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Round|Natural|IGI

0.51ct L I1 Round Natural Diamond

VG • L/I1 • IGI 510166168

Shape and cutting style on the report: Round brilliant

Certificate IGI 510166168

Diamond specifications and retailer prices

From $381 AUD
As of November 5, 2026
Save $1,344 AUD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,726 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 L colour (faint-tinted) and I1 clarity (included), with a very-good cut grade and certified by IGI 510166168. Listed at 8 retailers as of November 4, 2026, with prices from $381 to $1,726, a $1,344 spread on the same certified stone. NZ Jewellers lists it at $1,726. 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
L
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle32.7°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 510166168
Dimensions5.09 × 5.12 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.09 mm5.12 mm0.51 ctL / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateIGI 510166168
Side View
Table 58.0%Crown 32.7°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 62.0%

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: $639 AUD|Low: $396 AUD|High: $646 AUD|Avg: $534 AUD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$399 AUD
Retailer 3$519 AUD
Retailer 4$584 AUD
Retailer 1$639 AUD

15 data points across 4 retailers

8 retailers$381 AUD to $1,726 AUD

B+
Cheapest Retailer
-
$381 AUD
Retailer 2
-
$410 AUD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$424 AUD
View
B+
Retailer 4
-
$503 AUD
View
B+
Retailer 5
-
$513 AUD
View
B+
Retailer 6
-
$519 AUD
View
B
Retailer 7
-
$639 AUD
View
Most Expensive
C
NZ Jewellers
0156d9bf-f26d-4aa4-9541-84665cb34891 · Nov 4
$1,726 AUD
$1,208 USD
View
7 more retailers have this diamond
Prices start from $381 AUDSave up to $1,344 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
$381 AUD