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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 1515161633

Certificate GIA 1515161633

Diamond specifications and retailer prices

From €2,691 EUR
As of November 6, 2026
Save €3,617 EUR (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €6,308 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 K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 1515161633. Listed at 8 retailers as of November 5, 2026, with prices from €2,691 to €6,308, a €3,617 spread on the same certified stone. NZ Jewellers lists it at €6,308. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1515161633
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
7.27 mm7.31 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515161633
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.6%

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 6
Current: €6,308 EUR|Low: €1,858 EUR|High: €6,308 EUR|Avg: €3,585 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 5€1,858 EUR
Retailer 4€1,971 EUR
Retailer 6€2,691 EUR
Retailer 7€2,912 EUR
Retailer 9€3,280 EUR
Retailer 11€3,280 EUR
Retailer 8€3,406 EUR
Retailer 3€3,463 EUR
Retailer 10€3,785 EUR
Retailer 2€4,065 EUR
Retailer 12€4,308 EUR
Retailer 13€5,127 EUR
NZ Jewellers€6,308 EUR

20 data points across 13 retailers

8 retailers€2,691 EUR to €6,308 EUR

B+
Cheapest Retailer
-
€2,691 EUR
B+
Retailer 2
-
€2,912 EUR
View
B+
Retailer 3
-
€3,280 EUR
View
Retailer 4
-
€3,280 EUR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€3,406 EUR
View
B
Retailer 6
-
€3,785 EUR
View
B
Retailer 7
-
€4,065 EUR
View
Most Expensive
C
NZ Jewellers
31a47f8d-1050-4502-8e5a-31aca8388e9a · Nov 5
€6,308 EUR
$7,080 USD
View
7 more retailers have this diamond
Prices start from €2,691 EURSave up to €3,617 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
€2,691 EUR