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Round|Lab Grown|GIA

3.09ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 2487357247

Certificate GIA 2487357247

Diamond specifications and retailer prices

From $1,940 AUD
As of November 5, 2026
Save $2,746 AUD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,685 AUD 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 $1,940 to $4,685, a $2,746 spread on the same certified stone. Blue Nile lists it at $4,685. 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
Colour
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: $4,685 AUD|Low: $1,693 AUD|High: $9,770 AUD|Avg: $3,993 AUD
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$1,937 AUD
Retailer 10$1,940 AUD
Retailer 12$1,963 AUD
Retailer 2$2,111 AUD
Retailer 9$2,250 AUD
Retailer 15$2,270 AUD
Retailer 14$2,293 AUD
Retailer 13$2,430 AUD
Retailer 16$3,796 AUD
Retailer 11$4,218 AUD
Blue Nile$4,685 AUD
Retailer 5$5,518 AUD
Retailer 3$6,328 AUD
Retailer 8$6,328 AUD
Retailer 7$6,385 AUD
Retailer 4$9,770 AUD

10 data points across 16 retailers

5 retailers$1,940 AUD to $4,685 AUD

B+
Cheapest Retailer
-
$1,940 AUD
B+
Retailer 2
-
$2,111 AUD
View
B+
Retailer 3
-
$2,250 AUD
View
B
Retailer 4
-
$4,218 AUD
View
Most Expensive
B
Blue Nile
24787994 · Oct 31
$4,685 AUD
$3,280 USD
View
4 more retailers have this diamond
Prices start from $1,940 AUDSave up to $2,746 AUD

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
$1,940 AUD