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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1246015618

Certificate GIA 1246015618

Diamond specifications and retailer prices

From $6,564 NZD
$3,700 USD
As of October 30, 2026
Save $10,113 NZD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $16,677 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 1246015618. Listed at 17 retailers as of October 30, 2026, with prices from $6,564 to $16,677, a $10,113 spread on the same certified stone. NZ Jewellers lists it at $16,677. 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
FluorescenceStrong
Crown angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 1246015618
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.31 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246015618
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilionCulet: NoneDepth 62.5%

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: Oct 30
Current: $16,677 NZD|Low: $6,564 NZD|High: $16,677 NZD|Avg: $10,010 NZD
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 4$6,564 NZD
Retailer 5$7,878 NZD
Retailer 12$7,993 NZD
Retailer 6$8,142 NZD
Retailer 14$8,469 NZD
Retailer 15$8,637 NZD
Retailer 8$9,033 NZD
Retailer 13$9,033 NZD
Retailer 16$9,033 NZD
Retailer 3$9,517 NZD
Retailer 2$9,664 NZD
Retailer 9$10,424 NZD
Retailer 7$11,001 NZD
Retailer 10$11,236 NZD
Retailer 17$11,258 NZD
Retailer 11$15,967 NZD
NZ Jewellers$16,677 NZD

20 data points across 17 retailers

17 retailers$6,564 NZD to $16,677 NZD

A
Cheapest Retailer
-
$6,564 NZD
$3,700 USD
B+
Retailer 2
-
$7,878 NZD
$4,440 USD
View
B+
Retailer 3
-
$7,993 NZD
$4,505 USD
View
B+
Retailer 4
-
$8,142 NZD
$4,589 USD
View
B+
Retailer 5
-
$8,469 NZD
CA$6,629 CAD
View
B+
Retailer 6
-
$8,637 NZD
$4,868 USD
View
B
Retailer 7
-
$9,033 NZD
$5,091 USD
View
B
Retailer 8
-
$9,033 NZD
$5,091 USD
View
B
Retailer 9
-
$9,033 NZD
$5,091 USD
View
B
Retailer 10
-
$9,517 NZD
$5,364 USD
View
B
Retailer 11
-
$9,664 NZD
£4,289 GBP
View
B
Retailer 12
-
$10,424 NZD
$5,875 USD
View
Retailer 13
-
$11,001 NZD
$6,200 USD
View
Price last confirmed 19 days ago
B
Retailer 14
-
$11,236 NZD
€6,031 EUR
View
B
Retailer 15
-
$11,258 NZD
$6,345 USD
View
B
Retailer 16
-
$15,967 NZD
£7,086 GBP
View
Most Expensive
C
NZ Jewellers
539454d3-ef7b-4ddb-ab23-0a64fd815bbf · Oct 30
$16,677 NZD
$9,399 USD
View
16 more retailers have this diamond
Prices start from $6,564 NZDSave up to $10,113 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
$6,564 NZD