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1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1415840386

Certificate GIA 1415840386

Diamond specifications and retailer prices

From $9,741 NZD
$5,490 USD
As of November 1, 2026
Save $11,723 NZD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $21,464 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1415840386. Listed at 19 retailers as of October 30, 2026, with prices from $9,741 to $21,464, a $11,723 spread on the same certified stone. NZ Jewellers lists it at $21,464. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1415840386
Dimensions7.35 × 7.34 × 4.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.35 mm7.34 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1415840386
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $21,464 NZD|Low: $9,668 NZD|High: $22,298 NZD|Avg: $13,407 NZD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 12$9,741 NZD
Retailer 16$9,856 NZD
Retailer 4$10,138 NZD
Retailer 5$10,731 NZD
Retailer 14$10,733 NZD
Retailer 17$11,446 NZD
Retailer 8$11,627 NZD
Retailer 15$11,806 NZD
Retailer 2$12,225 NZD
Retailer 6$12,757 NZD
Retailer 13$12,757 NZD
Retailer 7$13,183 NZD
Retailer 10$13,205 NZD
Retailer 9$13,415 NZD
Retailer 3$14,143 NZD
Retailer 11$17,885 NZD
NZ Jewellers$21,464 NZD

41 data points across 17 retailers

19 retailers$9,741 NZD to $21,464 NZD

B+
Cheapest Retailer
-
$9,741 NZD
$5,490 USD
B+
Retailer 2
-
$9,856 NZD
$5,555 USD
View
B+
Retailer 3
-
$10,138 NZD
$5,714 USD
View
B
Retailer 4
-
$10,530 NZD
A$9,131 AUD
View
Retailer 5
-
$10,633 NZD
$5,993 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$10,731 NZD
$6,048 USD
View
Final sale: no returns
B
Retailer 7
-
$10,733 NZD
$6,049 USD
View
B
Retailer 8
-
$11,446 NZD
$6,451 USD
View
B
Retailer 9
-
$11,627 NZD
$6,553 USD
View
B
Retailer 10
-
$11,806 NZD
$6,654 USD
View
B
Retailer 11
-
$12,225 NZD
£5,425 GBP
View
B
Retailer 12
-
$12,757 NZD
$7,190 USD
View
B
Retailer 13
-
$12,757 NZD
$7,190 USD
View
B
Retailer 14
-
$13,183 NZD
$7,430 USD
View
B
Retailer 15
-
$13,205 NZD
€7,088 EUR
View
B
Retailer 16
-
$13,415 NZD
$7,561 USD
View
Retailer 17
-
$14,143 NZD
$7,971 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$17,885 NZD
£7,937 GBP
View
Most Expensive
B
NZ Jewellers
a0390c18-3dae-4db9-8e16-bdab1875caac · Oct 30
$21,464 NZD
$12,097 USD
View
18 more retailers have this diamond
Prices start from $9,741 NZDSave up to $11,723 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.

B+
1.51ct Round
$9,741 NZD