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Heart|Lab Grown|IGI

12.01ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG671453956

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG671453956

Diamond specifications and retailer prices

From £2,989 GBP
$4,011 USD
As of November 1, 2026
Save £8,260 GBP (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £14,539 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 12.01ct lab-grown heart diamond

This 12.01ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG671453956 or 671453956. Listed at 15 retailers as of October 31, 2026, with a 276% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

12.01
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671453956
Dimensions14.64 × 15.30 × 9.18 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
14.64 mm15.30 mm12.01 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671453956
Side View
Table 59.0%Crown 36.2°Girdle: THK-VTKPavilion 39.6°Culet: NoneDepth 60.0%

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: Nov 1
Current: £14,539 GBP|Low: £2,962 GBP|High: £14,539 GBP|Avg: £6,395 GBP
Brilliant Earth
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
November 3, 2026
Retailer 7£2,989 GBP
Retailer 13£3,301 GBP
Retailer 3£3,749 GBP
Retailer 2£4,125 GBP
Retailer 10£4,309 GBP
Retailer 5£4,641 GBP
Retailer 12£4,932 GBP
Retailer 8£4,939 GBP
Retailer 9£5,970 GBP
Retailer 11£6,684 GBP
Retailer 14£8,020 GBP
Retailer 6£10,025 GBP
Retailer 4£11,249 GBP
Brilliant Earth£14,539 GBP

43 data points across 14 retailers

15 retailers£2,989 GBP to £11,249 GBP

A
Cheapest Retailer
-
£2,989 GBP
$4,011 USD
A
Retailer 2
-
£3,301 GBP
$4,430 USD
View
A
Retailer 3
-
£3,749 GBP
HK$39,300 HKD
View
A
Retailer 4
-
£4,125 GBP
View
A
Retailer 5
-
£4,309 GBP
$5,782 USD
View
A
Retailer 6
-
£4,641 GBP
€5,932 EUR
View
B+
Retailer 7
-
£4,932 GBP
ZAR 106,921 ZAR
View
B+
Retailer 8
-
£4,939 GBP
$6,628 USD
View
B
Retailer 9
-
£5,970 GBP
A$12,325 AUD
View
B+
Retailer 10
-
£6,684 GBP
$8,969 USD
View
Retailer 11
-
£6,942 GBP
$9,316 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
£8,020 GBP
$10,762 USD
View
Retailer 13
-
£10,025 GBP
SGD 18,180 SGD
View
Price last confirmed 7 days ago
B
Retailer 14
-
£11,249 GBP
$15,096 USD
View
Most Expensive
Brilliant Earth
18017656A · Oct 26
£14,539 GBP
$19,510 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from £2,989 GBPSave up to £8,260 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
12.01ct Heart
£2,989 GBP