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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2239108432

Certificate GIA 2239108432

Diamond specifications and retailer prices

From $2,378 AUD
As of November 6, 2026
Save $3,801 AUD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,180 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2239108432. Listed at 20 retailers as of November 5, 2026, with prices from $2,378 to $6,180, a $3,801 spread on the same certified stone. NZ Jewellers lists it at $6,180. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2239108432
Dimensions6.39 × 6.33 × 4.02 mm
L/W Ratio1.01
Top View
6.39 mm6.33 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2239108432
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.2%

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: $3,456 AUD|Low: $2,378 AUD|High: $5,241 AUD|Avg: $3,289 AUD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2$2,378 AUD
Retailer 10$2,440 AUD
Retailer 8$2,478 AUD
Retailer 3$2,750 AUD
Retailer 11$2,801 AUD
Retailer 9$3,086 AUD
Retailer 6$3,191 AUD
Retailer 1$3,456 AUD
Retailer 5$3,607 AUD
Retailer 4$3,746 AUD
Retailer 7$5,164 AUD

41 data points across 11 retailers

20 retailers$2,378 AUD to $6,180 AUD

A
Cheapest Retailer
-
$2,378 AUD
A
Retailer 2
-
$2,411 AUD
View
A
Retailer 3
-
$2,440 AUD
View
A
Retailer 4
-
$2,478 AUD
View
B+
Retailer 5
-
$2,516 AUD
View
B+
Retailer 6
-
$2,583 AUD
View
Retailer 7
-
$2,678 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,678 AUD
View
B+
Retailer 9
-
$2,750 AUD
View
B+
Retailer 10
-
$2,801 AUD
View
B+
Retailer 11
-
$3,086 AUD
View
Retailer 12
-
$3,086 AUD
View
Price last confirmed 28 days ago
Retailer 13
-
$3,086 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$3,090 AUD
View
B+
Retailer 15
-
$3,191 AUD
View
B
Retailer 16
-
$3,456 AUD
View
B+
Retailer 17
-
$3,607 AUD
View
B+
Retailer 18
-
$3,746 AUD
View
B
Retailer 19
-
$5,164 AUD
View
Most Expensive
B
NZ Jewellers
968c877d-6101-4c10-8795-2a9be30a4d4a · Nov 5
$6,180 AUD
$4,326 USD
View
19 more retailers have this diamond
Prices start from $2,378 AUDSave up to $3,801 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
$2,378 AUD