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3.18ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6425577637

Certificate GIA 6425577637

Diamond specifications and retailer prices

From HK$394,064 HKD
As of November 1, 2026
Save HK$321,751 HKD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$715,815 HKD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 3.18ct natural round diamond

This 3.18ct natural 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 6425577637. Listed at 15 retailers as of November 1, 2026, with prices from HK$394,064 to HK$715,815, a HK$321,751 spread on the same certified stone. Diamond Quarter lists it at HK$715,815. 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

3.18
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6425577637
Dimensions9.68 × 9.62 × 5.63 mm
L/W Ratio1.01
Top View
9.68 mm9.62 mm3.18 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6425577637
Side View
Table 62.0%Crown 33°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 58.5%

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: Nov 1
Current: HK$414,462 HKD|Low: HK$394,064 HKD|High: HK$541,570 HKD|Avg: HK$458,882 HKD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4HK$394,064 HKD
Retailer 1HK$414,462 HKD
Retailer 2HK$447,427 HKD
Retailer 3HK$524,334 HKD
Retailer 5HK$541,570 HKD

46 data points across 5 retailers

15 retailersHK$394,064 HKD to HK$715,815 HKD

B+
Cheapest Retailer
-
HK$394,064 HKD
B+
Retailer 2
-
HK$414,462 HKD
View
B+
Retailer 3
-
HK$418,479 HKD
View
B+
Retailer 4
-
HK$429,493 HKD
View
B+
Retailer 5
-
HK$434,946 HKD
View
B+
Retailer 6
-
HK$441,426 HKD
View
B+
Retailer 7
-
HK$447,427 HKD
View
B+
Retailer 8
-
HK$468,170 HKD
View
B+
Retailer 9
-
HK$480,754 HKD
View
B+
Retailer 10
-
HK$480,754 HKD
View
B+
Retailer 11
-
HK$493,039 HKD
View
B+
Retailer 12
-
HK$496,758 HKD
View
B
Retailer 13
-
HK$524,334 HKD
View
B
Retailer 14
-
HK$544,057 HKD
View
Most Expensive
B
Diamond Quarter
3.18SI1D64377A02N · Nov 5
HK$715,815 HKD
£71,844 GBP
View
14 more retailers have this diamond
Prices start from HK$394,064 HKDSave up to HK$321,751 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+
3.18ct Round
HK$394,064 HKD