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Cushion|Lab Grown|IGI

2.78ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816616094

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816616094

Diamond specifications and retailer prices

From $1,765 USD
As of October 29, 2026
Save $9,345 USD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,110 USD at Brilliant Earth · As of October 29, 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 LG816616094 or 816616094. Listed at 16 retailers as of October 29, 2026, with prices from $1,765 to $11,110, a $9,345 spread on the same certified stone. Brilliant Earth lists it at $11,110. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616094
Dimensions10.17 × 6.89 × 4.56 mm
L/W Ratio1.48
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
10.17 mm6.89 mm2.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616094
Side View
Table 64.0%Crown 34.8°Girdle: STK-THKPavilion 37.4°Culet: NoneDepth 66.2%

Caratlytics Score

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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 29
Current: $11,110 USD|Low: $1,582 USD|High: $11,510 USD|Avg: $4,386 USD|-3.5%
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
Retailer 16
October 30, 2026
Retailer 8$1,639 USD
Retailer 12$1,765 USD
Retailer 15$1,834 USD
Retailer 2$2,245 USD
Retailer 3$2,515 USD
Retailer 4$2,701 USD
Retailer 10$3,049 USD
Retailer 13$3,149 USD
Retailer 14$3,840 USD
Retailer 9$4,107 USD
Retailer 16$4,290 USD
Retailer 11$5,141 USD
Retailer 6$5,596 USD
Retailer 7$6,205 USD
Retailer 5$6,421 USD
Brilliant Earth$11,110 USD

31 data points across 16 retailers

16 retailers$1,765 USD to $11,110 USD

Retailer 1
-
$1,639 USD
Price last confirmed 17 days ago
A
Retailer 2
-
$1,765 USD
View
A
Retailer 3
-
$1,834 USD
View
Final sale: no returns
A
Retailer 4
-
$2,245 USD
£1,768 GBP
View
A
Retailer 5
-
$2,515 USD
View
A
Retailer 6
-
$2,701 USD
View
A
Retailer 7
-
$3,049 USD
€2,904 EUR
View
A
Retailer 8
-
$3,149 USD
View
A
Retailer 9
-
$3,840 USD
£3,024 GBP
View
B+
Retailer 10
-
$4,107 USD
ZAR 66,342 ZAR
View
B+
Retailer 11
-
$4,290 USD
View
B+
Retailer 12
-
$5,141 USD
£4,048 GBP
View
B+
Retailer 13
-
$5,596 USD
View
Retailer 14
-
$6,205 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$6,421 USD
SGD 8,677 SGD
View
Most Expensive
B
Brilliant Earth
21421918A · Oct 29
$11,110 USD
View
15 more retailers have this diamond
Prices start from $1,765 USDSave up to $9,345 USD

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
$1,765 USD