CaratHunter
Plans
Cushion|Lab Grown|IGI

1.78ct H VVS2 Cushion Lab Grown Diamond

EX • H/VVS2 • IGI LG728521939

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG728521939

Diamond specifications and retailer prices

From £487 GBP
€621 EUR
As of October 29, 2026
Save £765 GBP (61%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,252 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.78ct lab-grown cushion diamond

This 1.78ct lab-grown cushion 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 LG728521939 or 728521939. Listed at 8 retailers as of October 26, 2026, with prices from £487 to £1,252, a £765 spread on the same certified stone. MOH London lists it at £1,252. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728521939
Dimensions6.94 × 6.90 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.94 mm6.90 mm1.78 ctH / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728521939
Side View
Table 61.0%Crown 45.5°Girdle: MED-THKPavilion 31.9°Culet: NoneDepth 65.6%

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: Oct 29
Current: £1,252 GBP|Low: £382 GBP|High: £1,265 GBP|Avg: £682 GBP|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10£382 GBP
Retailer 8£425 GBP
Retailer 2£487 GBP
Retailer 4£504 GBP
Retailer 5£511 GBP
Retailer 6£518 GBP
Retailer 7£836 GBP
Retailer 3£877 GBP
Retailer 9£1,035 GBP
MOH London£1,252 GBP

17 data points across 10 retailers

8 retailers£487 GBP to £1,252 GBP

Retailer 1
-
£382 GBP
HK$4,000 HKD
Price last confirmed 57 days ago
A
Retailer 2
-
£487 GBP
€621 EUR
View
A
Retailer 3
-
£504 GBP
$675 USD
View
A
Retailer 4
-
£511 GBP
$685 USD
View
A
Retailer 5
-
£518 GBP
$694 USD
View
B+
Retailer 6
-
£877 GBP
$1,175 USD
View
B
Retailer 7
-
£1,035 GBP
$1,387 USD
View
Most Expensive
B
MOH London
LG728521939 · Oct 26
£1,252 GBP
View
7 more retailers have this diamond
Prices start from £487 GBPSave up to £765 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 Cushion
£487 GBP