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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 $313 USD
As of October 28, 2026
Save $886 USD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,199 USD at NZ Jewellers · As of October 26, 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 26, 2026, with prices from $313 to $1,199, a $886 spread on the same certified stone. NZ Jewellers lists it at $1,199. 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
Color
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: $1,199 USD|Low: $330 USD|High: $1,199 USD|Avg: $619 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 28, 2026
Retailer 4$334 USD
Retailer 3$424 USD
Retailer 5$470 USD
Retailer 2$586 USD
NZ Jewellers$1,199 USD

19 data points across 5 retailers

7 retailers$313 USD to $1,199 USD

B+
Cheapest Retailer
-
$313 USD
B+
Retailer 2
-
$337 USD
View
B+
Retailer 3
-
$349 USD
View
B+
Retailer 4
-
$421 USD
View
B+
Retailer 5
-
$424 USD
View
B+
Retailer 6
-
$586 USD
€558 EUR
View
Most Expensive
C
NZ Jewellers
f2ac14a0-5c88-4de0-be75-746a70c3ebf4 · Oct 26
$1,199 USD
View
6 more retailers have this diamond
Prices start from $313 USDSave up to $886 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.

B+
0.51ct Round
$313 USD