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Round|Natural|GIA

3.18ct M I1 Round Natural Diamond

EX • M/I1 • GIA 5231021840

Certificate GIA 5231021840

Diamond specifications and retailer prices

From $31,709 NZD
As of November 1, 2026
Save $19,847 NZD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $51,556 NZD 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 $31,709 to $51,556, a $19,847 spread on the same certified stone. NZ Jewellers lists it at $51,556. 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: $51,556 NZD|Low: $31,709 NZD|High: $51,556 NZD|Avg: $39,416 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 3$31,709 NZD
Retailer 9$32,975 NZD
Retailer 4$33,456 NZD
Retailer 6$36,393 NZD
Retailer 5$38,213 NZD
Retailer 8$39,426 NZD
Retailer 7$40,941 NZD
Retailer 2$42,284 NZD
Retailer 10$45,776 NZD
NZ Jewellers$51,556 NZD

23 data points across 10 retailers

9 retailers$31,709 NZD to $51,556 NZD

B
Cheapest Retailer
-
$31,709 NZD
B
Retailer 2
-
$33,456 NZD
View
Retailer 3
-
$36,393 NZD
View
Price last confirmed 8 days ago
C
Retailer 4
-
$38,213 NZD
View
C
Retailer 5
-
$39,426 NZD
View
C
Retailer 6
-
$40,941 NZD
View
C
Retailer 7
-
$42,284 NZD
View
C
Retailer 8
-
$42,407 NZD
View
Most Expensive
C
NZ Jewellers
aa35406b-0523-45f1-9395-f1aad5eda815 · Nov 5
$51,556 NZD
$28,982 USD
View
8 more retailers have this diamond
Prices start from $31,709 NZDSave up to $19,847 NZD

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
$31,709 NZD