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Cushion|Lab Grown|IGI

1.63ct E VS1 Cushion Lab Grown Diamond

EX • E/VS1 • IGI LG634481308

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

Certificate IGI LG634481308

Diamond specifications and retailer prices

From £213 GBP
$284 USD
As of October 28, 2026
Save £812 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,547 GBP at Brilliant Earth · As of October 22, 2026
View at Brilliant Earth

About this 1.63ct lab-grown cushion diamond

This 1.63ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG634481308 or 634481308. Listed at 18 retailers as of October 28, 2026, with a 381% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.63
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634481308
Dimensions6.85 × 6.85 × 4.47 mm
L/W Ratio1.00
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
6.85 mm6.85 mm1.63 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634481308
Side View
Table 64.0%Crown 35.1°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 65.3%

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 28
Current: £1,547 GBP|Low: £213 GBP|High: £1,547 GBP|Avg: £487 GBP
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
October 29, 2026
Retailer 6£213 GBP
Retailer 4£237 GBP
Retailer 10£278 GBP
Retailer 3£319 GBP
Retailer 12£319 GBP
Retailer 11£406 GBP
Retailer 8£428 GBP
Retailer 5£438 GBP
Retailer 7£444 GBP
Retailer 2£449 GBP
Retailer 13£551 GBP
Retailer 15£581 GBP
Retailer 14£822 GBP
Retailer 9£953 GBP
Brilliant Earth£1,547 GBP

41 data points across 15 retailers

18 retailers£213 GBP to £1,025 GBP

A
Cheapest Retailer
-
£213 GBP
$284 USD
Final sale: no returns
A
Retailer 2
-
£237 GBP
$315 USD
View
A
Retailer 3
-
£278 GBP
View
A
Retailer 4
-
£319 GBP
$425 USD
View
B+
Retailer 5
-
£319 GBP
$425 USD
View
A
Retailer 6
-
£406 GBP
ZAR 8,738 ZAR
View
A
Retailer 7
-
£428 GBP
€543 EUR
View
A
Retailer 8
-
£438 GBP
$583 USD
View
A
Retailer 9
-
£444 GBP
$591 USD
View
A
Retailer 10
-
£449 GBP
View
B+
Retailer 11
-
£549 GBP
A$1,124 AUD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
£551 GBP
A$1,129 AUD
View
B+
Retailer 13
-
£581 GBP
$774 USD
View
B
Retailer 14
-
£799 GBP
$1,064 USD
View
B+
Retailer 15
-
£822 GBP
$1,095 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
£953 GBP
View
B
Retailer 17
-
£1,025 GBP
$1,366 USD
View
Most Expensive
B
Brilliant Earth
21312401A · Oct 22
£1,547 GBP
$2,060 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from £213 GBPSave up to £812 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
1.63ct Cushion
£213 GBP