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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 €1,379 EUR
$1,541 USD
As of October 30, 2026
Save €5,343 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €6,722 EUR 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 €1,379 to €6,722, a €5,343 spread on the same certified stone. Brilliant Earth lists it at €6,722. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €6,722 EUR|Low: €1,379 EUR|High: €10,302 EUR|Avg: €4,648 EUR|-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 3€1,379 EUR
Retailer 7€1,423 EUR
Retailer 9€2,281 EUR
Retailer 6€2,659 EUR
Retailer 2€2,835 EUR
Retailer 8€4,088 EUR
Retailer 4€4,229 EUR
Retailer 10€5,536 EUR
Retailer 5€5,999 EUR
Brilliant Earth€6,722 EUR

33 data points across 10 retailers

10 retailers€1,379 EUR to €6,722 EUR

A
Cheapest Retailer
-
€1,379 EUR
$1,541 USD
A
Retailer 2
-
€1,423 EUR
$1,590 USD
View
A
Retailer 3
-
€2,281 EUR
$2,548 USD
View
A
Retailer 4
-
€2,659 EUR
View
A
Retailer 5
-
€2,835 EUR
$3,167 USD
View
B+
Retailer 6
-
€4,088 EUR
£3,596 GBP
View
B+
Retailer 7
-
€4,229 EUR
$4,725 USD
View
Retailer 8
-
€5,536 EUR
$6,185 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
€5,999 EUR
$6,702 USD
View
Most Expensive
B
Brilliant Earth
21286525A · Oct 30
€6,722 EUR
$7,510 USD
View
9 more retailers have this diamond
Prices start from €1,379 EURSave up to €5,343 EUR

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
€1,379 EUR