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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 HK$19,954 HKD
As of November 6, 2026
Save HK$33,395 HKD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$53,349 HKD 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 HK$19,954 to HK$53,349, a HK$33,395 spread on the same certified stone. Diamond Quarter lists it at HK$53,349. 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: HK$19,954 HKD|Low: HK$19,954 HKD|High: HK$46,719 HKD|Avg: HK$29,515 HKD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1HK$19,954 HKD
Retailer 8HK$20,260 HKD
Retailer 9HK$25,479 HKD
Retailer 2HK$26,412 HKD
Retailer 3HK$28,215 HKD
Retailer 4HK$28,387 HKD
Retailer 7HK$29,382 HKD
Retailer 5HK$33,693 HKD
Retailer 6HK$46,045 HKD

29 data points across 9 retailers

19 retailersHK$19,954 HKD to HK$53,349 HKD

A
Cheapest Retailer
-
HK$19,954 HKD
B+
Retailer 2
-
HK$20,260 HKD
View
B+
Retailer 3
-
HK$24,045 HKD
View
B
Retailer 4
-
HK$25,479 HKD
View
Final sale: no returns
Retailer 5
-
HK$25,809 HKD
View
Price last confirmed 109 days ago
B+
Retailer 6
-
HK$26,412 HKD
View
B+
Retailer 7
-
HK$26,569 HKD
View
B+
Retailer 8
-
HK$27,603 HKD
View
B
Retailer 9
-
HK$28,215 HKD
View
B+
Retailer 10
-
HK$28,387 HKD
View
B
Retailer 11
-
HK$28,740 HKD
View
B+
Retailer 12
-
HK$29,382 HKD
View
Retailer 13
-
HK$29,484 HKD
View
Price last confirmed 29 days ago
B
Retailer 14
-
HK$31,851 HKD
View
B
Retailer 15
-
HK$33,693 HKD
View
B
Retailer 16
-
HK$35,809 HKD
View
B
Retailer 17
-
HK$46,045 HKD
View
B
Retailer 18
-
HK$48,090 HKD
View
Most Expensive
B
Diamond Quarter
1.02SI1H1442F009N · Nov 5
HK$53,349 HKD
£5,360 GBP
View
18 more retailers have this diamond
Prices start from HK$19,954 HKDSave up to HK$33,395 HKD

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
HK$19,954 HKD