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Heart|Lab Grown|IGI

1.23ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG662412809

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG662412809

Diamond specifications and retailer prices

From £161 GBP
As of November 4, 2026
Save £765 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £927 GBP at Reve Diamonds · As of November 4, 2026
View at Reve 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 LG662412809 or 662412809. Listed at 19 retailers as of November 4, 2026, with prices from £161 to £927, a £765 spread on the same certified stone. Reve Diamonds lists it at £927. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662412809
Dimensions7.57 × 6.43 × 4.51 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.57 mm6.43 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662412809
Side View
Table 55.0%Crown 34.3°Girdle: MediumPavilion 39.6°Culet: NoneDepth 59.6%

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 4
Current: £368 GBP|Low: £161 GBP|High: £937 GBP|Avg: £457 GBP|+16.4%
Retailer 1
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Reve Diamonds
November 5, 2026
Retailer 12£161 GBP
Retailer 14£181 GBP
Retailer 18£187 GBP
Retailer 6£204 GBP
Retailer 7£204 GBP
Retailer 11£267 GBP
Retailer 17£342 GBP
Retailer 4£353 GBP
Retailer 9£360 GBP
Retailer 1£368 GBP
Retailer 8£439 GBP
Retailer 2£499 GBP
Retailer 10£581 GBP
Retailer 3£637 GBP
Retailer 13£644 GBP
Retailer 16£646 GBP
Retailer 15£683 GBP
Retailer 5£818 GBP
Reve Diamonds£927 GBP

35 data points across 19 retailers

19 retailers£161 GBP to £927 GBP

A
Cheapest Retailer
-
£161 GBP
A
Retailer 2
-
£181 GBP
View
Final sale: no returns
A
Retailer 3
-
£187 GBP
View
A
Retailer 4
-
£204 GBP
View
Retailer 5
-
£204 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£267 GBP
View
B+
Retailer 7
-
£342 GBP
View
B+
Retailer 8
-
£353 GBP
View
B+
Retailer 9
-
£360 GBP
View
B+
Retailer 10
-
£368 GBP
View
B+
Retailer 11
-
£439 GBP
View
B+
Retailer 12
-
£499 GBP
View
B
Retailer 13
-
£581 GBP
View
B
Retailer 14
-
£637 GBP
View
B
Retailer 15
-
£644 GBP
View
B
Retailer 16
-
£646 GBP
View
B
Retailer 17
-
£683 GBP
View
B
Retailer 18
-
£818 GBP
View
Most Expensive
B
Reve Diamonds
50A7CF060 · Nov 4
£927 GBP
$1,251 USD
View
18 more retailers have this diamond
Prices start from £161 GBPSave up to £765 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
£161 GBP