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Round|Natural|IGI

1.51ct H I1 Round Natural Diamond

EX • H/I1 • IGI 743559100

Shape and cutting style on the report: Round brilliant

Certificate IGI 743559100

Diamond specifications and retailer prices

From $3,435 NZD
₹184,049 INR
As of October 30, 2026
Save $2,464 NZD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,873 NZD at NZ Jewellers · As of October 23, 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 H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 743559100. Listed at 10 retailers as of October 30, 2026, with a 72% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 743559100
Dimensions7.37 × 7.33 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.37 mm7.33 mm1.51 ctH / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743559100
Side View
Table 58.0%Crown 36.1°Girdle: MED-STKPavilion 40.8°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: $9,873 NZD|Low: $3,434 NZD|High: $9,873 NZD|Avg: $5,048 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4$3,435 NZD
Retailer 7$3,839 NZD
Retailer 3$3,849 NZD
Retailer 2$4,349 NZD
Retailer 9$4,360 NZD
Retailer 8$4,722 NZD
Retailer 6$5,449 NZD
Retailer 5$5,899 NZD
NZ Jewellers$9,873 NZD

35 data points across 9 retailers

10 retailers$3,435 NZD to $5,899 NZD

A
Cheapest Retailer
-
$3,435 NZD
₹184,049 INR
Retailer 2
-
$3,839 NZD
$2,160 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$3,849 NZD
$2,166 USD
View
A
Retailer 4
-
$4,349 NZD
$2,447 USD
View
B+
Retailer 5
-
$4,360 NZD
$2,453 USD
View
Final sale: no returns
Retailer 6
-
$4,722 NZD
$2,657 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$4,904 NZD
$2,759 USD
View
Price last confirmed 18 days ago
Retailer 8
-
$5,449 NZD
$3,066 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
$5,899 NZD
€3,161 EUR
View
Most Expensive
NZ Jewellers
9ee3b73f-da5f-4730-98eb-540b96530d04 · Oct 23
$9,873 NZD
$5,555 USD
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from $3,435 NZDSave up to $2,464 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
$3,435 NZD