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Cushion|Lab Grown|IGI

3.09ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG689542466

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

Certificate IGI LG689542466

Diamond specifications and retailer prices

From HK$4,551 HKD
$580 USD
As of October 31, 2026
Save HK$46,525 HKD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$51,076 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG689542466 or 689542466. Listed at 20 retailers as of October 31, 2026, with prices from HK$4,551 to HK$51,076, a HK$46,525 spread on the same certified stone. Brilliant Earth lists it at HK$51,076. 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
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689542466
Dimensions8.24 × 8.24 × 5.65 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm8.24 mm3.09 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689542466
Side View
Table 65.0%Crown 37.4°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 68.6%

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 31
Current: HK$51,076 HKD|Low: HK$4,456 HKD|High: HK$51,076 HKD|Avg: HK$13,419 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 20HK$4,551 HKD
Retailer 11HK$4,943 HKD
Retailer 9HK$5,523 HKD
Retailer 14HK$5,806 HKD
Retailer 4HK$6,575 HKD
Retailer 19HK$7,265 HKD
Retailer 13HK$7,530 HKD
Retailer 2HK$7,810 HKD
Retailer 15HK$10,643 HKD
Retailer 16HK$10,844 HKD
Retailer 17HK$11,431 HKD
Retailer 18HK$11,808 HKD
Retailer 12HK$14,468 HKD
Retailer 8HK$15,972 HKD
Retailer 3HK$16,390 HKD
Retailer 6HK$17,327 HKD
Retailer 5HK$18,053 HKD
Retailer 10HK$19,353 HKD
Retailer 7HK$21,154 HKD
Brilliant EarthHK$51,076 HKD

35 data points across 20 retailers

20 retailersHK$4,551 HKD to HK$51,076 HKD

A
Cheapest Retailer
-
HK$4,551 HKD
$580 USD
Final sale: no returns
Retailer 2
-
HK$4,943 HKD
$630 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
HK$5,523 HKD
View
A
Retailer 4
-
HK$5,806 HKD
$740 USD
View
B+
Retailer 5
-
HK$6,575 HKD
$838 USD
View
A
Retailer 6
-
HK$7,265 HKD
$926 USD
View
A
Retailer 7
-
HK$7,530 HKD
€914 EUR
View
A
Retailer 8
-
HK$7,810 HKD
£784 GBP
View
A
Retailer 9
-
HK$10,643 HKD
A$2,087 AUD
View
Retailer 10
-
HK$10,844 HKD
ZAR 22,328 ZAR
View
Price last confirmed 8 days ago
A
Retailer 11
-
HK$11,431 HKD
$1,457 USD
View
A
Retailer 12
-
HK$11,808 HKD
$1,505 USD
View
Retailer 13
-
HK$14,468 HKD
£1,452 GBP
View
Price last confirmed 19 days ago
B+
Retailer 14
-
HK$15,972 HKD
SGD 2,751 SGD
View
B+
Retailer 15
-
HK$16,390 HKD
$2,089 USD
View
B+
Retailer 16
-
HK$17,327 HKD
$2,208 USD
View
B+
Retailer 17
-
HK$18,053 HKD
$2,301 USD
View
Retailer 18
-
HK$19,353 HKD
A$3,795 AUD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
HK$21,154 HKD
£2,123 GBP
View
Most Expensive
B
Brilliant Earth
20259914A · Oct 31
HK$51,076 HKD
$6,510 USD
View
19 more retailers have this diamond
Prices start from HK$4,551 HKDSave up to HK$46,525 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$4,551 HKD