP (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £14,188 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.33ct lab-grown heart diamond

This 12.33ct lab-grown heart sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG602390181 or 602390181. Listed at 16 retailers as of October 31, 2026, with prices from £3,832 to £14,188, a £10,356 spread on the same certified stone. Taylor and Hart lists it at £14,188. 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

12.33
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602390181
Dimensions14.00 × 15.89 × 9.24 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.00 mm15.89 mm12.33 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602390181
Side View
Table 63.0%Crown 37.6°Girdle: STK-THKPavilion 37.9°Culet: NoneDepth 58.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,512 GBP|Low: £3,285 GBP|High: £14,188 GBP|Avg: £6,030 GBP|-0.2%
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
Taylor and Hart
November 1, 2026
Retailer 12£3,421 GBP
Retailer 2£3,585 GBP
Retailer 4£3,832 GBP
Retailer 10£3,944 GBP
Retailer 13£3,969 GBP
Retailer 3£4,030 GBP
Retailer 11£4,707 GBP
Retailer 15£4,959 GBP
Retailer 7£5,023 GBP
Retailer 9£6,012 GBP
Retailer 14£6,138 GBP
Retailer 8£6,143 GBP
Retailer 6£6,355 GBP
Retailer 1£7,512 GBP
Retailer 5£11,030 GBP
Taylor and Hart£14,188 GBP

22 data points across 16 retailers

16 retailers£3,832 GBP to £14,188 GBP

Retailer 1
-
£3,421 GBP
$4,584 USD
Price last confirmed 11 days ago
Retailer 2
-
£3,585 GBP
$4,804 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
£3,832 GBP
$5,134 USD
View
Final sale: no returns
A
Retailer 4
-
£3,944 GBP
$5,285 USD
View
Retailer 5
-
£3,969 GBP
$5,318 USD
View
Price last confirmed 10 days ago
Retailer 6
-
£3,969 GBP
$5,318 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
£4,030 GBP
$5,400 USD
View
B+
Retailer 8
-
£4,707 GBP
$6,307 USD
View
Retailer 9
-
£4,959 GBP
$6,645 USD
View
Price last confirmed 10 days ago
Retailer 10
-
£5,367 GBP
$7,191 USD
View
Price last confirmed 18 days ago
B+
Retailer 11
-
£6,012 GBP
$8,055 USD
View
B
Retailer 12
-
£6,138 GBP
$8,224 USD
View
B+
Retailer 13
-
£6,143 GBP
ZAR 132,971 ZAR
View
B
Retailer 14
-
£7,512 GBP
A$15,484 AUD
View
B
Retailer 15
-
£11,030 GBP
$14,779 USD
View
Most Expensive
B
Taylor and Hart
6ZMYRM5 · Oct 31
£14,188 GBP
$19,010 USD
View
15 more retailers have this diamond
Prices start from £3,832 GBPSave up to £10,356 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
12.33ct Heart
£3,832 GBP