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Radiant|Lab Grown|IGI

2.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG844644966

Shape and cutting style on the report: Cut cornered square modified brilliant

Certificate IGI LG844644966

Diamond specifications and retailer prices

From $4,265 CAD
$3,053 USD
As of October 31, 2026
Save $5,555 CAD (57%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $9,820 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.78ct lab-grown radiant diamond

This 2.78ct lab-grown radiant sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844644966 or 844644966. Listed at 5 retailers as of October 30, 2026, with prices from $4,265 to $9,820, a $5,555 spread on the same certified stone. Brilliant Earth lists it at $9,820. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844644966
Dimensions8.01 × 7.77 × 5.19 mm
L/W Ratio1.03
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
8.01 mm7.77 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844644966
Side View
Table 68.0%Crown 41°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $9,820 CAD|Low: $2,552 CAD|High: $11,650 CAD|Avg: $5,700 CAD|-15.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 5$3,108 CAD
Retailer 3$4,265 CAD
Retailer 4$4,892 CAD
Retailer 2$5,980 CAD
Brilliant Earth$9,820 CAD

7 data points across 5 retailers

5 retailers$4,265 CAD to $9,820 CAD

Retailer 1
-
$3,108 CAD
€2,119 EUR
Price last confirmed 8 days ago
B+
Retailer 2
-
$4,265 CAD
$3,053 USD
View
B+
Retailer 3
-
$4,892 CAD
$3,502 USD
View
B+
Retailer 4
-
$5,980 CAD
$4,281 USD
View
Most Expensive
B
Brilliant Earth
22254885A · Oct 30
$9,820 CAD
$7,030 USD
View
4 more retailers have this diamond
Prices start from $4,265 CADSave up to $5,555 CAD

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.

B+
2.78ct Radiant
$4,265 CAD