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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG825654747

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825654747

Diamond specifications and retailer prices

From £211 GBP
$283 USD
As of November 2, 2026
Save £893 GBP (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,105 GBP at With Clarity · As of November 1, 2026
View at With Clarity

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 LG825654747 or 825654747. Listed at 22 retailers as of November 1, 2026, with prices from £211 to £1,105, a £893 spread on the same certified stone. With Clarity lists it at £1,105. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825654747
Dimensions12.37 × 6.44 × 3.87 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.37 mm6.44 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825654747
Side View
Table 57.0%Crown 32.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £306 GBP|Low: £211 GBP|High: £1,116 GBP|Avg: £586 GBP|-3.1%
Retailer 1
Retailer 2
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Retailer 21
With Clarity
November 2, 2026
Retailer 10£211 GBP
Retailer 11£236 GBP
Retailer 7£246 GBP
Retailer 4£262 GBP
Retailer 6£262 GBP
Retailer 1£306 GBP
Retailer 2£381 GBP
Retailer 20£432 GBP
Retailer 15£452 GBP
Retailer 12£459 GBP
Retailer 8£520 GBP
Retailer 18£521 GBP
Retailer 19£610 GBP
Retailer 17£678 GBP
Retailer 3£811 GBP
Retailer 13£842 GBP
Retailer 5£843 GBP
Retailer 9£880 GBP
Retailer 21£922 GBP
Retailer 14£1,008 GBP
Retailer 16£1,050 GBP
With Clarity£1,105 GBP

22 data points across 22 retailers

22 retailers£211 GBP to £1,105 GBP

A
Cheapest Retailer
-
£211 GBP
$283 USD
A
Retailer 2
-
£236 GBP
$316 USD
View
Final sale: no returns
A
Retailer 3
-
£246 GBP
$329 USD
View
Retailer 4
-
£262 GBP
$351 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£262 GBP
$351 USD
View
A
Retailer 6
-
£306 GBP
View
A
Retailer 7
-
£381 GBP
$510 USD
View
A
Retailer 8
-
£432 GBP
$579 USD
View
A
Retailer 9
-
£452 GBP
ZAR 9,785 ZAR
View
A
Retailer 10
-
£459 GBP
View
A
Retailer 11
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£520 GBP
$697 USD
View
A
Retailer 12
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£521 GBP
$698 USD
View
A
Retailer 13
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£610 GBP
A$1,257 AUD
View
A
Retailer 14
-
£678 GBP
$908 USD
View
Retailer 15
-
£811 GBP
A$1,672 AUD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£842 GBP
SGD 1,524 SGD
View
B+
Retailer 17
-
£843 GBP
$1,129 USD
View
B+
Retailer 18
-
£880 GBP
$1,180 USD
View
B+
Retailer 19
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£922 GBP
$1,235 USD
View
B+
Retailer 20
-
£1,008 GBP
$1,351 USD
View
B+
Retailer 21
-
£1,050 GBP
View
Most Expensive
B
With Clarity
825654747 · Nov 1
£1,105 GBP
$1,480 USD
View
21 more retailers have this diamond
Prices start from £211 GBPSave up to £893 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
£211 GBP