CaratHunter
Plans
Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 6512748750

Certificate GIA 6512748750

Diamond specifications and retailer prices

From €3,749 EUR
As of November 2, 2026
Save €2,948 EUR (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €6,697 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 I 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 6512748750. Listed at 6 retailers as of November 2, 2026, with prices from €3,749 to €6,697, a €2,948 spread on the same certified stone. NZ Jewellers lists it at €6,697. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.29°
Pavilion angle30.13°
OriginNatural
Grading LabGIA
CertificateGIA 6512748750
Dimensions7.85 × 5.68 × 3.74 mm
L/W Ratio1.38
Top View
7.85 mm5.68 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512748750
Side View
Table 66.0%Crown 43.29°Girdle: Slightly ThickPavilion 30.13°Culet: NoneDepth 65.8%

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 2
Current: €6,697 EUR|Low: €3,748 EUR|High: €6,790 EUR|Avg: €4,614 EUR|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3€3,749 EUR
Retailer 2€3,844 EUR
Retailer 5€3,844 EUR
Retailer 6€3,970 EUR
Retailer 9€4,104 EUR
Retailer 7€4,264 EUR
Retailer 8€4,356 EUR
Retailer 4€6,123 EUR
NZ Jewellers€6,697 EUR

29 data points across 9 retailers

6 retailers€3,749 EUR to €6,697 EUR

A
Cheapest Retailer
-
€3,749 EUR
A
Retailer 2
-
€3,844 EUR
View
A
Retailer 3
-
€3,844 EUR
View
A
Retailer 4
-
€3,970 EUR
View
B+
Retailer 5
-
€6,123 EUR
View
Most Expensive
B
NZ Jewellers
d94f7b69-be2e-462a-b5bf-7ce1ebfe390a · Nov 3
€6,697 EUR
$7,477 USD
View
5 more retailers have this diamond
Prices start from €3,749 EURSave up to €2,948 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
€3,749 EUR