CaratHunter
Plans
Round|Natural|IGI

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 623473316

Shape and cutting style on the report: Round brilliant

Certificate IGI 623473316

Diamond specifications and retailer prices

From €1,881 EUR
As of November 6, 2026
Save €2,473 EUR (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €4,354 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623473316. Listed at 15 retailers as of November 5, 2026, with prices from €1,881 to €4,354, a €2,473 spread on the same certified stone. NZ Jewellers lists it at €4,354. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 623473316
Dimensions7.48 × 7.44 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.48 mm7.44 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623473316
Side View
Table 58.0%Crown 33.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €4,354 EUR|Low: €1,881 EUR|High: €4,530 EUR|Avg: €2,476 EUR|-3.9%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 7€1,881 EUR
Retailer 10€1,902 EUR
Retailer 3€1,981 EUR
Retailer 6€2,080 EUR
Retailer 4€2,082 EUR
Retailer 5€2,082 EUR
Retailer 13€2,178 EUR
Retailer 11€2,207 EUR
Retailer 2€2,267 EUR
Retailer 8€2,289 EUR
Retailer 14€2,403 EUR
Retailer 9€2,542 EUR
Retailer 12€2,591 EUR
Retailer 15€3,647 EUR
NZ Jewellers€4,354 EUR

22 data points across 15 retailers

15 retailers€1,881 EUR to €4,354 EUR

A
Cheapest Retailer
-
€1,881 EUR
A
Retailer 2
-
€1,902 EUR
View
A
Retailer 3
-
€1,981 EUR
View
A
Retailer 4
-
€2,080 EUR
View
Retailer 5
-
€2,082 EUR
View
Price last confirmed 8 days ago
A
Retailer 6
-
€2,082 EUR
View
A
Retailer 7
-
€2,178 EUR
View
A
Retailer 8
-
€2,207 EUR
View
A
Retailer 9
-
€2,267 EUR
View
A
Retailer 10
-
€2,289 EUR
View
A
Retailer 11
-
€2,403 EUR
View
A
Retailer 12
-
€2,542 EUR
View
A
Retailer 13
-
€2,591 EUR
View
B+
Retailer 14
-
€3,647 EUR
View
Most Expensive
B
NZ Jewellers
64f18f7e-053e-4677-856d-c596d1f2dd3e · Nov 5
€4,354 EUR
$4,887 USD
View
14 more retailers have this diamond
Prices start from €1,881 EURSave up to €2,473 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.

A
1.51ct Round
€1,881 EUR