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Round|Natural|IGI

0.51ct E I1 Round Natural Diamond

VG • E/I1 • IGI 265733540

Shape and cutting style on the report: Round brilliant

Certificate IGI 265733540

Diamond specifications and retailer prices

From $344 USD
As of October 28, 2026
Save $976 USD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,320 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 very-good cut grade and certified by IGI 265733540. Listed at 7 retailers as of October 26, 2026, with prices from $344 to $1,320, a $976 spread on the same certified stone. NZ Jewellers lists it at $1,320. 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
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryVery Good
FluorescenceFaint
Crown angle38°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 265733540
Dimensions4.97 × 4.99 × 3.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.97 mm4.99 mm0.51 ctE / I1
OriginNatural
CutVery Good
PolishGood
SymmetryVery Good
FluorescenceFaint
CertificateIGI 265733540
Side View
Table 57.5%Crown 38°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 65.5%

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: $638 USD|Low: $366 USD|High: $638 USD|Avg: $499 USD|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$371 USD
Retailer 3$481 USD
Retailer 4$517 USD
Retailer 1$638 USD

26 data points across 4 retailers

7 retailers$344 USD to $1,320 USD

B+
Cheapest Retailer
-
$344 USD
B+
Retailer 2
-
$371 USD
View
B+
Retailer 3
-
$384 USD
View
B+
Retailer 4
-
$463 USD
View
B+
Retailer 5
-
$481 USD
View
B+
Retailer 6
-
$638 USD
€608 EUR
View
Most Expensive
C
NZ Jewellers
123be8cd-e4cd-45fc-9cb7-c0e69be1ee0d · Oct 26
$1,320 USD
View
6 more retailers have this diamond
Prices start from $344 USDSave up to $976 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
$344 USD