CaratHunter
Plans
Cushion|Lab Grown|IGI

1.04ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG778675378

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

Certificate IGI LG778675378

Diamond specifications and retailer prices

From £142 GBP
$190 USD
As of November 1, 2026
Save £1,138 GBP (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,280 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.04ct lab-grown cushion diamond

This 1.04ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778675378 or 778675378. Listed at 16 retailers as of October 28, 2026, with prices from £142 to £1,280, a £1,138 spread on the same certified stone. Queensmith lists it at £1,280. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.04
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778675378
Dimensions6.01 × 5.90 × 3.66 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.01 mm5.90 mm1.04 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778675378
Side View
Table 62.0%Crown 34.3°Girdle: STK-THKPavilion 36.4°Culet: NoneDepth 62.0%

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 1
Current: £280 GBP|Low: £142 GBP|High: £749 GBP|Avg: £367 GBP|+3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£142 GBP
Retailer 7£270 GBP
Retailer 5£273 GBP
Retailer 1£280 GBP
Retailer 11£310 GBP
Retailer 2£339 GBP
Retailer 9£377 GBP
Retailer 4£386 GBP
Retailer 10£396 GBP
Retailer 8£440 GBP
Retailer 6£739 GBP

41 data points across 11 retailers

16 retailers£142 GBP to £1,280 GBP

A
Cheapest Retailer
-
£142 GBP
$190 USD
Final sale: no returns
B+
Retailer 2
-
£215 GBP
$288 USD
View
A
Retailer 3
-
£252 GBP
$337 USD
View
A
Retailer 4
-
£270 GBP
€345 EUR
View
A
Retailer 5
-
£273 GBP
ZAR 5,910 ZAR
View
A
Retailer 6
-
£280 GBP
View
Retailer 7
-
£310 GBP
View
Price last confirmed 19 days ago
B+
Retailer 8
-
£339 GBP
$454 USD
View
B+
Retailer 9
-
£377 GBP
$505 USD
View
B+
Retailer 10
-
£386 GBP
A$795 AUD
View
B+
Retailer 11
-
£396 GBP
$531 USD
View
B+
Retailer 12
-
£440 GBP
$590 USD
View
B
Retailer 13
-
£549 GBP
$736 USD
View
B
Retailer 14
-
£739 GBP
View
B
Retailer 15
-
£822 GBP
$1,101 USD
View
Most Expensive
B
Queensmith
LG778675378 · Oct 28
£1,280 GBP
View
15 more retailers have this diamond
Prices start from £142 GBPSave up to £1,138 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
1.04ct Cushion
£142 GBP