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Round|Natural|IGI

0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 800673924

Shape and cutting style on the report: Round brilliant

Certificate IGI 800673924

Diamond specifications and retailer prices

From $579 AUD
As of November 6, 2026
Save $33 AUD (5%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,536 AUD at NZ Jewellers · As of October 30, 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 L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 800673924. Listed at 6 retailers as of November 2, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.3°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 800673924
Dimensions5.09 × 5.14 × 3.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.09 mm5.14 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 800673924
Side View
Table 57.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.6%

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 6
Current: $1,536 AUD|Low: $339 AUD|High: $2,866 AUD|Avg: $807 AUD|-46.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 6$339 AUD
Retailer 3$379 AUD
Retailer 5$579 AUD
Retailer 4$611 AUD
Retailer 2$676 AUD
NZ Jewellers$1,536 AUD

27 data points across 6 retailers

6 retailers$579 AUD to $611 AUD

Retailer 1
-
$339 AUD
Price last confirmed 9 days ago
Retailer 2
-
$379 AUD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$579 AUD
View
B+
Retailer 4
-
$611 AUD
View
Retailer 5
-
$676 AUD
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
ce65d4e8-f910-4051-aa4c-b51b6c3e0d1d · Oct 30
$1,536 AUD
$1,075 USD
View
Price last confirmed 7 days ago
5 more retailers have this diamond
Prices start from $579 AUDSave up to $33 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
$579 AUD