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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 $223 USD
As of November 6, 2026
Save $1,138 USD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,361 USD 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 $223 to $1,361, a $1,138 spread on the same certified stone. NZ Jewellers lists it at $1,361. 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
Color
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: $1,361 USD|Low: $223 USD|High: $1,370 USD|Avg: $463 USD|+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$223 USD
Retailer 5$268 USD
Retailer 11$300 USD
Retailer 4$335 USD
Retailer 13$337 USD
Retailer 8$378 USD
Retailer 12$395 USD
Retailer 10$404 USD
Retailer 7$430 USD
Retailer 3$508 USD
Retailer 9$515 USD
Retailer 6$594 USD
NZ Jewellers$1,361 USD

19 data points across 13 retailers

13 retailers$223 USD to $1,361 USD

A
Cheapest Retailer
-
$223 USD
A
Retailer 2
-
$268 USD
View
A
Retailer 3
-
$300 USD
View
Retailer 4
-
$335 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$337 USD
View
A
Retailer 6
-
$378 USD
View
A
Retailer 7
-
$395 USD
View
A
Retailer 8
-
$404 USD
View
B+
Retailer 9
-
$430 USD
View
B+
Retailer 10
-
$508 USD
View
B+
Retailer 11
-
$515 USD
View
B+
Retailer 12
-
$594 USD
View
Most Expensive
C
NZ Jewellers
3b2466e1-a7bf-4887-844f-bb91cdcbcbbe · Nov 4
$1,361 USD
View
12 more retailers have this diamond
Prices start from $223 USDSave up to $1,138 USD

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
$223 USD