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Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG828654239

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG828654239

Diamond specifications and retailer prices

From HK$4,247 HKD
£426 GBP
As of November 1, 2026
Save HK$17,330 HKD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$21,577 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828654239 or 828654239. Listed at 15 retailers as of October 31, 2026, with prices from HK$4,247 to HK$21,577, a HK$17,330 spread on the same certified stone. Brilliant Earth lists it at HK$21,577. 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

3.09
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828654239
Dimensions9.16 × 8.85 × 5.46 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.16 mm8.85 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828654239
Side View
Table 66.0%Crown 35.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.7%

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 1
Current: HK$21,577 HKD|Low: HK$3,947 HKD|High: HK$21,577 HKD|Avg: HK$10,145 HKD
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
November 1, 2026
Retailer 6HK$3,947 HKD
Retailer 8HK$4,247 HKD
Retailer 15HK$4,982 HKD
Retailer 12HK$5,116 HKD
Retailer 9HK$6,205 HKD
Retailer 10HK$6,228 HKD
Retailer 3HK$8,032 HKD
Retailer 13HK$8,356 HKD
Retailer 4HK$8,571 HKD
Retailer 14HK$12,555 HKD
Retailer 11HK$13,346 HKD
Retailer 2HK$14,907 HKD
Retailer 7HK$15,787 HKD
Retailer 5HK$16,477 HKD
Brilliant EarthHK$21,577 HKD

26 data points across 15 retailers

15 retailersHK$4,247 HKD to HK$21,577 HKD

Retailer 1
-
HK$3,947 HKD
$503 USD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$4,247 HKD
£426 GBP
View
A
Retailer 3
-
HK$4,982 HKD
$635 USD
View
B+
Retailer 4
-
HK$5,116 HKD
$652 USD
View
A
Retailer 5
-
HK$6,205 HKD
£623 GBP
View
A
Retailer 6
-
HK$6,228 HKD
€756 EUR
View
A
Retailer 7
-
HK$8,032 HKD
A$1,575 AUD
View
A
Retailer 8
-
HK$8,356 HKD
$1,065 USD
View
A
Retailer 9
-
HK$8,571 HKD
ZAR 17,647 ZAR
View
B+
Retailer 10
-
HK$12,555 HKD
$1,600 USD
View
B+
Retailer 11
-
HK$13,346 HKD
$1,701 USD
View
B+
Retailer 12
-
HK$14,907 HKD
£1,496 GBP
View
Retailer 13
-
HK$15,787 HKD
SGD 2,719 SGD
View
Price last confirmed 25 days ago
Retailer 14
-
HK$16,477 HKD
$2,100 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
21721451A · Oct 31
HK$21,577 HKD
$2,750 USD
View
14 more retailers have this diamond
Prices start from HK$4,247 HKDSave up to HK$17,330 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
3.09ct Cushion
HK$4,247 HKD