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Round|Natural|IGI

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 713545321

Shape and cutting style on the report: Round brilliant

Certificate IGI 713545321

Diamond specifications and retailer prices

From $4,551 NZD
$2,565 USD
As of November 1, 2026
Save $6,070 NZD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,621 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 IGI 713545321. Listed at 20 retailers as of October 30, 2026, with prices from $4,551 to $10,621, a $6,070 spread on the same certified stone. NZ Jewellers lists it at $10,621. 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
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 713545321
Dimensions7.30 × 7.18 × 4.59 mm
L/W Ratio1.02
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
7.30 mm7.18 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 713545321
Side View
Table 57.0%Crown 36.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.2%

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: $10,621 NZD|Low: $4,297 NZD|High: $10,621 NZD|Avg: $6,066 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
November 2, 2026
Retailer 15$4,551 NZD
Retailer 14$4,688 NZD
Retailer 5$4,714 NZD
Retailer 3$4,977 NZD
Retailer 7$5,080 NZD
Retailer 4$5,275 NZD
Retailer 8$5,496 NZD
Retailer 13$5,573 NZD
Retailer 6$5,862 NZD
Retailer 9$5,921 NZD
Retailer 12$5,938 NZD
Retailer 2$6,068 NZD
Retailer 11$6,245 NZD
Retailer 10$8,495 NZD
NZ Jewellers$10,621 NZD

39 data points across 15 retailers

20 retailers$4,551 NZD to $10,621 NZD

A
Cheapest Retailer
-
$4,551 NZD
$2,565 USD
A
Retailer 2
-
$4,688 NZD
$2,642 USD
View
Final sale: no returns
A
Retailer 3
-
$4,714 NZD
$2,657 USD
View
Retailer 4
-
$4,842 NZD
$2,729 USD
View
Price last confirmed 84 days ago
A
Retailer 5
-
$4,977 NZD
$2,805 USD
View
Retailer 6
-
$5,080 NZD
$2,863 USD
View
Price last confirmed 37 days ago
A
Retailer 7
-
$5,080 NZD
$2,863 USD
View
A
Retailer 8
-
$5,275 NZD
$2,973 USD
View
A
Retailer 9
-
$5,332 NZD
$3,005 USD
View
A
Retailer 10
-
$5,496 NZD
£2,439 GBP
View
B+
Retailer 11
-
$5,573 NZD
$3,141 USD
View
B+
Retailer 12
-
$5,862 NZD
$3,304 USD
View
Retailer 13
-
$5,862 NZD
$3,304 USD
View
Price last confirmed 41 days ago
A
Retailer 14
-
$5,921 NZD
€3,178 EUR
View
B+
Retailer 15
-
$5,938 NZD
£2,635 GBP
View
A
Retailer 16
-
$6,068 NZD
£2,693 GBP
View
A
Retailer 17
-
$6,245 NZD
ZAR 56,858 ZAR
View
B+
Retailer 18
-
$8,495 NZD
£3,770 GBP
View
Retailer 19
-
$10,621 NZD
$5,986 USD
View
Price last confirmed 38 days ago
Most Expensive
B
NZ Jewellers
d4139d59-90a1-44fe-8074-bf5e2509c708 · Oct 30
$10,621 NZD
$5,986 USD
View
19 more retailers have this diamond
Prices start from $4,551 NZDSave up to $6,070 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
$4,551 NZD