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Cushion|Lab Grown|IGI

3.00ct J SI2 Cushion Lab Grown Diamond

VG • J/SI2 • IGI LG432012446

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

Certificate IGI LG432012446

Diamond specifications and retailer prices

From £1,418 GBP
$1,900 USD
As of October 31, 2026
Save £6,781 GBP (83%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £8,199 GBP at MOH London · As of October 29, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG432012446 or 432012446. Listed at 5 retailers as of October 29, 2026, with prices from £1,418 to £8,199, a £6,781 spread on the same certified stone. MOH London lists it at £8,199. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.00
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG432012446
Dimensions8.56 × 8.26 × 5.20 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.56 mm8.26 mm3.00 ctJ / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG432012446
Side View
Table 63.5%Crown 33.2°Girdle: THK-ETKPavilion 37.5°Culet: NoneDepth 63.0%

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 31
Current: £8,199 GBP|Low: £1,418 GBP|High: £8,264 GBP|Avg: £4,669 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2£1,418 GBP
Retailer 5£3,803 GBP
Retailer 3£3,938 GBP
Retailer 6£4,373 GBP
Retailer 4£6,093 GBP
MOH London£8,199 GBP

14 data points across 6 retailers

5 retailers£1,418 GBP to £8,199 GBP

A
Cheapest Retailer
-
£1,418 GBP
$1,900 USD
B+
Retailer 2
-
£3,803 GBP
$5,095 USD
View
Final sale: no returns
Retailer 3
-
£3,938 GBP
$5,277 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£6,093 GBP
$8,164 USD
View
Most Expensive
B
MOH London
LG432012446 · Oct 29
£8,199 GBP
View
4 more retailers have this diamond
Prices start from £1,418 GBPSave up to £6,781 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
£1,418 GBP