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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 1559987010

Certificate GIA 1559987010

Diamond specifications and retailer prices

From $2,548 AUD
As of November 6, 2026
Save $5,341 AUD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,890 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559987010. Listed at 14 retailers as of November 5, 2026, with prices from $2,548 to $7,890, a $5,341 spread on the same certified stone. NZ Jewellers lists it at $7,890. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559987010
Dimensions6.41 × 6.39 × 4.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
6.41 mm6.39 mm1.00 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559987010
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: $7,890 AUD|Low: $2,548 AUD|High: $7,890 AUD|Avg: $4,297 AUD
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
November 6, 2026
Retailer 7$2,548 AUD
Retailer 6$3,090 AUD
Retailer 8$3,093 AUD
Retailer 2$3,579 AUD
Retailer 9$3,624 AUD
Retailer 10$3,695 AUD
Retailer 3$3,774 AUD
Retailer 5$3,774 AUD
Retailer 13$3,842 AUD
Retailer 12$3,947 AUD
Retailer 11$3,983 AUD
Retailer 4$6,621 AUD
NZ Jewellers$7,890 AUD

27 data points across 13 retailers

14 retailers$2,548 AUD to $7,890 AUD

A
Cheapest Retailer
-
$2,548 AUD
A
Retailer 2
-
$3,090 AUD
View
A
Retailer 3
-
$3,093 AUD
View
A
Retailer 4
-
$3,579 AUD
View
A
Retailer 5
-
$3,624 AUD
View
A
Retailer 6
-
$3,647 AUD
View
A
Retailer 7
-
$3,695 AUD
View
A
Retailer 8
-
$3,774 AUD
View
Retailer 9
-
$3,774 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,842 AUD
View
A
Retailer 11
-
$3,947 AUD
View
A
Retailer 12
-
$3,983 AUD
View
Retailer 13
-
$6,621 AUD
View
Price last confirmed 11 days ago
Most Expensive
B
NZ Jewellers
6264d278-0ac1-4cc1-ba5e-a9c4b8e8aaaa · Nov 5
$7,890 AUD
$5,421 USD
View
13 more retailers have this diamond
Prices start from $2,548 AUDSave up to $5,341 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
$2,548 AUD