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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2233997457

Certificate GIA 2233997457

Diamond specifications and retailer prices

From $7,052 NZD
HK$31,000 HKD
As of October 30, 2026
Save $7,967 NZD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $16,239 NZD at NZ Jewellers · As of September 27, 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 2233997457. Listed at 20 retailers as of October 29, 2026, with a 113% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2233997457
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.27 mm7.31 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2233997457
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: Oct 30
Current: $9,302 NZD|Low: $6,848 NZD|High: $15,651 NZD|Avg: $9,556 NZD|+5.4%
Retailer 1
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
October 30, 2026
Retailer 4$7,052 NZD
Retailer 16$7,420 NZD
Retailer 15$7,765 NZD
Retailer 8$7,785 NZD
Retailer 5$7,841 NZD
Retailer 12$7,875 NZD
Retailer 3$8,016 NZD
Retailer 2$8,482 NZD
Retailer 6$8,784 NZD
Retailer 10$8,993 NZD
Retailer 1$9,302 NZD
Retailer 7$9,503 NZD
Retailer 9$10,645 NZD
Retailer 13$11,422 NZD
Retailer 14$14,530 NZD
Retailer 11$15,019 NZD

31 data points across 16 retailers

20 retailers$7,052 NZD to $15,019 NZD

A
Cheapest Retailer
-
$7,052 NZD
HK$31,000 HKD
A
Retailer 2
-
$7,420 NZD
$4,175 USD
View
B+
Retailer 3
-
$7,765 NZD
$4,369 USD
View
Retailer 4
-
$7,785 NZD
$4,380 USD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
$7,841 NZD
$4,412 USD
View
Final sale: no returns
B+
Retailer 6
-
$7,875 NZD
$4,431 USD
View
B+
Retailer 7
-
$8,016 NZD
$4,510 USD
View
B+
Retailer 8
-
$8,482 NZD
$4,772 USD
View
Retailer 9
-
$8,784 NZD
SGD 6,679 SGD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$8,993 NZD
$5,060 USD
View
B+
Retailer 11
-
$9,066 NZD
A$7,848 AUD
View
B
Retailer 12
-
$9,302 NZD
£4,121 GBP
View
Retailer 13
-
$9,503 NZD
A$8,226 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$10,321 NZD
CA$8,065 CAD
View
B
Retailer 15
-
$10,645 NZD
€5,704 EUR
View
B
Retailer 16
-
$11,422 NZD
ZAR 103,820 ZAR
View
B
Retailer 17
-
$14,530 NZD
$8,175 USD
View
B
Retailer 18
-
$15,019 NZD
£6,654 GBP
View
Retailer 19
-
$15,688 NZD
$8,827 USD
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
ab1275af-3f0b-453c-948a-a532aab2f23a · Sep 27
$16,239 NZD
$9,137 USD
View
Price last confirmed 36 days ago
19 more retailers have this diamond
Prices start from $7,052 NZDSave up to $7,967 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
$7,052 NZD