CaratHunter
Plans
Round|Natural|GIA

3.18ct M I1 Round Natural Diamond

EX • M/I1 • GIA 5231021840

Certificate GIA 5231021840

Diamond specifications and retailer prices

From HK$139,841 HKD
As of November 1, 2026
Save HK$87,529 HKD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$227,370 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 3.18ct natural round diamond

This 3.18ct natural round sits in the three to five carat band, graded M colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 5231021840. Listed at 9 retailers as of November 1, 2026, with prices from HK$139,841 to HK$227,370, a HK$87,529 spread on the same certified stone. NZ Jewellers lists it at HK$227,370. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

3.18
Carat
M
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5231021840
Dimensions9.57 × 9.54 × 5.76 mm
L/W Ratio1.00
Top View
9.57 mm9.54 mm3.18 ctM / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231021840
Side View
Table 56.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$227,370 HKD|Low: HK$139,841 HKD|High: HK$227,370 HKD|Avg: HK$173,831 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 3HK$139,841 HKD
Retailer 9HK$145,426 HKD
Retailer 4HK$147,545 HKD
Retailer 6HK$160,497 HKD
Retailer 5HK$168,523 HKD
Retailer 8HK$173,873 HKD
Retailer 7HK$180,557 HKD
Retailer 2HK$186,480 HKD
Retailer 10HK$201,881 HKD
NZ JewellersHK$227,370 HKD

23 data points across 10 retailers

9 retailersHK$139,841 HKD to HK$227,370 HKD

B
Cheapest Retailer
-
HK$139,841 HKD
B
Retailer 2
-
HK$147,545 HKD
View
Retailer 3
-
HK$160,497 HKD
View
Price last confirmed 8 days ago
C
Retailer 4
-
HK$168,523 HKD
View
C
Retailer 5
-
HK$173,873 HKD
View
C
Retailer 6
-
HK$180,557 HKD
View
C
Retailer 7
-
HK$186,480 HKD
View
C
Retailer 8
-
HK$187,022 HKD
View
Most Expensive
C
NZ Jewellers
aa35406b-0523-45f1-9395-f1aad5eda815 · Nov 5
HK$227,370 HKD
$28,982 USD
View
8 more retailers have this diamond
Prices start from HK$139,841 HKDSave up to HK$87,529 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$139,841 HKD