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Round|Natural|IGI

0.51ct K I1 Round Natural Diamond

VG • K/I1 • IGI 497152358

Shape and cutting style on the report: Round brilliant

Certificate IGI 497152358

Diamond specifications and retailer prices

From $366 AUD
As of November 5, 2026
Save $1,289 AUD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,654 AUD at NZ Jewellers · As of November 4, 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 K colour (faint-tinted) and I1 clarity (included), with a very-good cut grade and certified by IGI 497152358. Listed at 8 retailers as of November 4, 2026, with prices from $366 to $1,654, a $1,289 spread on the same certified stone. NZ Jewellers lists it at $1,654. 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
K
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.7°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 497152358
Dimensions5.03 × 5.08 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.03 mm5.08 mm0.51 ctK / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 497152358
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.5%

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: Nov 5
Current: $707 AUD|Low: $377 AUD|High: $713 AUD|Avg: $531 AUD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$380 AUD
Retailer 3$493 AUD
Retailer 4$549 AUD
Retailer 1$707 AUD

15 data points across 4 retailers

8 retailers$366 AUD to $1,654 AUD

B+
Cheapest Retailer
-
$366 AUD
Retailer 2
-
$393 AUD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$407 AUD
View
B+
Retailer 4
-
$480 AUD
View
B+
Retailer 5
-
$491 AUD
View
B+
Retailer 6
-
$493 AUD
View
B
Retailer 7
-
$707 AUD
View
Most Expensive
C
NZ Jewellers
e58b5b7c-254f-4e35-9904-b43e898f50c2 · Nov 4
$1,654 AUD
$1,158 USD
View
7 more retailers have this diamond
Prices start from $366 AUDSave up to $1,289 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
$366 AUD