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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6442857890

Certificate GIA 6442857890

Diamond specifications and retailer prices

From $5,360 NZD
HK$23,600 HKD
As of November 1, 2026
Save $7,220 NZD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,580 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 6442857890. Listed at 17 retailers as of October 30, 2026, with prices from $5,360 to $12,580, a $7,220 spread on the same certified stone. NZ Jewellers lists it at $12,580. 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 angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6442857890
Dimensions7.47 × 7.44 × 4.53 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
7.47 mm7.44 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442857890
Side View
Table 59.0%Crown 32°Girdle: MED-NULPavilion 41.8°Culet: NoneDepth 60.8%

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: $12,580 NZD|Low: $5,314 NZD|High: $12,693 NZD|Avg: $7,860 NZD|-0.9%
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
November 2, 2026
Retailer 10$5,360 NZD
Retailer 5$6,166 NZD
Retailer 7$6,370 NZD
Retailer 14$6,664 NZD
Retailer 4$6,768 NZD
Retailer 6$7,221 NZD
Retailer 11$7,221 NZD
Retailer 13$7,221 NZD
Retailer 2$7,340 NZD
Retailer 12$7,482 NZD
Retailer 8$8,136 NZD
Retailer 15$8,247 NZD
Retailer 3$8,332 NZD
Retailer 9$12,076 NZD
NZ Jewellers$12,580 NZD

33 data points across 15 retailers

17 retailers$5,360 NZD to $12,580 NZD

A
Cheapest Retailer
-
$5,360 NZD
HK$23,600 HKD
A
Retailer 2
-
$6,166 NZD
$3,475 USD
View
A
Retailer 3
-
$6,370 NZD
$3,590 USD
View
B+
Retailer 4
-
$6,664 NZD
$3,756 USD
View
Final sale: no returns
A
Retailer 5
-
$6,768 NZD
SGD 5,155 SGD
View
B+
Retailer 6
-
$6,871 NZD
A$5,958 AUD
View
Retailer 7
-
$6,926 NZD
$3,904 USD
View
Price last confirmed 105 days ago
B+
Retailer 8
-
$7,221 NZD
$4,070 USD
View
B+
Retailer 9
-
$7,221 NZD
$4,070 USD
View
B+
Retailer 10
-
$7,221 NZD
$4,070 USD
View
B+
Retailer 11
-
$7,340 NZD
£3,258 GBP
View
B+
Retailer 12
-
$7,482 NZD
$4,217 USD
View
B+
Retailer 13
-
$8,136 NZD
€4,367 EUR
View
B+
Retailer 14
-
$8,247 NZD
£3,660 GBP
View
B+
Retailer 15
-
$8,332 NZD
$4,696 USD
View
B
Retailer 16
-
$12,076 NZD
£5,359 GBP
View
Most Expensive
B
NZ Jewellers
a69f990f-567b-4bf7-a2aa-d4fef9127bd3 · Oct 30
$12,580 NZD
$7,090 USD
View
16 more retailers have this diamond
Prices start from $5,360 NZDSave up to $7,220 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
$5,360 NZD