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Heart|Lab Grown|IGI

1.23ct E VS1 Heart Lab Grown Diamond

EX • E/VS1 • IGI LG791637217

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG791637217

Diamond specifications and retailer prices

From £140 GBP
$188 USD
As of October 30, 2026
Save £723 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £863 GBP at Reve Diamonds · As of October 30, 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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG791637217 or 791637217. Listed at 18 retailers as of October 30, 2026, with prices from £140 to £863, a £723 spread on the same certified stone. Reve Diamonds lists it at £863. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791637217
Dimensions6.48 × 7.56 × 4.44 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.48 mm7.56 mm1.23 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791637217
Side View
Table 55.0%Crown 35.6°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 58.7%

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: Oct 30
Current: £619 GBP|Low: £140 GBP|High: £867 GBP|Avg: £406 GBP|-13.5%
Retailer 1
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Retailer 11
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Retailer 17
Reve Diamonds
October 30, 2026
Retailer 17£140 GBP
Retailer 8£157 GBP
Retailer 14£163 GBP
Retailer 3£175 GBP
Retailer 4£175 GBP
Retailer 16£219 GBP
Retailer 11£299 GBP
Retailer 9£307 GBP
Retailer 10£316 GBP
Retailer 6£333 GBP
Retailer 5£415 GBP
Retailer 12£425 GBP
Retailer 2£560 GBP
Retailer 15£562 GBP
Retailer 7£601 GBP
Retailer 1£619 GBP
Retailer 13£816 GBP
Reve Diamonds£863 GBP

38 data points across 18 retailers

18 retailers£140 GBP to £863 GBP

A
Cheapest Retailer
-
£140 GBP
$188 USD
A
Retailer 2
-
£157 GBP
$210 USD
View
Final sale: no returns
A
Retailer 3
-
£163 GBP
$218 USD
View
A
Retailer 4
-
£175 GBP
$234 USD
View
A
Retailer 5
-
£175 GBP
$234 USD
View
Retailer 6
-
£219 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
£299 GBP
ZAR 6,479 ZAR
View
A
Retailer 8
-
£307 GBP
$411 USD
View
A
Retailer 9
-
£316 GBP
View
A
Retailer 10
-
£333 GBP
$446 USD
View
B+
Retailer 11
-
£415 GBP
$556 USD
View
B+
Retailer 12
-
£425 GBP
A$877 AUD
View
B+
Retailer 13
-
£560 GBP
$751 USD
View
B
Retailer 14
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£562 GBP
$753 USD
View
B
Retailer 15
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£601 GBP
$805 USD
View
B
Retailer 16
-
£619 GBP
$830 USD
View
B
Retailer 17
-
£816 GBP
View
Most Expensive
B
Reve Diamonds
B955618CA · Oct 30
£863 GBP
$1,156 USD
View
17 more retailers have this diamond
Prices start from £140 GBPSave up to £723 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
£140 GBP