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Round|Natural|GIA

3.18ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6551717443

Certificate GIA 6551717443

Diamond specifications and retailer prices

From HK$315,809 HKD
As of November 4, 2026
Save HK$226,968 HKD (42%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$542,776 HKD at MOH London · As of November 4, 2026
View at MOH London

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 6551717443. Listed at 24 retailers as of November 4, 2026, with prices from HK$315,809 to HK$542,776, a HK$226,968 spread on the same certified stone. MOH London lists it at HK$542,776. 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
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551717443
Dimensions9.35 × 9.29 × 5.77 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
9.35 mm9.29 mm3.18 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551717443
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
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: Nov 4
Current: HK$542,776 HKD|Low: HK$311,502 HKD|High: HK$736,196 HKD|Avg: HK$436,815 HKD|-26.3%
MOH London
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 20HK$311,502 HKD
Retailer 3HK$315,809 HKD
Retailer 6HK$319,433 HKD
Retailer 4HK$337,736 HKD
Retailer 16HK$345,157 HKD
Retailer 10HK$348,476 HKD
Retailer 7HK$348,727 HKD
Retailer 9HK$362,448 HKD
Retailer 18HK$362,448 HKD
Retailer 5HK$362,997 HKD
Retailer 11HK$362,997 HKD
Retailer 15HK$372,702 HKD
Retailer 8HK$372,890 HKD
Retailer 22HK$374,530 HKD
Retailer 21HK$377,511 HKD
Retailer 19HK$392,032 HKD
Retailer 17HK$421,389 HKD
Retailer 12HK$443,858 HKD
Retailer 13HK$448,628 HKD
Retailer 2HK$470,281 HKD
Retailer 14HK$478,024 HKD
MOH LondonHK$542,776 HKD

25 data points across 22 retailers

24 retailersHK$315,809 HKD to HK$542,776 HKD

Retailer 1
-
HK$311,502 HKD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$315,809 HKD
View
A
Retailer 3
-
HK$319,433 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$337,736 HKD
View
A
Retailer 5
-
HK$345,157 HKD
View
Retailer 6
-
HK$348,476 HKD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
HK$348,727 HKD
View
B+
Retailer 8
-
HK$362,448 HKD
View
B+
Retailer 9
-
HK$362,448 HKD
View
B+
Retailer 10
-
HK$362,997 HKD
View
B+
Retailer 11
-
HK$362,997 HKD
View
B+
Retailer 12
-
HK$372,702 HKD
View
B+
Retailer 13
-
HK$372,890 HKD
View
B+
Retailer 14
-
HK$374,530 HKD
View
B+
Retailer 15
-
HK$377,511 HKD
View
B+
Retailer 16
-
HK$392,032 HKD
View
B+
Retailer 17
-
HK$421,389 HKD
View
Retailer 18
-
HK$443,858 HKD
View
Price last confirmed 37 days ago
B
Retailer 19
-
HK$448,628 HKD
View
B+
Retailer 20
-
HK$470,281 HKD
View
Retailer 21
-
HK$491,023 HKD
View
Price last confirmed 48 days ago
Retailer 22
-
HK$510,668 HKD
View
Price last confirmed 45 days ago
Retailer 23
-
HK$530,304 HKD
View
Price last confirmed 45 days ago
Most Expensive
B
MOH London
0BC3ED65C · Nov 4
HK$542,776 HKD
£54,477 GBP
View
23 more retailers have this diamond
Prices start from HK$315,809 HKDSave up to HK$226,968 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.

A
3.18ct Round
HK$315,809 HKD