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Cushion|Lab Grown|IGI

2.78ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG830624697

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830624697

Diamond specifications and retailer prices

From HK$12,090 HKD
$1,541 USD
As of October 30, 2026
Save HK$46,831 HKD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$58,921 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.78ct lab-grown cushion diamond

This 2.78ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830624697 or 830624697. Listed at 10 retailers as of October 30, 2026, with prices from HK$12,090 to HK$58,921, a HK$46,831 spread on the same certified stone. Brilliant Earth lists it at HK$58,921. 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

2.78
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830624697
Dimensions9.44 × 7.30 × 5.03 mm
L/W Ratio1.29
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.44 mm7.30 mm2.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830624697
Side View
Table 60.0%Crown 33.9°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 68.9%

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: Oct 30
Current: HK$58,921 HKD|Low: HK$12,090 HKD|High: HK$90,304 HKD|Avg: HK$40,739 HKD|-33.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3HK$12,090 HKD
Retailer 7HK$12,475 HKD
Retailer 9HK$19,991 HKD
Retailer 6HK$23,305 HKD
Retailer 2HK$24,847 HKD
Retailer 8HK$35,831 HKD
Retailer 4HK$37,071 HKD
Retailer 10HK$48,526 HKD
Retailer 5HK$52,582 HKD
Brilliant EarthHK$58,921 HKD

33 data points across 10 retailers

10 retailersHK$12,090 HKD to HK$58,921 HKD

A
Cheapest Retailer
-
HK$12,090 HKD
$1,541 USD
A
Retailer 2
-
HK$12,475 HKD
$1,590 USD
View
A
Retailer 3
-
HK$19,991 HKD
$2,548 USD
View
A
Retailer 4
-
HK$23,305 HKD
€2,829 EUR
View
A
Retailer 5
-
HK$24,847 HKD
$3,167 USD
View
B+
Retailer 6
-
HK$35,831 HKD
£3,596 GBP
View
B+
Retailer 7
-
HK$37,071 HKD
$4,725 USD
View
Retailer 8
-
HK$48,526 HKD
$6,185 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
HK$52,582 HKD
$6,702 USD
View
Most Expensive
B
Brilliant Earth
21286525A · Oct 30
HK$58,921 HKD
$7,510 USD
View
9 more retailers have this diamond
Prices start from HK$12,090 HKDSave up to HK$46,831 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
2.78ct Cushion
HK$12,090 HKD