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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 $2,757 AUD
₹184,049 INR
As of October 30, 2026
Save $1,978 AUD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,926 AUD 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: $7,926 AUD|Low: $2,757 AUD|High: $7,926 AUD|Avg: $4,052 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4$2,757 AUD
Retailer 7$3,082 AUD
Retailer 3$3,090 AUD
Retailer 2$3,492 AUD
Retailer 9$3,500 AUD
Retailer 8$3,791 AUD
Retailer 6$4,375 AUD
Retailer 5$4,736 AUD
NZ Jewellers$7,926 AUD

35 data points across 9 retailers

10 retailers$2,757 AUD to $4,736 AUD

A
Cheapest Retailer
-
$2,757 AUD
₹184,049 INR
Retailer 2
-
$3,082 AUD
$2,160 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$3,090 AUD
$2,166 USD
View
A
Retailer 4
-
$3,492 AUD
$2,447 USD
View
B+
Retailer 5
-
$3,500 AUD
$2,453 USD
View
Final sale: no returns
Retailer 6
-
$3,791 AUD
$2,657 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$3,937 AUD
$2,759 USD
View
Price last confirmed 18 days ago
Retailer 8
-
$4,375 AUD
$3,066 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
$4,736 AUD
€3,161 EUR
View
Most Expensive
NZ Jewellers
9ee3b73f-da5f-4730-98eb-540b96530d04 · Oct 23
$7,926 AUD
$5,555 USD
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from $2,757 AUDSave up to $1,978 AUD

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
$2,757 AUD