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Heart|Lab Grown|IGI

18.23ct G VS2 Heart Lab Grown Diamond

EX • G/VS2 • IGI LG675574744

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG675574744

Diamond specifications and retailer prices

From £6,419 GBP
As of November 1, 2026
Save £18,672 GBP (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £25,091 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 18.23ct lab-grown heart diamond

This 18.23ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG675574744 or 675574744. Listed at 15 retailers as of October 31, 2026, with prices from £6,419 to £25,091, a £18,672 spread on the same certified stone. Taylor and Hart lists it at £25,091. 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

18.23
Carat
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675574744
Dimensions16.50 × 17.74 × 10.81 mm
L/W Ratio1.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.50 mm17.74 mm18.23 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675574744
Side View
Table 59.0%Crown 39.6°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 60.9%

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: £6,419 GBP|Low: £6,417 GBP|High: £25,091 GBP|Avg: £11,129 GBP|-13.1%
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
Taylor and Hart
November 1, 2026
Retailer 1£6,419 GBP
Retailer 14£6,890 GBP
Retailer 4£7,166 GBP
Retailer 2£7,386 GBP
Retailer 10£7,907 GBP
Retailer 3£7,992 GBP
Retailer 11£8,142 GBP
Retailer 13£8,273 GBP
Retailer 6£9,111 GBP
Retailer 9£9,243 GBP
Retailer 8£9,581 GBP
Retailer 7£13,326 GBP
Retailer 12£15,318 GBP
Retailer 5£20,352 GBP
Taylor and Hart£25,091 GBP

36 data points across 15 retailers

15 retailers£6,419 GBP to £25,091 GBP

A
Cheapest Retailer
-
£6,419 GBP
A
Retailer 2
-
£6,890 GBP
$9,232 USD
View
B+
Retailer 3
-
£7,166 GBP
$9,601 USD
View
B+
Retailer 4
-
£7,386 GBP
$9,896 USD
View
B+
Retailer 5
-
£7,907 GBP
$10,595 USD
View
B+
Retailer 6
-
£7,992 GBP
$10,709 USD
View
B+
Retailer 7
-
£8,142 GBP
$10,909 USD
View
B+
Retailer 8
-
£8,273 GBP
HK$86,600 HKD
View
Retailer 9
-
£9,111 GBP
$12,208 USD
View
Price last confirmed 20 days ago
Retailer 10
-
£9,243 GBP
$12,385 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£9,581 GBP
View
B
Retailer 12
-
£13,326 GBP
€17,005 EUR
View
B
Retailer 13
-
£15,318 GBP
$20,525 USD
View
B
Retailer 14
-
£20,352 GBP
$27,270 USD
View
Most Expensive
B
Taylor and Hart
I9V68JZ · Oct 31
£25,091 GBP
$33,620 USD
View
14 more retailers have this diamond
Prices start from £6,419 GBPSave up to £18,672 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
18.23ct Heart
£6,419 GBP