Round|Natural|GIA

3.18ct M I1 Round Natural Diamond

EX • M/I1 • GIA 5231021840

Certificate GIA 5231021840

Diamond specifications and retailer prices

From $17,825 USD
As of November 1, 2026
Save $11,157 USD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $28,982 USD 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 $17,825 to $28,982, a $11,157 spread on the same certified stone. NZ Jewellers lists it at $28,982. 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
Color
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

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $28,982 USD|Low: $17,825 USD|High: $28,982 USD|Avg: $22,158 USD
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$17,825 USD
Retailer 9$18,537 USD
Retailer 4$18,807 USD
Retailer 6$20,458 USD
Retailer 5$21,481 USD
Retailer 8$22,163 USD
Retailer 7$23,015 USD
Retailer 2$23,770 USD
Retailer 10$25,733 USD
NZ Jewellers$28,982 USD

23 data points across 10 retailers

9 retailers$17,825 USD to $28,982 USD

B
Cheapest Retailer
-
$17,825 USD
B
Retailer 2
-
$18,807 USD
View
Retailer 3
-
$20,458 USD
View
Price last confirmed 8 days ago
C
Retailer 4
-
$21,481 USD
View
C
Retailer 5
-
$22,163 USD
View
C
Retailer 6
-
$23,015 USD
View
C
Retailer 7
-
$23,770 USD
View
C
Retailer 8
-
$23,839 USD
View
Most Expensive
C
NZ Jewellers
aa35406b-0523-45f1-9395-f1aad5eda815 · Nov 5
$28,982 USD
View
8 more retailers have this diamond
Prices start from $17,825 USDSave up to $11,157 USD

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
$17,825 USD