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Round|Natural|GIA

0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 6525636856

Certificate GIA 6525636856

Diamond specifications and retailer prices

From $319 AUD
As of November 6, 2026
Save $1,626 AUD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,944 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525636856. Listed at 13 retailers as of November 4, 2026, with prices from $319 to $1,944, a $1,626 spread on the same certified stone. NZ Jewellers lists it at $1,944. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6525636856
Dimensions5.12 × 5.08 × 3.20 mm
L/W Ratio1.01
Key to symbols
Crystal
Top View
5.12 mm5.08 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6525636856
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.7%

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 6
Current: $1,944 AUD|Low: $319 AUD|High: $1,957 AUD|Avg: $661 AUD|+13.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2$319 AUD
Retailer 5$383 AUD
Retailer 11$429 AUD
Retailer 4$479 AUD
Retailer 13$481 AUD
Retailer 8$540 AUD
Retailer 12$564 AUD
Retailer 10$577 AUD
Retailer 7$614 AUD
Retailer 3$726 AUD
Retailer 9$736 AUD
Retailer 6$849 AUD
NZ Jewellers$1,944 AUD

19 data points across 13 retailers

13 retailers$319 AUD to $1,944 AUD

A
Cheapest Retailer
-
$319 AUD
A
Retailer 2
-
$383 AUD
View
A
Retailer 3
-
$429 AUD
View
Retailer 4
-
$479 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$481 AUD
View
A
Retailer 6
-
$540 AUD
View
A
Retailer 7
-
$564 AUD
View
A
Retailer 8
-
$577 AUD
View
B+
Retailer 9
-
$614 AUD
View
B+
Retailer 10
-
$726 AUD
View
B+
Retailer 11
-
$736 AUD
View
B+
Retailer 12
-
$849 AUD
View
Most Expensive
C
NZ Jewellers
3b2466e1-a7bf-4887-844f-bb91cdcbcbbe · Nov 4
$1,944 AUD
$1,361 USD
View
12 more retailers have this diamond
Prices start from $319 AUDSave up to $1,626 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
$319 AUD