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Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG776656912

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

Certificate IGI LG776656912

Diamond specifications and retailer prices

From HK$6,465 HKD
£649 GBP
As of November 2, 2026
Save HK$18,755 HKD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$38,054 HKD at Brilliant Earth · As of October 26, 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 LG776656912 or 776656912. Listed at 15 retailers as of November 2, 2026, with a 290% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776656912
Dimensions8.73 × 8.42 × 5.49 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.73 mm8.42 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776656912
Side View
Table 61.0%Crown 34.7°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 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$38,054 HKD|Low: HK$6,465 HKD|High: HK$40,250 HKD|Avg: HK$16,303 HKD|-5.5%
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 3, 2026
Retailer 9HK$6,465 HKD
Retailer 5HK$8,913 HKD
Retailer 15HK$8,921 HKD
Retailer 13HK$8,945 HKD
Retailer 2HK$9,086 HKD
Retailer 11HK$9,664 HKD
Retailer 7HK$9,972 HKD
Retailer 12HK$12,271 HKD
Retailer 8HK$12,610 HKD
Retailer 4HK$16,860 HKD
Retailer 14HK$18,532 HKD
Retailer 3HK$18,661 HKD
Retailer 6HK$22,455 HKD
Retailer 10HK$25,220 HKD
Brilliant EarthHK$38,054 HKD

42 data points across 15 retailers

15 retailersHK$6,465 HKD to HK$25,220 HKD

A
Cheapest Retailer
-
HK$6,465 HKD
£649 GBP
A
Retailer 2
-
HK$8,913 HKD
$1,136 USD
View
A
Retailer 3
-
HK$8,921 HKD
$1,137 USD
View
A
Retailer 4
-
HK$8,945 HKD
$1,140 USD
View
A
Retailer 5
-
HK$9,086 HKD
£912 GBP
View
A
Retailer 6
-
HK$9,664 HKD
€1,173 EUR
View
A
Retailer 7
-
HK$12,271 HKD
A$2,406 AUD
View
A
Retailer 8
-
HK$12,610 HKD
ZAR 25,965 ZAR
View
B+
Retailer 9
-
HK$16,320 HKD
$2,080 USD
View
Retailer 10
-
HK$16,860 HKD
£1,692 GBP
View
Price last confirmed 19 days ago
B+
Retailer 11
-
HK$18,532 HKD
$2,362 USD
View
B+
Retailer 12
-
HK$18,661 HKD
SGD 3,214 SGD
View
B
Retailer 13
-
HK$22,455 HKD
$2,862 USD
View
B
Retailer 14
-
HK$25,220 HKD
£2,531 GBP
View
Most Expensive
Brilliant Earth
18233605A · Oct 26
HK$38,054 HKD
$4,850 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from HK$6,465 HKDSave up to HK$18,755 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$6,465 HKD