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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG762573614

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762573614

Diamond specifications and retailer prices

From £213 GBP
$286 USD
As of November 2, 2026
Save £964 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,177 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG762573614 or 762573614. Listed at 22 retailers as of November 2, 2026, with prices from £213 to £1,177, a £964 spread on the same certified stone. Brilliant Earth lists it at £1,177. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762573614
Dimensions12.87 × 6.36 × 3.84 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.87 mm6.36 mm1.78 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762573614
Side View
Table 59.0%Crown 32.2°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 60.4%

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: Nov 2
Current: £1,177 GBP|Low: £205 GBP|High: £1,244 GBP|Avg: £588 GBP|-5.4%
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
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Retailer 17
November 2, 2026
Retailer 17£213 GBP
Retailer 7£247 GBP
Retailer 3£265 GBP
Retailer 8£265 GBP
Retailer 4£310 GBP
Retailer 15£380 GBP
Retailer 10£456 GBP
Retailer 2£463 GBP
Retailer 16£470 GBP
Retailer 13£483 GBP
Retailer 14£615 GBP
Retailer 11£805 GBP
Retailer 6£812 GBP
Retailer 5£850 GBP
Retailer 9£1,016 GBP
Retailer 12£1,065 GBP
Brilliant Earth£1,177 GBP

35 data points across 17 retailers

22 retailers£213 GBP to £1,177 GBP

A
Cheapest Retailer
-
£213 GBP
$286 USD
A
Retailer 2
-
£247 GBP
$332 USD
View
Retailer 3
-
£265 GBP
$355 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£265 GBP
$355 USD
View
Retailer 5
-
£310 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
£356 GBP
$478 USD
View
A
Retailer 7
-
£380 GBP
$510 USD
View
A
Retailer 8
-
£456 GBP
ZAR 9,878 ZAR
View
A
Retailer 9
-
£463 GBP
View
Retailer 10
-
£470 GBP
€601 EUR
View
Price last confirmed 8 days ago
A
Retailer 11
-
£483 GBP
A$998 AUD
View
A
Retailer 12
-
£520 GBP
$698 USD
View
A
Retailer 13
-
£522 GBP
$701 USD
View
A
Retailer 14
-
£615 GBP
A$1,269 AUD
View
B+
Retailer 15
-
£805 GBP
A$1,661 AUD
View
B+
Retailer 16
-
£812 GBP
$1,089 USD
View
B+
Retailer 17
-
£850 GBP
$1,140 USD
View
B+
Retailer 18
-
£886 GBP
$1,189 USD
View
B
Retailer 19
-
£1,016 GBP
$1,364 USD
View
B+
Retailer 20
-
£1,065 GBP
View
B
Retailer 21
-
£1,104 GBP
$1,481 USD
View
Most Expensive
B
Brilliant Earth
20624835A · Nov 2
£1,177 GBP
$1,580 USD
View
21 more retailers have this diamond
Prices start from £213 GBPSave up to £964 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
1.78ct Marquise
£213 GBP