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0.51ct E I1 Round Natural Diamond

EX • E/I1 • IGI 274738077

Shape and cutting style on the report: Round brilliant

Certificate IGI 274738077

Diamond specifications and retailer prices

From $399 USD
As of October 28, 2026
Save $1,129 USD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,528 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 top-tier cut grade and certified by IGI 274738077. Listed at 7 retailers as of October 26, 2026, with prices from $399 to $1,528, a $1,129 spread on the same certified stone. NZ Jewellers lists it at $1,528. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
E
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 274738077
Dimensions5.09 × 5.13 × 3.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.09 mm5.13 mm0.51 ctE / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 274738077
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.4%

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: Oct 28
Current: $641 USD|Low: $429 USD|High: $645 USD|Avg: $557 USD|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 28, 2026
Retailer 2$435 USD
Retailer 3$565 USD
Retailer 4$599 USD
Retailer 1$641 USD

19 data points across 4 retailers

7 retailers$399 USD to $1,528 USD

A
Cheapest Retailer
-
$399 USD
A
Retailer 2
-
$429 USD
View
A
Retailer 3
-
$429 USD
View
A
Retailer 4
-
$460 USD
View
B+
Retailer 5
-
$565 USD
View
B+
Retailer 6
-
$641 USD
€610 EUR
View
Most Expensive
C
NZ Jewellers
ebe31410-8f7a-4dd7-9fa4-3b6dc0c0339e · Oct 26
$1,528 USD
View
6 more retailers have this diamond
Prices start from $399 USDSave up to $1,129 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
0.51ct Round
$399 USD