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Round|Natural|GIA

0.65ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6512817691

Certificate GIA 6512817691

Diamond specifications and retailer prices

From $507 AUD
As of November 4, 2026
Save $501 AUD (50%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,008 AUD at Yorxs · As of November 5, 2026
View at Yorxs

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512817691. Listed at 5 retailers as of November 4, 2026, with prices from $507 to $1,008, a $501 spread on the same certified stone. Yorxs lists it at $1,008. 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

0.65
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6512817691
Dimensions5.66 × 5.64 × 3.37 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
5.66 mm5.64 mm0.65 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6512817691
Side View
Table 61.0%Crown 32.5°Girdle: ThickPavilion 41.6°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,001 AUD|Low: $507 AUD|High: $1,021 AUD|Avg: $797 AUD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 6, 2026
Retailer 3$507 AUD
Retailer 2$726 AUD
Retailer 4$736 AUD
Retailer 1$1,001 AUD
Yorxs$1,008 AUD

37 data points across 5 retailers

5 retailers$507 AUD to $1,008 AUD

A
Cheapest Retailer
-
$507 AUD
B+
Retailer 2
-
$726 AUD
View
B+
Retailer 3
-
$736 AUD
View
B+
Retailer 4
-
$1,001 AUD
View
Most Expensive
B+
Yorxs
91578 · Nov 5
$1,008 AUD
€672 EUR
View
4 more retailers have this diamond
Prices start from $507 AUDSave up to $501 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
0.65ct Round
$507 AUD