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Princess|Lab Grown|IGI

1.78ct H VVS2 Princess Lab Grown Diamond

ID • H/VVS2 • IGI LG591336548

Shape and cutting style on the report: Princess cut

Certificate IGI LG591336548

Diamond specifications and retailer prices

From £287 GBP
$385 USD
As of October 30, 2026
Save £698 GBP (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £985 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.78ct lab-grown princess diamond

This 1.78ct lab-grown princess sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG591336548 or 591336548. Listed at 9 retailers as of October 28, 2026, with prices from £287 to £985, a £698 spread on the same certified stone. Brilliant Earth lists it at £985. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
H
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591336548
Dimensions6.64 × 6.58 × 4.66 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.64 mm6.58 mm1.78 ctH / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591336548
Side View
Table 67.0%Crown 38.9°Girdle: MediumPavilion 37.8°Culet: NoneDepth 70.8%

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 30
Current: £985 GBP|Low: £210 GBP|High: £1,067 GBP|Avg: £563 GBP|-7.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
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Retailer 11
Retailer 12
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Retailer 17
October 29, 2026
Retailer 6£210 GBP
Retailer 13£287 GBP
Retailer 11£308 GBP
Retailer 2£342 GBP
Retailer 17£358 GBP
Retailer 9£358 GBP
Retailer 12£438 GBP
Retailer 5£470 GBP
Retailer 15£487 GBP
Retailer 16£500 GBP
Retailer 10£559 GBP
Retailer 8£722 GBP
Retailer 7£830 GBP
Retailer 14£846 GBP
Retailer 3£875 GBP
Retailer 4£961 GBP
Brilliant Earth£985 GBP

13 data points across 17 retailers

9 retailers£287 GBP to £985 GBP

B+
Cheapest Retailer
-
£287 GBP
$385 USD
A
Retailer 2
-
£308 GBP
$413 USD
View
Final sale: no returns
A
Retailer 3
-
£342 GBP
€437 EUR
View
A
Retailer 4
-
£438 GBP
$587 USD
View
Retailer 5
-
£475 GBP
$636 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
£500 GBP
$670 USD
View
B+
Retailer 7
-
£559 GBP
$749 USD
View
B+
Retailer 8
-
£864 GBP
$1,157 USD
View
Most Expensive
B
Brilliant Earth
14552614A · Oct 28
£985 GBP
$1,320 USD
View
8 more retailers have this diamond
Prices start from £287 GBPSave up to £698 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 Princess
£287 GBP