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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5242042566

Certificate GIA 5242042566

Diamond specifications and retailer prices

From $5,973 NZD
HK$26,300 HKD
As of November 1, 2026
Save $8,216 NZD (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $14,189 NZD 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 $5,973 to $14,189, a $8,216 spread on the same certified stone. NZ Jewellers lists it at $14,189. 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
Colour
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: $14,189 NZD|Low: $5,928 NZD|High: $15,174 NZD|Avg: $9,828 NZD|-6.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 5$5,973 NZD
Retailer 9$7,600 NZD
Retailer 6$8,144 NZD
Retailer 7$8,144 NZD
Retailer 8$8,669 NZD
Retailer 4$9,164 NZD
Retailer 2$9,728 NZD
Retailer 3$12,973 NZD
NZ Jewellers$14,189 NZD

40 data points across 9 retailers

9 retailers$5,973 NZD to $14,189 NZD

A
Cheapest Retailer
-
$5,973 NZD
HK$26,300 HKD
B+
Retailer 2
-
$7,600 NZD
SGD 5,788 SGD
View
B+
Retailer 3
-
$8,144 NZD
$4,590 USD
View
B+
Retailer 4
-
$8,144 NZD
$4,590 USD
View
B+
Retailer 5
-
$8,669 NZD
$4,886 USD
View
B+
Retailer 6
-
$9,164 NZD
€4,919 EUR
View
B
Retailer 7
-
$9,728 NZD
£4,317 GBP
View
B
Retailer 8
-
$12,973 NZD
£5,757 GBP
View
Most Expensive
B
NZ Jewellers
94b0a966-6652-4bf5-97c4-71571a5704a1 · Oct 30
$14,189 NZD
$7,997 USD
View
8 more retailers have this diamond
Prices start from $5,973 NZDSave up to $8,216 NZD

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
$5,973 NZD