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Cushion|Lab Grown|IGI

3.00ct H SI1 Cushion Lab Grown Diamond

ID • H/SI1 • IGI LG789630414

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG789630414

Diamond specifications and retailer prices

From £443 GBP
$594 USD
As of October 31, 2026
Save £1,610 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,053 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 3ct lab-grown cushion diamond

This 3ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG789630414 or 789630414. Listed at 10 retailers as of October 25, 2026, with prices from £443 to £2,053, a £1,610 spread on the same certified stone. MOH London lists it at £2,053. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.00
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789630414
Dimensions11.44 × 7.34 × 4.51 mm
L/W Ratio1.56
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.44 mm7.34 mm3.00 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789630414
Side View
Table 60.0%Crown 32.8°Girdle: STK-THKPavilion 38°Culet: LargeDepth 61.4%

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 31
Current: £2,053 GBP|Low: £343 GBP|High: £2,702 GBP|Avg: £1,154 GBP|-12.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9£443 GBP
Retailer 7£491 GBP
Retailer 4£567 GBP
Retailer 8£658 GBP
Retailer 3£752 GBP
Retailer 6£755 GBP
Retailer 5£811 GBP
Retailer 2£1,485 GBP
Retailer 10£1,596 GBP
MOH London£2,053 GBP

21 data points across 10 retailers

10 retailers£443 GBP to £2,053 GBP

A
Cheapest Retailer
-
£443 GBP
$594 USD
Final sale: no returns
Retailer 2
-
£491 GBP
$658 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£567 GBP
$760 USD
View
B+
Retailer 4
-
£658 GBP
$882 USD
View
A
Retailer 5
-
£752 GBP
€960 EUR
View
A
Retailer 6
-
£755 GBP
$1,011 USD
View
A
Retailer 7
-
£811 GBP
$1,087 USD
View
B+
Retailer 8
-
£1,485 GBP
$1,990 USD
View
B+
Retailer 9
-
£1,596 GBP
$2,138 USD
View
Most Expensive
B
MOH London
LG789630414 · Oct 25
£2,053 GBP
View
9 more retailers have this diamond
Prices start from £443 GBPSave up to £1,610 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
3.00ct Cushion
£443 GBP