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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6505210996

Certificate GIA 6505210996

Diamond specifications and retailer prices

From $2,056 AUD
As of November 6, 2026
Save $4,895 AUD (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,951 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505210996. Listed at 18 retailers as of November 5, 2026, with prices from $2,056 to $6,951, a $4,895 spread on the same certified stone. NZ Jewellers lists it at $6,951. 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

1.00
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505210996
Dimensions6.42 × 6.39 × 3.99 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.42 mm6.39 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505210996
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.3%

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: $2,056 AUD|Low: $2,056 AUD|High: $5,020 AUD|Avg: $2,933 AUD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$2,056 AUD
Retailer 7$2,084 AUD
Retailer 8$2,576 AUD
Retailer 9$2,657 AUD
Retailer 6$2,738 AUD
Retailer 2$2,764 AUD
Retailer 3$3,077 AUD
Retailer 5$3,510 AUD
Retailer 4$4,980 AUD

31 data points across 9 retailers

18 retailers$2,056 AUD to $6,951 AUD

A
Cheapest Retailer
-
$2,056 AUD
A
Retailer 2
-
$2,084 AUD
View
B+
Retailer 3
-
$2,500 AUD
View
B+
Retailer 4
-
$2,576 AUD
View
B+
Retailer 5
-
$2,657 AUD
View
B+
Retailer 6
-
$2,738 AUD
View
B+
Retailer 7
-
$2,764 AUD
View
Retailer 8
-
$2,850 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,850 AUD
View
B+
Retailer 10
-
$2,893 AUD
View
B+
Retailer 11
-
$2,981 AUD
View
B+
Retailer 12
-
$3,047 AUD
View
B+
Retailer 13
-
$3,077 AUD
View
B
Retailer 14
-
$3,288 AUD
View
B
Retailer 15
-
$3,510 AUD
View
B
Retailer 16
-
$4,056 AUD
View
B
Retailer 17
-
$4,980 AUD
View
Most Expensive
C
NZ Jewellers
98a302cd-3331-4711-b280-640809bb727d · Nov 5
$6,951 AUD
$4,866 USD
View
17 more retailers have this diamond
Prices start from $2,056 AUDSave up to $4,895 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
1.00ct Round
$2,056 AUD