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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 HK$10,654 HKD
As of November 5, 2026
Save HK$15,078 HKD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$25,732 HKD 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 HK$10,654 to HK$25,732, a HK$15,078 spread on the same certified stone. Blue Nile lists it at HK$25,732. 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: HK$25,732 HKD|Low: HK$9,297 HKD|High: HK$53,653 HKD|Avg: HK$21,931 HKD
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 6HK$10,638 HKD
Retailer 10HK$10,654 HKD
Retailer 12HK$10,779 HKD
Retailer 2HK$11,595 HKD
Retailer 9HK$12,356 HKD
Retailer 15HK$12,466 HKD
Retailer 14HK$12,592 HKD
Retailer 13HK$13,345 HKD
Retailer 16HK$20,845 HKD
Retailer 11HK$23,167 HKD
Blue NileHK$25,732 HKD
Retailer 5HK$30,306 HKD
Retailer 3HK$34,754 HKD
Retailer 8HK$34,754 HKD
Retailer 7HK$35,068 HKD
Retailer 4HK$53,653 HKD

10 data points across 16 retailers

5 retailersHK$10,654 HKD to HK$25,732 HKD

B+
Cheapest Retailer
-
HK$10,654 HKD
B+
Retailer 2
-
HK$11,595 HKD
View
B+
Retailer 3
-
HK$12,356 HKD
View
B
Retailer 4
-
HK$23,167 HKD
View
Most Expensive
B
Blue Nile
24787994 · Oct 31
HK$25,732 HKD
$3,280 USD
View
4 more retailers have this diamond
Prices start from HK$10,654 HKDSave up to HK$15,078 HKD

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
HK$10,654 HKD