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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6555414004

Certificate GIA 6555414004

Diamond specifications and retailer prices

From $2,258 AUD
As of November 5, 2026
Save $4,411 AUD (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,670 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 6555414004. Listed at 16 retailers as of November 5, 2026, with prices from $2,258 to $6,670, a $4,411 spread on the same certified stone. NZ Jewellers lists it at $6,670. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555414004
Dimensions6.32 × 6.37 × 3.96 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
6.32 mm6.37 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555414004
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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 5
Current: $6,670 AUD|Low: $2,140 AUD|High: $6,670 AUD|Avg: $2,983 AUD|+25.9%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 16$2,258 AUD
Retailer 3$2,390 AUD
Retailer 15$2,423 AUD
Retailer 4$2,477 AUD
Retailer 8$2,477 AUD
Retailer 17$2,577 AUD
Retailer 7$2,591 AUD
Retailer 9$2,611 AUD
Retailer 2$2,653 AUD
Retailer 5$2,671 AUD
Retailer 14$2,858 AUD
Retailer 6$2,861 AUD
Retailer 10$2,951 AUD
Retailer 13$3,513 AUD
Retailer 12$3,960 AUD
Retailer 11$4,778 AUD
NZ Jewellers$6,670 AUD

18 data points across 17 retailers

16 retailers$2,258 AUD to $6,670 AUD

A
Cheapest Retailer
-
$2,258 AUD
A
Retailer 2
-
$2,390 AUD
View
A
Retailer 3
-
$2,423 AUD
View
B+
Retailer 4
-
$2,477 AUD
View
B+
Retailer 5
-
$2,577 AUD
View
B+
Retailer 6
-
$2,591 AUD
View
Retailer 7
-
$2,611 AUD
View
Price last confirmed 22 days ago
B+
Retailer 8
-
$2,653 AUD
View
B+
Retailer 9
-
$2,671 AUD
View
B+
Retailer 10
-
$2,858 AUD
View
B+
Retailer 11
-
$2,861 AUD
View
B
Retailer 12
-
$2,951 AUD
View
B
Retailer 13
-
$3,513 AUD
View
B
Retailer 14
-
$3,960 AUD
View
B
Retailer 15
-
$4,778 AUD
View
Most Expensive
C
NZ Jewellers
7b1f8c66-e901-4452-839e-81f03380d61d · Nov 5
$6,670 AUD
$4,669 USD
View
15 more retailers have this diamond
Prices start from $2,258 AUDSave up to $4,411 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
$2,258 AUD