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Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6435180932

Certificate GIA 6435180932

Diamond specifications and retailer prices

From HK$20,500 HKD
As of November 6, 2026
Save HK$23,520 HKD (53%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: HK$44,019 HKD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6435180932. Listed at 34 retailers as of November 5, 2026, with a 115% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6435180932
Dimensions6.48 × 6.42 × 3.90 mm
L/W Ratio1.01
Top View
6.48 mm6.42 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6435180932
Side View
Table 62.0%Crown 33°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.4%

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$25,983 HKD|Low: HK$20,790 HKD|High: HK$42,756 HKD|Avg: HK$29,918 HKD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9HK$20,790 HKD
Retailer 3HK$21,127 HKD
Retailer 12HK$22,892 HKD
Retailer 5HK$24,155 HKD
Retailer 2HK$25,960 HKD
Retailer 1HK$25,983 HKD
Retailer 4HK$27,089 HKD
Retailer 6HK$29,341 HKD
Retailer 8HK$29,388 HKD
Retailer 7HK$30,839 HKD
Retailer 11HK$41,846 HKD
Retailer 10HK$42,254 HKD

36 data points across 12 retailers

34 retailersHK$20,500 HKD to HK$44,019 HKD

A
Cheapest Retailer
-
HK$20,500 HKD
A
Retailer 2
-
HK$20,790 HKD
View
A
Retailer 3
-
HK$21,127 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$22,359 HKD
View
Retailer 5
-
HK$22,892 HKD
View
Price last confirmed 50 days ago
Retailer 6
-
HK$22,892 HKD
View
Price last confirmed 28 days ago
Retailer 7
-
HK$22,892 HKD
View
Price last confirmed 8 days ago
Retailer 8
-
HK$22,892 HKD
View
Price last confirmed 21 days ago
Retailer 9
-
HK$22,892 HKD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
HK$23,112 HKD
View
Retailer 11
-
HK$23,771 HKD
View
Price last confirmed 38 days ago
A
Retailer 12
-
HK$24,155 HKD
View
B+
Retailer 13
-
HK$25,026 HKD
View
B+
Retailer 14
-
HK$25,026 HKD
View
B+
Retailer 15
-
HK$25,889 HKD
View
B+
Retailer 16
-
HK$25,960 HKD
View
Retailer 17
-
HK$25,960 HKD
View
Price last confirmed 28 days ago
B+
Retailer 18
-
HK$25,983 HKD
View
Retailer 19
-
HK$26,415 HKD
View
Price last confirmed 28 days ago
Retailer 20
-
HK$26,415 HKD
View
Price last confirmed 45 days ago
Retailer 21
-
HK$26,415 HKD
View
Price last confirmed 16 days ago
B+
Retailer 22
-
HK$26,415 HKD
View
Retailer 23
-
HK$27,089 HKD
View
Price last confirmed 33 days ago
B+
Retailer 24
-
HK$28,141 HKD
View
Retailer 25
-
HK$29,310 HKD
View
Price last confirmed 22 days ago
B+
Retailer 26
-
HK$29,341 HKD
View
B+
Retailer 27
-
HK$29,388 HKD
View
B+
Retailer 28
-
HK$30,839 HKD
View
Retailer 29
-
HK$41,846 HKD
View
Price last confirmed 9 days ago
B
Retailer 30
-
HK$42,254 HKD
View
B
Retailer 31
-
HK$44,019 HKD
View
Retailer 32
-
HK$44,019 HKD
View
Price last confirmed 39 days ago
Retailer 33
-
HK$44,019 HKD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
8b22a2a6-3c47-4f47-b165-e8d03f8bd461 · Oct 20
HK$44,019 HKD
$5,611 USD
View
Price last confirmed 16 days ago
33 more retailers have this diamond
Prices start from HK$20,500 HKDSave up to HK$23,520 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
1.00ct Round
HK$20,500 HKD