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Marquise|Lab Grown|IGI

1.23ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG760580811

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG760580811

Diamond specifications and retailer prices

From £451 GBP
As of November 4, 2026
Save £193 GBP (30%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,035 GBP at Yadav Diamonds · As of October 16, 2026
View at Yadav Diamonds

About this 1.23ct lab-grown marquise diamond

This 1.23ct lab-grown marquise 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 LG760580811 or 760580811. Listed at 15 retailers as of November 4, 2026, with a 43% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG760580811
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.37 mm7.13 mm1.23 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG760580811
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £451 GBP|Low: £176 GBP|High: £1,511 GBP|Avg: £586 GBP
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
Retailer 14
Retailer 15
Yadav Diamonds
November 1, 2026
Retailer 3£176 GBP
Retailer 4£262 GBP
Retailer 7£278 GBP
Retailer 10£366 GBP
Retailer 9£396 GBP
Retailer 2£431 GBP
Retailer 1£451 GBP
Retailer 15£522 GBP
Retailer 13£537 GBP
Retailer 14£619 GBP
Retailer 8£628 GBP
Retailer 12£644 GBP
Retailer 6£818 GBP
Retailer 11£872 GBP
Yadav Diamonds£1,035 GBP
Retailer 5£1,511 GBP

28 data points across 16 retailers

15 retailers£451 GBP to £644 GBP

Retailer 1
-
£157 GBP
Price last confirmed 27 days ago
Retailer 2
-
£182 GBP
View
Price last confirmed 20 days ago
Retailer 3
-
£195 GBP
View
Price last confirmed 19 days ago
Retailer 4
-
£195 GBP
View
Price last confirmed 32 days ago
Retailer 5
-
£262 GBP
View
Price last confirmed 19 days ago
Retailer 6
-
£366 GBP
View
Price last confirmed 22 days ago
Retailer 7
-
£396 GBP
View
Price last confirmed 19 days ago
B+
Retailer 8
-
£451 GBP
View
Retailer 9
-
£537 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£619 GBP
View
Price last confirmed 33 days ago
B
Retailer 11
-
£644 GBP
View
Retailer 12
-
£691 GBP
View
Price last confirmed 35 days ago
Retailer 13
-
£818 GBP
View
Price last confirmed 20 days ago
Retailer 14
-
£872 GBP
View
Price last confirmed 24 days ago
Most Expensive
Yadav Diamonds
13264118 · Oct 16
£1,035 GBP
$1,397 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from £451 GBPSave up to £193 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.

B+
1.23ct Marquise
£451 GBP