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Marquise|Lab Grown|IGI

1.45ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG778628373

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG778628373

Diamond specifications and retailer prices

From £178 GBP
$236 USD
As of October 27, 2026
Save £1,207 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,385 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.45ct lab-grown marquise diamond

This 1.45ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778628373 or 778628373. Listed at 19 retailers as of October 27, 2026, with prices from £178 to £1,385, a £1,207 spread on the same certified stone. Brilliant Earth lists it at £1,385. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778628373
Dimensions5.93 × 5.93 × 3.70 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.93 mm5.93 mm1.45 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778628373
Side View
Table 60.0%Crown 35.7°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 62.4%

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 27
Current: £1,385 GBP|Low: £141 GBP|High: £1,498 GBP|Avg: £528 GBP|-7.5%
Brilliant Earth
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
October 29, 2026
Retailer 3£178 GBP
Retailer 2£198 GBP
Retailer 4£221 GBP
Retailer 6£221 GBP
Retailer 5£373 GBP
Retailer 10£378 GBP
Retailer 9£414 GBP
Retailer 13£454 GBP
Retailer 7£464 GBP
Retailer 11£537 GBP
Retailer 15£580 GBP
Retailer 8£732 GBP
Retailer 14£760 GBP
Retailer 12£884 GBP
Brilliant Earth£1,385 GBP

43 data points across 15 retailers

19 retailers£178 GBP to £1,385 GBP

A
Cheapest Retailer
-
£178 GBP
$236 USD
A
Retailer 2
-
£198 GBP
$263 USD
View
Final sale: no returns
A
Retailer 3
-
£206 GBP
$274 USD
View
A
Retailer 4
-
£221 GBP
$293 USD
View
A
Retailer 5
-
£221 GBP
$293 USD
View
A
Retailer 6
-
£373 GBP
$495 USD
View
A
Retailer 7
-
£378 GBP
ZAR 8,121 ZAR
View
A
Retailer 8
-
£414 GBP
View
B+
Retailer 9
-
£454 GBP
A$928 AUD
View
B+
Retailer 10
-
£464 GBP
$617 USD
View
B+
Retailer 11
-
£485 GBP
$645 USD
View
B+
Retailer 12
-
£537 GBP
A$1,098 AUD
View
B
Retailer 13
-
£580 GBP
$771 USD
View
B
Retailer 14
-
£708 GBP
$941 USD
View
B+
Retailer 15
-
£732 GBP
A$1,496 AUD
View
B
Retailer 16
-
£747 GBP
$993 USD
View
B
Retailer 17
-
£760 GBP
$1,010 USD
View
B
Retailer 18
-
£884 GBP
View
Most Expensive
B
Brilliant Earth
18170094A · Oct 28
£1,385 GBP
$1,840 USD
View
18 more retailers have this diamond
Prices start from £178 GBPSave up to £1,207 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
1.45ct Marquise
£178 GBP