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Heart|Lab Grown|IGI

1.23ct D VS1 Heart Lab Grown Diamond

EX • D/VS1 • IGI LG650480412

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG650480412

Diamond specifications and retailer prices

From £191 GBP
As of November 4, 2026
Save £1,505 GBP (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,696 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG650480412 or 650480412. Listed at 17 retailers as of November 4, 2026, with prices from £191 to £1,696, a £1,505 spread on the same certified stone. Do Amore Diamonds lists it at £1,696. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650480412
Dimensions6.66 × 7.52 × 4.39 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.66 mm7.52 mm1.23 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650480412
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 58.4%

Caratlytics Score

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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 4
Current: £456 GBP|Low: £183 GBP|High: £1,059 GBP|Avg: £502 GBP|+2.2%
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
November 5, 2026
Retailer 11£191 GBP
Retailer 5£213 GBP
Retailer 2£221 GBP
Retailer 3£236 GBP
Retailer 12£236 GBP
Retailer 10£356 GBP
Retailer 14£395 GBP
Retailer 1£456 GBP
Retailer 4£479 GBP
Retailer 8£641 GBP
Retailer 9£727 GBP
Retailer 13£839 GBP
Retailer 6£1,015 GBP
Retailer 7£1,043 GBP

44 data points across 14 retailers

17 retailers£191 GBP to £1,696 GBP

A
Cheapest Retailer
-
£191 GBP
A
Retailer 2
-
£213 GBP
View
Final sale: no returns
A
Retailer 3
-
£221 GBP
View
A
Retailer 4
-
£236 GBP
View
Retailer 5
-
£236 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£285 GBP
View
A
Retailer 7
-
£356 GBP
View
B+
Retailer 8
-
£395 GBP
View
B+
Retailer 9
-
£456 GBP
View
B+
Retailer 10
-
£479 GBP
View
B+
Retailer 11
-
£641 GBP
View
B
Retailer 12
-
£727 GBP
View
B
Retailer 13
-
£839 GBP
View
B
Retailer 14
-
£962 GBP
View
B
Retailer 15
-
£1,018 GBP
View
B
Retailer 16
-
£1,043 GBP
View
Most Expensive
B
Do Amore Diamonds
27-C24E8FBC2 · Nov 4
£1,696 GBP
$2,290 USD
View
16 more retailers have this diamond
Prices start from £191 GBPSave up to £1,505 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
1.23ct Heart
£191 GBP