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Oval|Lab Grown|IGI

1.23ct D VS1 Oval Lab Grown Diamond

ID • D/VS1 • IGI LG817661900

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG817661900

Diamond specifications and retailer prices

From £168 GBP
As of November 3, 2026
Save £1,447 GBP (90%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,615 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.23ct lab-grown oval diamond

This 1.23ct lab-grown oval 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 LG817661900 or 817661900. Listed at 19 retailers as of November 3, 2026, with prices from £168 to £1,615, a £1,447 spread on the same certified stone. Do Amore Diamonds lists it at £1,615. 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 angle33.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817661900
Dimensions8.94 × 5.97 × 3.71 mm
L/W Ratio1.50
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.94 mm5.97 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817661900
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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 3
Current: £434 GBP|Low: £125 GBP|High: £934 GBP|Avg: £420 GBP|+3.7%
Retailer 1
Retailer 2
Retailer 3
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Retailer 6
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Retailer 11
Retailer 12
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Retailer 16
November 5, 2026
Retailer 8£125 GBP
Retailer 14£168 GBP
Retailer 6£187 GBP
Retailer 4£195 GBP
Retailer 7£209 GBP
Retailer 16£209 GBP
Retailer 9£307 GBP
Retailer 2£355 GBP
Retailer 1£434 GBP
Retailer 5£443 GBP
Retailer 12£511 GBP
Retailer 10£564 GBP
Retailer 13£673 GBP
Retailer 3£740 GBP
Retailer 15£796 GBP
Retailer 11£922 GBP

44 data points across 16 retailers

19 retailers£168 GBP to £1,615 GBP

A
Cheapest Retailer
-
£168 GBP
A
Retailer 2
-
£187 GBP
View
Final sale: no returns
A
Retailer 3
-
£195 GBP
View
Retailer 4
-
£209 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
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£209 GBP
View
A
Retailer 6
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£280 GBP
View
A
Retailer 7
-
£307 GBP
View
A
Retailer 8
-
£355 GBP
View
B+
Retailer 9
-
£434 GBP
View
B+
Retailer 10
-
£443 GBP
View
Retailer 11
-
£511 GBP
View
Price last confirmed 18 days ago
B+
Retailer 12
-
£564 GBP
View
B
Retailer 13
-
£673 GBP
View
B
Retailer 14
-
£740 GBP
View
B
Retailer 15
-
£796 GBP
View
B
Retailer 16
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£867 GBP
View
B
Retailer 17
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£922 GBP
View
B
Retailer 18
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£947 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B97F3F9B6 · Nov 4
£1,615 GBP
$2,180 USD
View
18 more retailers have this diamond
Prices start from £168 GBPSave up to £1,447 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 Oval
£168 GBP