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Round|Natural|IGI

0.51ct E I1 Round Natural Diamond

GD • E/I1 • IGI 617454909

Shape and cutting style on the report: Round brilliant

Certificate IGI 617454909

Diamond specifications and retailer prices

From $446 AUD
$313 USD
As of October 28, 2026
Save $1,261 AUD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,707 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded E colour (colourless) and I1 clarity (included), with a standard cut grade and certified by IGI 617454909. Listed at 7 retailers as of October 28, 2026, with prices from $446 to $1,707, a $1,261 spread on the same certified stone. NZ Jewellers lists it at $1,707. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30.5°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 617454909
Dimensions5.36 × 5.34 × 2.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
5.36 mm5.34 mm0.51 ctE / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 617454909
Side View
Table 67.0%Crown 30.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 55.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,707 AUD|Low: $469 AUD|High: $1,707 AUD|Avg: $880 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 4$476 AUD
Retailer 3$604 AUD
Retailer 5$669 AUD
Retailer 2$837 AUD
NZ Jewellers$1,707 AUD

20 data points across 5 retailers

7 retailers$446 AUD to $1,707 AUD

B+
Cheapest Retailer
-
$446 AUD
$313 USD
B+
Retailer 2
-
$480 AUD
$337 USD
View
B+
Retailer 3
-
$497 AUD
$349 USD
View
B+
Retailer 4
-
$599 AUD
$421 USD
View
B+
Retailer 5
-
$604 AUD
$424 USD
View
B+
Retailer 6
-
$837 AUD
€560 EUR
View
Most Expensive
C
NZ Jewellers
f2ac14a0-5c88-4de0-be75-746a70c3ebf4 · Oct 30
$1,707 AUD
$1,199 USD
View
6 more retailers have this diamond
Prices start from $446 AUDSave up to $1,261 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.

B+
0.51ct Round
$446 AUD