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Cushion|Lab Grown|IGI

4.20ct F VVS1 Cushion Lab Grown Diamond

VG • F/VVS1 • IGI LG834617490

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG834617490

Diamond specifications and retailer prices

From HK$8,102 HKD
£813 GBP
As of October 27, 2026
Save HK$30,156 HKD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$43,193 HKD at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 4.2ct lab-grown cushion diamond

This 4.2ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG834617490 or 834617490. Listed at 14 retailers as of October 27, 2026, with a 372% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.20
Carat
F
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG834617490
Dimensions11.28 × 8.08 × 5.50 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm8.08 mm4.20 ctF / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG834617490
Side View
Table 67.0%Crown 41.3°Girdle: STK-THKPavilion 34.6°Culet: NoneDepth 68.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: HK$43,193 HKD|Low: HK$7,713 HKD|High: HK$43,664 HKD|Avg: HK$21,383 HKD|-1.1%
Rare Carat
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 27, 2026
Retailer 13HK$7,713 HKD
Retailer 5HK$8,042 HKD
Retailer 8HK$8,102 HKD
Retailer 15HK$9,376 HKD
Retailer 12HK$11,440 HKD
Retailer 2HK$12,119 HKD
Retailer 10HK$12,211 HKD
Retailer 3HK$16,900 HKD
Retailer 4HK$17,217 HKD
Retailer 6HK$25,170 HKD
Retailer 11HK$29,973 HKD
Retailer 14HK$31,394 HKD
Retailer 9HK$38,258 HKD
Retailer 7HK$40,223 HKD
Rare CaratHK$43,193 HKD

34 data points across 15 retailers

14 retailersHK$8,102 HKD to HK$38,258 HKD

Retailer 1
-
HK$8,042 HKD
$1,025 USD
Price last confirmed 16 days ago
A
Retailer 2
-
HK$8,102 HKD
£813 GBP
View
Retailer 3
-
HK$9,376 HKD
$1,195 USD
View
Price last confirmed 5 days ago
Retailer 4
-
HK$11,440 HKD
$1,458 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
HK$12,119 HKD
€1,471 EUR
View
A
Retailer 6
-
HK$12,211 HKD
£1,225 GBP
View
Retailer 7
-
HK$16,900 HKD
ZAR 34,798 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
HK$17,217 HKD
A$3,376 AUD
View
Price last confirmed 12 days ago
Retailer 9
-
HK$25,170 HKD
$3,208 USD
View
Price last confirmed 7 days ago
B
Retailer 10
-
HK$29,973 HKD
£3,008 GBP
View
B
Retailer 11
-
HK$31,394 HKD
SGD 5,407 SGD
View
B
Retailer 12
-
HK$38,258 HKD
$4,876 USD
View
Retailer 13
-
HK$40,223 HKD
A$7,887 AUD
View
Price last confirmed 25 days ago
Most Expensive
Rare Carat
CN265-21A · Oct 19
HK$43,193 HKD
$5,505 USD
View
Price last confirmed 15 days ago
13 more retailers have this diamond
Prices start from HK$8,102 HKDSave up to HK$30,156 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
4.20ct Cushion
HK$8,102 HKD