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Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG835610851

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG835610851

Diamond specifications and retailer prices

From HK$4,403 HKD
£442 GBP
As of October 27, 2026
Save HK$29,492 HKD (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$33,895 HKD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG835610851 or 835610851. Listed at 21 retailers as of October 27, 2026, with prices from HK$4,403 to HK$33,895, a HK$29,492 spread on the same certified stone. Brilliant Earth lists it at HK$33,895. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.09
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835610851
Dimensions10.69 × 8.23 × 5.40 mm
L/W Ratio1.30
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.69 mm8.23 mm4.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835610851
Side View
Table 62.0%Crown 34.9°Girdle: MED-STKPavilion 33°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
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$33,895 HKD|Low: HK$4,388 HKD|High: HK$49,038 HKD|Avg: HK$14,943 HKD|-30.9%
Brilliant Earth
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 28, 2026
Retailer 17HK$4,403 HKD
Retailer 7HK$4,747 HKD
Retailer 3HK$5,725 HKD
Retailer 15HK$6,316 HKD
Retailer 16HK$7,645 HKD
Retailer 8HK$7,775 HKD
Retailer 9HK$8,121 HKD
Retailer 18HK$8,140 HKD
Retailer 21HK$10,370 HKD
Retailer 20HK$10,618 HKD
Retailer 6HK$11,769 HKD
Retailer 4HK$12,467 HKD
Retailer 13HK$16,425 HKD
Retailer 5HK$16,932 HKD
Retailer 10HK$17,056 HKD
Retailer 11HK$17,071 HKD
Retailer 19HK$21,972 HKD
Retailer 2HK$22,801 HKD
Retailer 14HK$23,842 HKD
Retailer 12HK$24,166 HKD
Brilliant EarthHK$33,895 HKD

25 data points across 21 retailers

21 retailersHK$4,403 HKD to HK$33,895 HKD

A
Cheapest Retailer
-
HK$4,403 HKD
£442 GBP
A
Retailer 2
-
HK$5,725 HKD
View
Retailer 3
-
HK$6,316 HKD
$805 USD
View
Price last confirmed 5 days ago
A
Retailer 4
-
HK$7,645 HKD
€928 EUR
View
A
Retailer 5
-
HK$7,775 HKD
$991 USD
View
B+
Retailer 6
-
HK$8,121 HKD
$1,035 USD
View
A
Retailer 7
-
HK$8,140 HKD
£817 GBP
View
Retailer 8
-
HK$10,370 HKD
ZAR 21,352 ZAR
View
Price last confirmed 9 days ago
Retailer 9
-
HK$10,618 HKD
A$2,082 AUD
View
Price last confirmed 8 days ago
Retailer 10
-
HK$11,769 HKD
$1,500 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
HK$12,467 HKD
$1,589 USD
View
B+
Retailer 12
-
HK$16,425 HKD
SGD 2,829 SGD
View
Retailer 13
-
HK$16,740 HKD
£1,680 GBP
View
Price last confirmed 25 days ago
B+
Retailer 14
-
HK$16,932 HKD
$2,158 USD
View
Retailer 15
-
HK$17,056 HKD
$2,174 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
HK$17,071 HKD
$2,176 USD
View
Retailer 17
-
HK$21,972 HKD
£2,205 GBP
View
Price last confirmed 8 days ago
B+
Retailer 18
-
HK$22,801 HKD
$2,906 USD
View
Retailer 19
-
HK$23,842 HKD
A$4,675 AUD
View
Price last confirmed 25 days ago
Retailer 20
-
HK$24,166 HKD
$3,080 USD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21461864A · Oct 28
HK$33,895 HKD
$4,320 USD
View
20 more retailers have this diamond
Prices start from HK$4,403 HKDSave up to HK$29,492 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
4.09ct Cushion
HK$4,403 HKD