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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 $3,252 SGD
As of November 6, 2026
Save $5,443 SGD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,695 SGD 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 $3,252 to $8,695, a $5,443 spread on the same certified stone. Diamond Quarter lists it at $8,695. 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: $3,252 SGD|Low: $3,252 SGD|High: $7,614 SGD|Avg: $4,810 SGD|-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$3,252 SGD
Retailer 8$3,302 SGD
Retailer 9$4,153 SGD
Retailer 2$4,305 SGD
Retailer 3$4,598 SGD
Retailer 4$4,626 SGD
Retailer 7$4,789 SGD
Retailer 5$5,491 SGD
Retailer 6$7,504 SGD

29 data points across 9 retailers

19 retailers$3,252 SGD to $8,695 SGD

A
Cheapest Retailer
-
$3,252 SGD
B+
Retailer 2
-
$3,302 SGD
View
B+
Retailer 3
-
$3,919 SGD
View
B
Retailer 4
-
$4,153 SGD
View
Final sale: no returns
Retailer 5
-
$4,206 SGD
View
Price last confirmed 109 days ago
B+
Retailer 6
-
$4,305 SGD
View
B+
Retailer 7
-
$4,330 SGD
View
B+
Retailer 8
-
$4,499 SGD
View
B
Retailer 9
-
$4,598 SGD
View
B+
Retailer 10
-
$4,626 SGD
View
B
Retailer 11
-
$4,684 SGD
View
B+
Retailer 12
-
$4,789 SGD
View
Retailer 13
-
$4,805 SGD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$5,191 SGD
View
B
Retailer 15
-
$5,491 SGD
View
B
Retailer 16
-
$5,836 SGD
View
B
Retailer 17
-
$7,504 SGD
View
B
Retailer 18
-
$7,838 SGD
View
Most Expensive
B
Diamond Quarter
1.02SI1H1442F009N · Nov 5
$8,695 SGD
£5,360 GBP
View
18 more retailers have this diamond
Prices start from $3,252 SGDSave up to $5,443 SGD

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
$3,252 SGD