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Cushion|Lab Grown|IGI

4.08ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG830689146

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG830689146

Diamond specifications and retailer prices

From HK$8,356 HKD
$1,065 USD
As of November 2, 2026
Save HK$17,811 HKD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$26,167 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 4.08ct lab-grown cushion diamond

This 4.08ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG830689146 or 830689146. Listed at 8 retailers as of November 1, 2026, with prices from HK$8,356 to HK$26,167, a HK$17,811 spread on the same certified stone. MOH London lists it at HK$26,167. 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

4.08
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830689146
Dimensions11.91 × 8.45 × 5.51 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.91 mm8.45 mm4.08 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830689146
Side View
Table 53.0%Crown 40.6°Girdle: MED-STKPavilion 36.3°Culet: LargeDepth 65.2%

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: Nov 2
Current: HK$26,167 HKD|Low: HK$6,983 HKD|High: HK$26,516 HKD|Avg: HK$15,685 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4HK$6,983 HKD
Retailer 3HK$8,356 HKD
Retailer 8HK$9,957 HKD
Retailer 2HK$10,697 HKD
Retailer 5HK$11,291 HKD
Retailer 6HK$23,497 HKD
Retailer 7HK$24,104 HKD
MOH LondonHK$26,167 HKD

41 data points across 8 retailers

8 retailersHK$8,356 HKD to HK$26,167 HKD

Retailer 1
-
HK$6,983 HKD
$890 USD
Price last confirmed 21 days ago
A
Retailer 2
-
HK$8,356 HKD
$1,065 USD
View
B+
Retailer 3
-
HK$9,957 HKD
$1,269 USD
View
B+
Retailer 4
-
HK$10,697 HKD
£1,074 GBP
View
B+
Retailer 5
-
HK$11,291 HKD
$1,439 USD
View
B
Retailer 6
-
HK$23,497 HKD
SGD 4,047 SGD
View
B
Retailer 7
-
HK$24,104 HKD
$3,072 USD
View
Most Expensive
B
MOH London
LG830689146 · Nov 1
HK$26,167 HKD
£2,626 GBP
View
7 more retailers have this diamond
Prices start from HK$8,356 HKDSave up to HK$17,811 HKD

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
4.08ct Cushion
HK$8,356 HKD