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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 1559156534

Certificate GIA 1559156534

Diamond specifications and retailer prices

From €4,977 EUR
$5,560 USD
As of October 29, 2026
Save €3,949 EUR (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €8,926 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559156534. Listed at 9 retailers as of October 29, 2026, with prices from €4,977 to €8,926, a €3,949 spread on the same certified stone. NZ Jewellers lists it at €8,926. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle54.56°
Pavilion angle35.61°
OriginNatural
Grading LabGIA
CertificateGIA 1559156534
Dimensions7.23 × 5.70 × 4.02 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle, Indented Natural
Top View
7.23 mm5.70 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559156534
Side View
Table 74.0%Crown 54.56°Girdle: MED-VTKPavilion 35.61°Culet: NoneDepth 70.5%

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: Oct 29
Current: €8,926 EUR|Low: €4,790 EUR|High: €9,019 EUR|Avg: €5,917 EUR|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11€4,790 EUR
Retailer 8€4,977 EUR
Retailer 2€5,008 EUR
Retailer 10€5,156 EUR
Retailer 5€5,337 EUR
Retailer 6€5,337 EUR
Retailer 7€5,345 EUR
Retailer 9€5,431 EUR
Retailer 3€5,679 EUR
Retailer 4€7,905 EUR
NZ Jewellers€8,926 EUR

37 data points across 11 retailers

9 retailers€4,977 EUR to €8,926 EUR

A
Cheapest Retailer
-
€4,977 EUR
$5,560 USD
A
Retailer 2
-
€5,008 EUR
£4,406 GBP
View
Retailer 3
-
€5,156 EUR
$5,760 USD
View
Price last confirmed 31 days ago
A
Retailer 4
-
€5,337 EUR
$5,962 USD
View
A
Retailer 5
-
€5,337 EUR
$5,962 USD
View
Retailer 6
-
€5,345 EUR
A$9,188 AUD
View
Price last confirmed 21 days ago
A
Retailer 7
-
€5,431 EUR
$6,067 USD
View
B+
Retailer 8
-
€7,905 EUR
£6,954 GBP
View
Most Expensive
B
NZ Jewellers
4ae519c7-44c9-4346-8684-d693f49de9c5 · Oct 30
€8,926 EUR
$9,972 USD
View
8 more retailers have this diamond
Prices start from €4,977 EURSave up to €3,949 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 Radiant
€4,977 EUR