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Round|Natural|IGI

1.51ct I I1 Round Natural Diamond

EX • I/I1 • IGI 528214305

Shape and cutting style on the report: Round brilliant

Certificate IGI 528214305

Diamond specifications and retailer prices

From $3,078 AUD
$2,162 USD
As of November 1, 2026
Save $4,044 AUD (57%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,122 AUD 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 I colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 528214305. Listed at 7 retailers as of October 30, 2026, with prices from $3,078 to $7,122, a $4,044 spread on the same certified stone. NZ Jewellers lists it at $7,122. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 528214305
Dimensions7.20 × 7.25 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.20 mm7.25 mm1.51 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 528214305
Side View
Table 56.0%Crown 36.5°GirdlePavilion 40.5°Culet: NoneDepth 63.3%

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: $4,235 AUD|Low: $2,383 AUD|High: $4,254 AUD|Avg: $3,448 AUD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$2,383 AUD
Retailer 2$3,078 AUD
Retailer 3$4,054 AUD
Retailer 1$4,235 AUD

18 data points across 4 retailers

7 retailers$3,078 AUD to $7,122 AUD

A
Cheapest Retailer
-
$3,078 AUD
$2,162 USD
B+
Retailer 2
-
$3,407 AUD
$2,393 USD
View
B+
Retailer 3
-
$3,407 AUD
$2,393 USD
View
B+
Retailer 4
-
$3,565 AUD
$2,504 USD
View
B+
Retailer 5
-
$3,931 AUD
$2,761 USD
View
B+
Retailer 6
-
$4,235 AUD
€2,833 EUR
View
Most Expensive
B
NZ Jewellers
9a5ac9b6-24dc-42a5-a52f-fd65a3a50ce6 · Oct 30
$7,122 AUD
$5,003 USD
View
6 more retailers have this diamond
Prices start from $3,078 AUDSave up to $4,044 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
$3,078 AUD