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Heart|Lab Grown|IGI

1.23ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG705541860

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG705541860

Diamond specifications and retailer prices

From £147 GBP
As of November 4, 2026
Save £734 GBP (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £881 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 LG705541860 or 705541860. Listed at 22 retailers as of November 4, 2026, with prices from £147 to £881, a £734 spread on the same certified stone. Reve Diamonds lists it at £881. 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 angle36.3°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG705541860
Dimensions7.51 × 6.88 × 4.20 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.51 mm6.88 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG705541860
Side View
Table 66.0%Crown 36.3°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 55.9%

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: £331 GBP|Low: £147 GBP|High: £881 GBP|Avg: £421 GBP|+1.6%
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Retailer 21
Reve Diamonds
November 5, 2026
Retailer 3£147 GBP
Retailer 9£165 GBP
Retailer 10£171 GBP
Retailer 6£183 GBP
Retailer 8£183 GBP
Retailer 2£245 GBP
Retailer 7£246 GBP
Retailer 18£299 GBP
Retailer 17£315 GBP
Retailer 1£331 GBP
Retailer 21£354 GBP
Retailer 5£364 GBP
Retailer 16£445 GBP
Retailer 15£475 GBP
Retailer 19£556 GBP
Retailer 4£587 GBP
Retailer 20£593 GBP
Retailer 13£594 GBP
Retailer 11£606 GBP
Retailer 14£627 GBP
Retailer 12£851 GBP
Reve Diamonds£881 GBP

22 data points across 22 retailers

22 retailers£147 GBP to £881 GBP

A
Cheapest Retailer
-
£147 GBP
A
Retailer 2
-
£165 GBP
View
Final sale: no returns
A
Retailer 3
-
£171 GBP
View
Retailer 4
-
£183 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£183 GBP
View
A
Retailer 6
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£208 GBP
View
B+
Retailer 7
-
£246 GBP
View
A
Retailer 8
-
£299 GBP
View
A
Retailer 9
-
£315 GBP
View
B+
Retailer 10
-
£331 GBP
View
B+
Retailer 11
-
£354 GBP
View
B+
Retailer 12
-
£364 GBP
View
B+
Retailer 13
-
£445 GBP
View
B+
Retailer 14
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£475 GBP
View
B+
Retailer 15
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£556 GBP
View
B
Retailer 16
-
£587 GBP
View
Retailer 17
-
£593 GBP
View
Price last confirmed 7 days ago
B
Retailer 18
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£594 GBP
View
B
Retailer 19
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£619 GBP
View
B
Retailer 20
-
£627 GBP
View
B
Retailer 21
-
£851 GBP
View
Most Expensive
B
Reve Diamonds
0ED71B711 · Nov 4
£881 GBP
$1,190 USD
View
21 more retailers have this diamond
Prices start from £147 GBPSave up to £734 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
£147 GBP