Radiant|Lab Grown|IGI

2.78ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743563466

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

Certificate IGI LG743563466

Diamond specifications and retailer prices

From $5,641 CAD
$4,038 USD
As of October 31, 2026
Save $4,948 CAD (47%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $10,589 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 LG743563466 or 743563466. Listed at 4 retailers as of October 30, 2026, with prices from $5,641 to $10,589, a $4,948 spread on the same certified stone. Brilliant Earth lists it at $10,589. 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 angle40.5°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743563466
Dimensions10.24 × 6.98 × 4.47 mm
L/W Ratio1.47
Culet sizePointed
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
10.24 mm6.98 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743563466
Side View
Table 65.0%Crown 40.5°Girdle: MediumPavilion 36.4°Culet: NoneDepth 64.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $10,589 CAD|Low: $3,562 CAD|High: $20,527 CAD|Avg: $10,353 CAD|-33.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4$3,562 CAD
Retailer 3$5,641 CAD
Retailer 2$7,292 CAD
Retailer 5$8,019 CAD
Retailer 7$10,301 CAD
Brilliant Earth$10,589 CAD
Retailer 6$20,527 CAD

15 data points across 7 retailers

4 retailers$5,641 CAD to $10,589 CAD

Retailer 1
-
$3,562 CAD
$2,550 USD
Price last confirmed 19 days ago
B+
Retailer 2
-
$5,641 CAD
$4,038 USD
View
Retailer 3
-
$7,292 CAD
$5,220 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21415797Y · Oct 30
$10,589 CAD
$7,580 USD
View
3 more retailers have this diamond
Prices start from $5,641 CADSave up to $4,948 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
$5,641 CAD