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Round|Natural|GIA

1.02ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1428908142

Certificate GIA 1428908142

Diamond specifications and retailer prices

From $3,637 AUD
As of November 6, 2026
Save $6,087 AUD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,724 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1428908142. Listed at 19 retailers as of November 5, 2026, with prices from $3,637 to $9,724, a $6,087 spread on the same certified stone. Diamond Quarter lists it at $9,724. 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

1.02
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1428908142
Dimensions6.44 × 6.40 × 4.00 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot
Top View
6.44 mm6.40 mm1.02 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1428908142
Side View
Table 58.0%Crown 34.5°Girdle: THN-STKPavilion 41.4°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: $3,637 AUD|Low: $3,637 AUD|High: $8,515 AUD|Avg: $5,380 AUD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$3,637 AUD
Retailer 8$3,693 AUD
Retailer 9$4,644 AUD
Retailer 2$4,814 AUD
Retailer 3$5,143 AUD
Retailer 4$5,174 AUD
Retailer 7$5,355 AUD
Retailer 5$6,141 AUD
Retailer 6$8,392 AUD

29 data points across 9 retailers

19 retailers$3,637 AUD to $9,724 AUD

A
Cheapest Retailer
-
$3,637 AUD
B+
Retailer 2
-
$3,693 AUD
View
B+
Retailer 3
-
$4,383 AUD
View
B
Retailer 4
-
$4,644 AUD
View
Final sale: no returns
Retailer 5
-
$4,704 AUD
View
Price last confirmed 109 days ago
B+
Retailer 6
-
$4,814 AUD
View
B+
Retailer 7
-
$4,843 AUD
View
B+
Retailer 8
-
$5,031 AUD
View
B
Retailer 9
-
$5,143 AUD
View
B+
Retailer 10
-
$5,174 AUD
View
B
Retailer 11
-
$5,238 AUD
View
B+
Retailer 12
-
$5,355 AUD
View
Retailer 13
-
$5,374 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$5,805 AUD
View
B
Retailer 15
-
$6,141 AUD
View
B
Retailer 16
-
$6,527 AUD
View
B
Retailer 17
-
$8,392 AUD
View
B
Retailer 18
-
$8,765 AUD
View
Most Expensive
B
Diamond Quarter
1.02SI1H1442F009N · Nov 5
$9,724 AUD
£5,360 GBP
View
18 more retailers have this diamond
Prices start from $3,637 AUDSave up to $6,087 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
1.02ct Round
$3,637 AUD