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1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6491766711

Shape and cutting style on the report: Round brilliant

Certificate GIA 6491766711

Diamond specifications and retailer prices

From €4,083 EUR
As of November 4, 2026
Save €4,561 EUR (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €8,644 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 6491766711. Listed at 15 retailers as of November 4, 2026, with prices from €4,083 to €8,644, a €4,561 spread on the same certified stone. NZ Jewellers lists it at €8,644. 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 angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6491766711
Dimensions7.34 × 7.31 × 4.56 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.34 mm7.31 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6491766711
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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: €5,617 EUR|Low: €4,083 EUR|High: €7,706 EUR|Avg: €5,250 EUR|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 9€4,083 EUR
Retailer 5€4,133 EUR
Retailer 7€4,134 EUR
Retailer 8€4,359 EUR
Retailer 2€4,683 EUR
Retailer 3€4,959 EUR
Retailer 1€5,617 EUR
Retailer 6€5,628 EUR
Retailer 10€6,942 EUR
Retailer 4€7,594 EUR

43 data points across 10 retailers

15 retailers€4,083 EUR to €8,644 EUR

B+
Cheapest Retailer
-
€4,083 EUR
B+
Retailer 2
-
€4,133 EUR
View
B+
Retailer 3
-
€4,134 EUR
View
B+
Retailer 4
-
€4,359 EUR
View
B
Retailer 5
-
€4,633 EUR
View
Retailer 6
-
€4,683 EUR
View
Price last confirmed 8 days ago
B
Retailer 7
-
€4,683 EUR
View
B
Retailer 8
-
€4,683 EUR
View
B+
Retailer 9
-
€4,959 EUR
View
B
Retailer 10
-
€5,403 EUR
View
B
Retailer 11
-
€5,617 EUR
View
B
Retailer 12
-
€5,628 EUR
View
Retailer 13
-
€5,701 EUR
View
Price last confirmed 14 days ago
B
Retailer 14
-
€7,594 EUR
View
Most Expensive
B
NZ Jewellers
2ebd30b8-ea8c-4b5d-85d4-042f8b38b488 · Nov 5
€8,644 EUR
$9,702 USD
View
14 more retailers have this diamond
Prices start from €4,083 EURSave up to €4,561 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
€4,083 EUR