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Cushion|Lab Grown|IGI

4.73ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG591335348

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG591335348

Diamond specifications and retailer prices

From £578 GBP
$775 USD
As of October 31, 2026
Save £1,892 GBP (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,470 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.73ct lab-grown cushion diamond

This 4.73ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591335348 or 591335348. Listed at 12 retailers as of October 31, 2026, with prices from £578 to £2,470, a £1,892 spread on the same certified stone. Brilliant Earth lists it at £2,470. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.73
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591335348
Dimensions9.80 × 9.56 × 6.46 mm
L/W Ratio1.03
Girdle conditionFaceted
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
9.80 mm9.56 mm4.73 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591335348
Side View
Table 62.0%Crown 36.1°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
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 31
Current: £2,470 GBP|Low: £428 GBP|High: £2,552 GBP|Avg: £1,122 GBP|-3.2%
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
Retailer 15
November 1, 2026
Retailer 14£428 GBP
Retailer 12£475 GBP
Retailer 9£578 GBP
Retailer 7£624 GBP
Retailer 15£737 GBP
Retailer 8£749 GBP
Retailer 4£792 GBP
Retailer 11£946 GBP
Retailer 10£952 GBP
Retailer 5£1,103 GBP
Retailer 3£1,388 GBP
Retailer 6£1,546 GBP
Retailer 13£1,561 GBP
Retailer 2£1,984 GBP
Brilliant Earth£2,470 GBP

32 data points across 15 retailers

12 retailers£578 GBP to £2,470 GBP

Retailer 1
-
£475 GBP
$637 USD
Price last confirmed 15 days ago
A
Retailer 2
-
£578 GBP
$775 USD
View
B+
Retailer 3
-
£737 GBP
$988 USD
View
A
Retailer 4
-
£749 GBP
€956 EUR
View
A
Retailer 5
-
£792 GBP
$1,061 USD
View
A
Retailer 6
-
£946 GBP
ZAR 20,470 ZAR
View
A
Retailer 7
-
£952 GBP
A$1,963 AUD
View
A
Retailer 8
-
£1,103 GBP
$1,478 USD
View
B+
Retailer 9
-
£1,546 GBP
$2,072 USD
View
Retailer 10
-
£1,561 GBP
$2,092 USD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
£1,984 GBP
View
Most Expensive
B
Brilliant Earth
7737214A · Oct 31
£2,470 GBP
$3,310 USD
View
11 more retailers have this diamond
Prices start from £578 GBPSave up to £1,892 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
4.73ct Cushion
£578 GBP