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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2377826972

Certificate GIA 2377826972

Diamond specifications and retailer prices

From $2,123 AUD
As of November 6, 2026
Save $4,026 AUD (65%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,148 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 2377826972. Listed at 17 retailers as of November 5, 2026, with prices from $2,123 to $6,148, a $4,026 spread on the same certified stone. NZ Jewellers lists it at $6,148. 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 angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2377826972
Dimensions6.38 × 6.35 × 4.02 mm
L/W Ratio1.00
Top View
6.38 mm6.35 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2377826972
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.2%

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 6
Current: $2,123 AUD|Low: $2,123 AUD|High: $5,213 AUD|Avg: $3,327 AUD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$2,123 AUD
Retailer 7$2,138 AUD
Retailer 2$2,853 AUD
Retailer 3$2,986 AUD
Retailer 4$3,176 AUD
Retailer 6$3,626 AUD
Retailer 5$5,137 AUD

31 data points across 7 retailers

17 retailers$2,123 AUD to $6,148 AUD

A
Cheapest Retailer
-
$2,123 AUD
A
Retailer 2
-
$2,138 AUD
View
B+
Retailer 3
-
$2,578 AUD
View
Retailer 4
-
$2,624 AUD
View
Price last confirmed 82 days ago
B+
Retailer 5
-
$2,694 AUD
View
B+
Retailer 6
-
$2,853 AUD
View
B+
Retailer 7
-
$2,941 AUD
View
B+
Retailer 8
-
$2,986 AUD
View
B+
Retailer 9
-
$3,077 AUD
View
B
Retailer 10
-
$3,138 AUD
View
B+
Retailer 11
-
$3,176 AUD
View
B
Retailer 12
-
$3,211 AUD
View
B
Retailer 13
-
$3,393 AUD
View
B+
Retailer 14
-
$3,626 AUD
View
B
Retailer 15
-
$4,056 AUD
View
B
Retailer 16
-
$5,137 AUD
View
Most Expensive
C
NZ Jewellers
63169afc-01db-4f88-96d9-9f46409f14aa · Nov 5
$6,148 AUD
$4,304 USD
View
16 more retailers have this diamond
Prices start from $2,123 AUDSave up to $4,026 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
$2,123 AUD