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3.09ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 2487357247

Certificate GIA 2487357247

Diamond specifications and retailer prices

From $1,897 CAD
As of November 5, 2026
Save $2,684 CAD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,581 CAD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2487357247. Listed at 5 retailers as of October 31, 2026, with prices from $1,897 to $4,581, a $2,684 spread on the same certified stone. Blue Nile lists it at $4,581. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.09
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 2487357247
Dimensions9.41 × 9.39 × 5.72 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
9.41 mm9.39 mm3.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2487357247
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.8%

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: Nov 5
Current: $4,581 CAD|Low: $1,655 CAD|High: $9,551 CAD|Avg: $3,904 CAD
Blue Nile
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 29, 2026
Retailer 6$1,894 CAD
Retailer 10$1,897 CAD
Retailer 12$1,919 CAD
Retailer 2$2,064 CAD
Retailer 9$2,200 CAD
Retailer 15$2,219 CAD
Retailer 14$2,242 CAD
Retailer 13$2,376 CAD
Retailer 16$3,711 CAD
Retailer 11$4,124 CAD
Blue Nile$4,581 CAD
Retailer 5$5,395 CAD
Retailer 3$6,187 CAD
Retailer 8$6,187 CAD
Retailer 7$6,243 CAD
Retailer 4$9,551 CAD

10 data points across 16 retailers

5 retailers$1,897 CAD to $4,581 CAD

B+
Cheapest Retailer
-
$1,897 CAD
B+
Retailer 2
-
$2,064 CAD
View
B+
Retailer 3
-
$2,200 CAD
View
B
Retailer 4
-
$4,124 CAD
View
Most Expensive
B
Blue Nile
24787994 · Oct 31
$4,581 CAD
$3,280 USD
View
4 more retailers have this diamond
Prices start from $1,897 CADSave up to $2,684 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+
3.09ct Round
$1,897 CAD