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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 7491376602

Certificate GIA 7491376602

Diamond specifications and retailer prices

From €4,124 EUR
As of November 4, 2026
Save €4,607 EUR (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €8,731 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7491376602. Listed at 13 retailers as of November 4, 2026, with prices from €4,124 to €8,731, a €4,607 spread on the same certified stone. NZ Jewellers lists it at €8,731. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7491376602
Dimensions7.45 × 7.43 × 4.50 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds, additional twinning wisps, pinpoints and surface graining are not shown.
Top View
7.45 mm7.43 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7491376602
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.4%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: €8,731 EUR|Low: €4,170 EUR|High: €8,731 EUR|Avg: €5,734 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5€4,170 EUR
Retailer 6€4,729 EUR
Retailer 7€4,729 EUR
Retailer 9€4,729 EUR
Retailer 3€5,009 EUR
Retailer 8€5,457 EUR
Retailer 2€5,666 EUR
Retailer 4€7,670 EUR
NZ Jewellers€8,731 EUR

41 data points across 9 retailers

13 retailers€4,124 EUR to €8,731 EUR

B+
Cheapest Retailer
-
€4,124 EUR
B+
Retailer 2
-
€4,170 EUR
View
B+
Retailer 3
-
€4,402 EUR
View
B
Retailer 4
-
€4,678 EUR
View
B
Retailer 5
-
€4,729 EUR
View
Retailer 6
-
€4,729 EUR
View
Price last confirmed 8 days ago
B
Retailer 7
-
€4,729 EUR
View
B+
Retailer 8
-
€5,009 EUR
View
B
Retailer 9
-
€5,457 EUR
View
B
Retailer 10
-
€5,666 EUR
View
Retailer 11
-
€5,758 EUR
View
Price last confirmed 14 days ago
B
Retailer 12
-
€7,670 EUR
View
Most Expensive
C
NZ Jewellers
2c03ce52-d5a5-4a88-aa87-0d9ab6985084 · Nov 5
€8,731 EUR
$9,800 USD
View
12 more retailers have this diamond
Prices start from €4,124 EURSave up to €4,607 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
€4,124 EUR