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Heart|Lab Grown|IGI

1.23ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG510193469

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG510193469

Diamond specifications and retailer prices

From £166 GBP
As of November 4, 2026
Save £1,427 GBP (90%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £1,593 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 LG510193469 or 510193469. Listed at 29 retailers as of November 4, 2026, with prices from £166 to £1,593, a £1,427 spread on the same certified stone. Do Amore Diamonds lists it at £1,593. 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 angle37.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510193469
Dimensions7.52 × 6.41 × 4.34 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.52 mm6.41 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510193469
Side View
Table 61.5%Crown 37.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 57.7%

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: Nov 4
Current: £427 GBP|Low: £166 GBP|High: £921 GBP|Avg: £476 GBP|+3.6%
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
November 5, 2026
Retailer 13£166 GBP
Retailer 11£193 GBP
Retailer 3£322 GBP
Retailer 4£385 GBP
Retailer 8£393 GBP
Retailer 1£427 GBP
Retailer 10£466 GBP
Retailer 5£501 GBP
Retailer 9£548 GBP
Retailer 6£557 GBP
Retailer 2£641 GBP
Retailer 12£664 GBP
Retailer 7£911 GBP

44 data points across 13 retailers

29 retailers£166 GBP to £1,593 GBP

A
Cheapest Retailer
-
£166 GBP
Retailer 2
-
£166 GBP
View
Price last confirmed 36 days ago
Retailer 3
-
£166 GBP
View
Price last confirmed 28 days ago
Retailer 4
-
£166 GBP
View
Price last confirmed 25 days ago
Retailer 5
-
£193 GBP
View
Price last confirmed 37 days ago
A
Retailer 6
-
£193 GBP
View
Final sale: no returns
Retailer 7
-
£204 GBP
View
Price last confirmed 39 days ago
Retailer 8
-
£206 GBP
View
Price last confirmed 33 days ago
Retailer 9
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£206 GBP
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Price last confirmed 26 days ago
A
Retailer 10
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£279 GBP
View
A
Retailer 11
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£322 GBP
View
A
Retailer 12
-
£322 GBP
View
B+
Retailer 13
-
£385 GBP
View
B+
Retailer 14
-
£393 GBP
View
B+
Retailer 15
-
£427 GBP
View
B+
Retailer 16
-
£466 GBP
View
B+
Retailer 17
-
£501 GBP
View
B+
Retailer 18
-
£548 GBP
View
B+
Retailer 19
-
£557 GBP
View
Retailer 20
-
£641 GBP
View
Price last confirmed 28 days ago
B
Retailer 21
-
£664 GBP
View
Retailer 22
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£731 GBP
View
Price last confirmed 26 days ago
B
Retailer 23
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£731 GBP
View
Retailer 24
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£731 GBP
View
Price last confirmed 36 days ago
B
Retailer 25
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£857 GBP
View
B
Retailer 26
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£911 GBP
View
B
Retailer 27
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£921 GBP
View
B
Retailer 28
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£941 GBP
View
Most Expensive
B
Do Amore Diamonds
27-26DD9B55D · Nov 4
£1,593 GBP
$2,150 USD
View
28 more retailers have this diamond
Prices start from £166 GBPSave up to £1,427 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
£166 GBP