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Round|Natural|IGI

0.51ct K IF Round Natural Diamond

EX • K/IF • IGI 502190811

Shape and cutting style on the report: Round brilliant

Certificate IGI 502190811

Diamond specifications and retailer prices

From $770 AUD
As of November 4, 2026
Save $881 AUD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,742 AUD at NZ Jewellers · As of October 17, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 502190811. Listed at 14 retailers as of November 4, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 502190811
Dimensions5.12 × 5.16 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
5.12 mm5.16 mm0.51 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 502190811
Side View
Table 59.5%Crown 34.4°GirdlePavilion 41.5°Culet: NoneDepth 61.5%

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: Nov 4
Current: $915 AUD|Low: $780 AUD|High: $1,672 AUD|Avg: $1,043 AUD|+6.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7$780 AUD
Retailer 2$867 AUD
Retailer 1$915 AUD
Retailer 6$1,012 AUD
Retailer 5$1,071 AUD
Retailer 3$1,109 AUD
Retailer 4$1,650 AUD

34 data points across 7 retailers

14 retailers$770 AUD to $1,650 AUD

Retailer 1
-
$716 AUD
Price last confirmed 20 days ago
Retailer 2
-
$770 AUD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$770 AUD
View
Retailer 4
-
$770 AUD
View
Price last confirmed 22 days ago
Retailer 5
-
$770 AUD
View
Price last confirmed 8 days ago
Retailer 6
-
$825 AUD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$867 AUD
View
B+
Retailer 8
-
$905 AUD
View
B+
Retailer 9
-
$915 AUD
View
B+
Retailer 10
-
$1,012 AUD
View
B+
Retailer 11
-
$1,071 AUD
View
B+
Retailer 12
-
$1,109 AUD
View
B
Retailer 13
-
$1,650 AUD
View
Most Expensive
NZ Jewellers
7572497d-371a-432a-b957-4212bf7a4aaf · Oct 17
$2,742 AUD
$1,884 USD
View
Price last confirmed 20 days ago
13 more retailers have this diamond
Prices start from $770 AUDSave up to $881 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.

A
0.51ct Round
$770 AUD