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Cushion|Lab Grown|IGI

0.99ct E VS1 Cushion Lab Grown Diamond

EX • E/VS1 • IGI LG631470315

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG631470315

Diamond specifications and retailer prices

From £242 GBP
€307 EUR
As of October 29, 2026
Save £209 GBP (46%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £640 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG631470315 or 631470315. Listed at 6 retailers as of October 29, 2026, with a 86% 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

0.99
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631470315
Dimensions5.98 × 5.74 × 3.73 mm
L/W Ratio1.04
Girdle conditionFaceted
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
5.98 mm5.74 mm0.99 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631470315
Side View
Table 59.0%Crown 33.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 65.0%

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: Oct 29
Current: £640 GBP|Low: £176 GBP|High: £644 GBP|Avg: £430 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 4£176 GBP
Retailer 2£242 GBP
Retailer 8£271 GBP
Retailer 3£339 GBP
Retailer 6£442 GBP
Retailer 5£462 GBP
Retailer 7£533 GBP
Retailer 9£613 GBP
MOH London£640 GBP

22 data points across 9 retailers

6 retailers£242 GBP to £451 GBP

A
Retailer 1
-
£176 GBP
Price last confirmed 12 days ago
A
Retailer 2
-
£242 GBP
€307 EUR
View
A
Retailer 3
-
£339 GBP
A$694 AUD
View
B+
Retailer 4
-
£451 GBP
$601 USD
View
B+
Retailer 5
-
£462 GBP
SGD 831 SGD
View
Price last confirmed 16 days ago
Most Expensive
B
MOH London
LG631470315 · Oct 21
£640 GBP
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from £242 GBPSave up to £209 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
0.99ct Cushion
£242 GBP