CaratHunter
Plans
Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5242042566

Certificate GIA 5242042566

Diamond specifications and retailer prices

From €3,013 EUR
HK$26,300 HKD
As of November 1, 2026
Save €4,145 EUR (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €7,158 EUR at NZ Jewellers · As of October 30, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242042566. Listed at 9 retailers as of October 30, 2026, with prices from €3,013 to €7,158, a €4,145 spread on the same certified stone. NZ Jewellers lists it at €7,158. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5242042566
Dimensions7.24 × 7.28 × 4.56 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.24 mm7.28 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242042566
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.8%

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 1
Current: €7,158 EUR|Low: €2,990 EUR|High: €7,655 EUR|Avg: €4,965 EUR|-6.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5€3,013 EUR
Retailer 9€3,834 EUR
Retailer 6€4,108 EUR
Retailer 7€4,108 EUR
Retailer 8€4,373 EUR
Retailer 4€4,623 EUR
Retailer 2€4,908 EUR
Retailer 3€6,544 EUR
NZ Jewellers€7,158 EUR

39 data points across 9 retailers

9 retailers€3,013 EUR to €7,158 EUR

A
Cheapest Retailer
-
€3,013 EUR
HK$26,300 HKD
B+
Retailer 2
-
€3,834 EUR
SGD 5,788 SGD
View
B+
Retailer 3
-
€4,108 EUR
$4,590 USD
View
B+
Retailer 4
-
€4,108 EUR
$4,590 USD
View
B+
Retailer 5
-
€4,373 EUR
$4,886 USD
View
B+
Retailer 6
-
€4,623 EUR
View
B
Retailer 7
-
€4,908 EUR
£4,317 GBP
View
B
Retailer 8
-
€6,544 EUR
£5,757 GBP
View
Most Expensive
B
NZ Jewellers
94b0a966-6652-4bf5-97c4-71571a5704a1 · Oct 30
€7,158 EUR
$7,997 USD
View
8 more retailers have this diamond
Prices start from €3,013 EURSave up to €4,145 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
€3,013 EUR