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Cushion|Lab Grown|IGI

2.80ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG830628589

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830628589

Diamond specifications and retailer prices

From $2,208 AUD
$1,551 USD
As of October 30, 2026
Save $8,312 AUD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,520 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.8ct lab-grown cushion diamond

This 2.8ct 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 LG830628589 or 830628589. Listed at 10 retailers as of October 30, 2026, with prices from $2,208 to $10,520, a $8,312 spread on the same certified stone. Brilliant Earth lists it at $10,520. 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

2.80
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830628589
Dimensions9.62 × 7.60 × 4.95 mm
L/W Ratio1.27
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
9.62 mm7.60 mm2.80 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830628589
Side View
Table 59.0%Crown 34.2°Girdle: MED-THKPavilion 35.2°Culet: NoneDepth 65.1%

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: $10,520 AUD|Low: $2,208 AUD|High: $16,500 AUD|Avg: $7,382 AUD|-35.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3$2,208 AUD
Retailer 7$2,285 AUD
Retailer 8$3,653 AUD
Retailer 6$4,259 AUD
Retailer 2$4,567 AUD
Retailer 9$6,617 AUD
Retailer 4$6,775 AUD
Retailer 10$8,599 AUD
Retailer 5$9,609 AUD
Brilliant Earth$10,520 AUD

34 data points across 10 retailers

10 retailers$2,208 AUD to $10,520 AUD

A
Cheapest Retailer
-
$2,208 AUD
$1,551 USD
A
Retailer 2
-
$2,285 AUD
$1,605 USD
View
A
Retailer 3
-
$3,653 AUD
$2,566 USD
View
A
Retailer 4
-
$4,259 AUD
€2,849 EUR
View
A
Retailer 5
-
$4,567 AUD
$3,208 USD
View
B+
Retailer 6
-
$6,617 AUD
£3,660 GBP
View
B+
Retailer 7
-
$6,775 AUD
$4,759 USD
View
Retailer 8
-
$8,599 AUD
$6,040 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$9,609 AUD
$6,750 USD
View
Most Expensive
B
Brilliant Earth
21286275A · Oct 30
$10,520 AUD
$7,390 USD
View
9 more retailers have this diamond
Prices start from $2,208 AUDSave up to $8,312 AUD

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
2.80ct Cushion
$2,208 AUD