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Round|Natural|IGI

1.51ct F I1 Round Natural Diamond

EX • F/I1 • IGI 647430353

Shape and cutting style on the report: Round brilliant

Certificate IGI 647430353

Diamond specifications and retailer prices

From $2,715 USD
As of November 1, 2026
Save $820 USD (23%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,283 USD 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 F colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 647430353. Listed at 7 retailers as of November 1, 2026, with a 30% 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
F
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 647430353
Dimensions7.30 × 7.33 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.30 mm7.33 mm1.51 ctF / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 647430353
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 41.7°Culet: NoneDepth 62.8%

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: $5,283 USD|Low: $2,715 USD|High: $5,283 USD|Avg: $3,580 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3$2,715 USD
Retailer 10$2,798 USD
Retailer 6$3,032 USD
Retailer 7$3,032 USD
Retailer 4$3,149 USD
Retailer 5$3,499 USD
Retailer 2$3,535 USD
Retailer 8$3,608 USD
Retailer 9$4,898 USD
NZ Jewellers$5,283 USD

20 data points across 10 retailers

7 retailers$2,715 USD to $3,535 USD

A
Cheapest Retailer
-
$2,715 USD
Retailer 2
-
$3,032 USD
View
Price last confirmed 8 days ago
Retailer 3
-
$3,032 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$3,149 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$3,499 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$3,535 USD
€3,367 EUR
View
Most Expensive
NZ Jewellers
f652f98f-45d1-4540-8311-1d6516cf5afc · Oct 23
$5,283 USD
View
Price last confirmed 10 days ago
6 more retailers have this diamond
Prices start from $2,715 USDSave up to $820 USD

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
$2,715 USD