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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 6551278496

Certificate GIA 6551278496

Diamond specifications and retailer prices

From €3,395 EUR
As of November 2, 2026
Save €2,711 EUR (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €6,107 EUR at NZ Jewellers · As of November 3, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551278496. Listed at 6 retailers as of November 2, 2026, with prices from €3,395 to €6,107, a €2,711 spread on the same certified stone. NZ Jewellers lists it at €6,107. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.5°
Pavilion angle35.96°
OriginNatural
Grading LabGIA
CertificateGIA 6551278496
Dimensions7.63 × 5.69 × 3.93 mm
L/W Ratio1.34
Girdle conditionThick
Key to symbols
Crystal, Feather, Cloud
Top View
7.63 mm5.69 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551278496
Side View
Table 69.0%Crown 50.5°Girdle: ThickPavilion 35.96°Culet: NoneDepth 69.0%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: €6,107 EUR|Low: €3,248 EUR|High: €6,169 EUR|Avg: €4,195 EUR|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7€3,248 EUR
Retailer 2€3,395 EUR
Retailer 4€3,506 EUR
Retailer 6€3,506 EUR
Retailer 5€3,635 EUR
Retailer 8€3,872 EUR
Retailer 3€5,893 EUR
NZ Jewellers€6,107 EUR

30 data points across 8 retailers

6 retailers€3,395 EUR to €6,107 EUR

A
Cheapest Retailer
-
€3,395 EUR
A
Retailer 2
-
€3,506 EUR
View
A
Retailer 3
-
€3,506 EUR
View
A
Retailer 4
-
€3,635 EUR
View
Retailer 5
-
€5,893 EUR
View
Price last confirmed 9 days ago
Most Expensive
B+
NZ Jewellers
cc57a906-508e-483f-9f0b-71230cce7ed2 · Nov 3
€6,107 EUR
$6,818 USD
View
5 more retailers have this diamond
Prices start from €3,395 EURSave up to €2,711 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
€3,395 EUR