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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6422890913

Certificate GIA 6422890913

Diamond specifications and retailer prices

From €3,178 EUR
As of November 5, 2026
Save €3,236 EUR (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €6,414 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6422890913. Listed at 11 retailers as of November 5, 2026, with prices from €3,178 to €6,414, a €3,236 spread on the same certified stone. NZ Jewellers lists it at €6,414. 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

1.51
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422890913
Dimensions7.36 × 7.40 × 4.56 mm
L/W Ratio1.01
Top View
7.36 mm7.40 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6422890913
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €6,414 EUR|Low: €3,178 EUR|High: €6,414 EUR|Avg: €4,113 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6€3,178 EUR
Retailer 10€3,261 EUR
Retailer 5€3,681 EUR
Retailer 7€3,681 EUR
Retailer 9€3,681 EUR
Retailer 3€3,812 EUR
Retailer 4€4,138 EUR
Retailer 8€4,248 EUR
Retailer 11€4,380 EUR
Retailer 2€4,743 EUR
NZ Jewellers€6,414 EUR

38 data points across 11 retailers

11 retailers€3,178 EUR to €6,414 EUR

B+
Cheapest Retailer
-
€3,178 EUR
B+
Retailer 2
-
€3,195 EUR
View
B
Retailer 3
-
€3,239 EUR
View
B
Retailer 4
-
€3,681 EUR
View
Retailer 5
-
€3,681 EUR
View
Price last confirmed 8 days ago
B
Retailer 6
-
€3,681 EUR
View
B
Retailer 7
-
€3,812 EUR
View
B
Retailer 8
-
€4,138 EUR
View
B
Retailer 9
-
€4,248 EUR
View
B
Retailer 10
-
€4,743 EUR
View
Most Expensive
C
NZ Jewellers
d38079af-364e-4d5f-9d9b-d33c6d7af822 · Nov 5
€6,414 EUR
$7,199 USD
View
10 more retailers have this diamond
Prices start from €3,178 EURSave up to €3,236 EUR

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+
1.51ct Round
€3,178 EUR