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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 $4,593 NZD
As of November 6, 2026
Save $7,686 NZD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,279 NZD 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 $4,593 to $12,279, a $7,686 spread on the same certified stone. Diamond Quarter lists it at $12,279. 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: $4,593 NZD|Low: $4,593 NZD|High: $10,753 NZD|Avg: $6,793 NZD|-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$4,593 NZD
Retailer 8$4,663 NZD
Retailer 9$5,864 NZD
Retailer 2$6,079 NZD
Retailer 3$6,494 NZD
Retailer 4$6,534 NZD
Retailer 7$6,763 NZD
Retailer 5$7,755 NZD
Retailer 6$10,598 NZD

29 data points across 9 retailers

19 retailers$4,593 NZD to $12,279 NZD

A
Cheapest Retailer
-
$4,593 NZD
B+
Retailer 2
-
$4,663 NZD
View
B+
Retailer 3
-
$5,534 NZD
View
B
Retailer 4
-
$5,864 NZD
View
Final sale: no returns
Retailer 5
-
$5,940 NZD
View
Price last confirmed 109 days ago
B+
Retailer 6
-
$6,079 NZD
View
B+
Retailer 7
-
$6,115 NZD
View
B+
Retailer 8
-
$6,353 NZD
View
B
Retailer 9
-
$6,494 NZD
View
B+
Retailer 10
-
$6,534 NZD
View
B
Retailer 11
-
$6,615 NZD
View
B+
Retailer 12
-
$6,763 NZD
View
Retailer 13
-
$6,786 NZD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$7,331 NZD
View
B
Retailer 15
-
$7,755 NZD
View
B
Retailer 16
-
$8,242 NZD
View
B
Retailer 17
-
$10,598 NZD
View
B
Retailer 18
-
$11,069 NZD
View
Most Expensive
B
Diamond Quarter
1.02SI1H1442F009N · Nov 5
$12,279 NZD
£5,360 GBP
View
18 more retailers have this diamond
Prices start from $4,593 NZDSave up to $7,686 NZD

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
$4,593 NZD