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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 $555 NZD
$313 USD
As of October 28, 2026
Save $1,572 NZD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,127 NZD 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 $555 to $2,127, a $1,572 spread on the same certified stone. NZ Jewellers lists it at $2,127. 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: $2,127 NZD|Low: $585 NZD|High: $2,127 NZD|Avg: $1,097 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 4$593 NZD
Retailer 3$753 NZD
Retailer 5$834 NZD
Retailer 2$1,043 NZD
NZ Jewellers$2,127 NZD

20 data points across 5 retailers

7 retailers$555 NZD to $2,127 NZD

B+
Cheapest Retailer
-
$555 NZD
$313 USD
B+
Retailer 2
-
$598 NZD
$337 USD
View
B+
Retailer 3
-
$619 NZD
$349 USD
View
B+
Retailer 4
-
$747 NZD
$421 USD
View
B+
Retailer 5
-
$753 NZD
$424 USD
View
B+
Retailer 6
-
$1,043 NZD
€560 EUR
View
Most Expensive
C
NZ Jewellers
f2ac14a0-5c88-4de0-be75-746a70c3ebf4 · Oct 30
$2,127 NZD
$1,199 USD
View
6 more retailers have this diamond
Prices start from $555 NZDSave up to $1,572 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.

B+
0.51ct Round
$555 NZD