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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2557652255

Certificate GIA 2557652255

Diamond specifications and retailer prices

From HK$23,496 HKD
As of November 6, 2026
Save HK$31,130 HKD (57%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$56,909 HKD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557652255. Listed at 24 retailers as of November 2, 2026, with a 132% 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557652255
Dimensions6.36 × 6.42 × 4.01 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
6.36 mm6.42 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557652255
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

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$23,496 HKD|Low: HK$23,496 HKD|High: HK$55,215 HKD|Avg: HK$34,948 HKD|-5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 1HK$23,496 HKD
Retailer 13HK$23,598 HKD
Retailer 4HK$26,211 HKD
Retailer 3HK$27,741 HKD
Retailer 5HK$29,098 HKD
Retailer 8HK$29,694 HKD
Retailer 2HK$30,047 HKD
Retailer 7HK$30,165 HKD
Retailer 9HK$31,546 HKD
Retailer 14HK$32,675 HKD
Retailer 10HK$34,613 HKD
Retailer 12HK$36,017 HKD
Retailer 11HK$38,481 HKD
Retailer 6HK$54,626 HKD

25 data points across 14 retailers

24 retailersHK$23,496 HKD to HK$54,626 HKD

A
Cheapest Retailer
-
HK$23,496 HKD
A
Retailer 2
-
HK$23,598 HKD
View
B+
Retailer 3
-
HK$26,211 HKD
View
B+
Retailer 4
-
HK$27,741 HKD
View
B+
Retailer 5
-
HK$29,098 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$29,694 HKD
View
B+
Retailer 7
-
HK$30,047 HKD
View
B+
Retailer 8
-
HK$30,165 HKD
View
B+
Retailer 9
-
HK$30,839 HKD
View
Retailer 10
-
HK$31,530 HKD
View
Price last confirmed 43 days ago
Retailer 11
-
HK$31,530 HKD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
HK$31,546 HKD
View
Retailer 13
-
HK$32,667 HKD
View
Price last confirmed 29 days ago
Retailer 14
-
HK$32,667 HKD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
HK$32,675 HKD
View
B+
Retailer 16
-
HK$34,613 HKD
View
Retailer 17
-
HK$35,021 HKD
View
Price last confirmed 33 days ago
B+
Retailer 18
-
HK$36,017 HKD
View
Retailer 19
-
HK$37,688 HKD
View
Price last confirmed 45 days ago
Retailer 20
-
HK$37,688 HKD
View
Price last confirmed 33 days ago
B+
Retailer 21
-
HK$38,481 HKD
View
B
Retailer 22
-
HK$54,626 HKD
View
Retailer 23
-
HK$54,924 HKD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
c622d397-570c-4952-9c80-b0d5219df204 · Oct 3
HK$56,909 HKD
$7,254 USD
View
Price last confirmed 34 days ago
23 more retailers have this diamond
Prices start from HK$23,496 HKDSave up to HK$31,130 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$23,496 HKD