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Round|Lab Grown|IGI

4.28ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG744513762

Shape and cutting style on the report: Round brilliant

Certificate IGI LG744513762

Diamond specifications and retailer prices

From $2,697 CAD
£1,520 GBP
As of October 30, 2026
Save $16,091 CAD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,788 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.28ct lab-grown round diamond

This 4.28ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744513762 or 744513762. Listed at 18 retailers as of October 30, 2026, with prices from $2,697 to $18,788, a $16,091 spread on the same certified stone. Brilliant Earth lists it at $18,788. 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

4.28
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513762
Dimensions10.35 × 10.42 × 6.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.35 mm10.42 mm4.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513762
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A+
Exceptional
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: $18,788 CAD|Low: $2,665 CAD|High: $33,554 CAD|Avg: $7,939 CAD|-44.0%
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
Retailer 17
October 30, 2026
Retailer 2$2,697 CAD
Retailer 13$2,716 CAD
Retailer 4$2,954 CAD
Retailer 14$3,286 CAD
Retailer 7$4,086 CAD
Retailer 3$4,779 CAD
Retailer 12$4,932 CAD
Retailer 16$5,171 CAD
Retailer 9$5,312 CAD
Retailer 10$5,615 CAD
Retailer 5$7,251 CAD
Retailer 6$7,628 CAD
Retailer 11$8,577 CAD
Retailer 17$9,445 CAD
Retailer 8$15,391 CAD
Retailer 15$18,677 CAD
Brilliant Earth$18,788 CAD

37 data points across 17 retailers

18 retailers$2,697 CAD to $18,788 CAD

A+
Cheapest Retailer
-
$2,697 CAD
£1,520 GBP
A
Retailer 2
-
$2,716 CAD
$1,944 USD
View
A
Retailer 3
-
$2,954 CAD
$2,115 USD
View
A
Retailer 4
-
$3,286 CAD
$2,352 USD
View
A
Retailer 5
-
$3,414 CAD
$2,444 USD
View
Final sale: no returns
A
Retailer 6
-
$4,086 CAD
$2,925 USD
View
A
Retailer 7
-
$4,779 CAD
$3,421 USD
View
A
Retailer 8
-
$4,932 CAD
$3,531 USD
View
A
Retailer 9
-
$5,171 CAD
$3,702 USD
View
A
Retailer 10
-
$5,312 CAD
$3,803 USD
View
A
Retailer 11
-
$5,615 CAD
€3,828 EUR
View
A
Retailer 12
-
$7,251 CAD
$5,191 USD
View
Retailer 13
-
$7,628 CAD
A$8,401 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$8,577 CAD
$6,140 USD
View
B+
Retailer 15
-
$9,445 CAD
£5,324 GBP
View
Retailer 16
-
$15,391 CAD
A$16,951 AUD
View
Price last confirmed 22 days ago
B
Retailer 17
-
$18,677 CAD
$13,370 USD
View
Most Expensive
B
Brilliant Earth
17187543Y · Oct 30
$18,788 CAD
$13,450 USD
View
17 more retailers have this diamond
Prices start from $2,697 CADSave up to $16,091 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.

A+
4.28ct Round
$2,697 CAD