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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1558301284

Certificate GIA 1558301284

Diamond specifications and retailer prices

From HK$22,688 HKD
As of November 4, 2026
Save HK$27,544 HKD (55%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$52,327 HKD at NZ Jewellers · As of September 21, 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 1558301284. Listed at 24 retailers as of November 2, 2026, with a 121% 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
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558301284
Dimensions6.31 × 6.37 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.31 mm6.37 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558301284
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.0%

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 4
Current: HK$26,430 HKD|Low: HK$22,688 HKD|High: HK$50,766 HKD|Avg: HK$33,021 HKD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9HK$22,688 HKD
Retailer 6HK$23,693 HKD
Retailer 1HK$26,430 HKD
Retailer 2HK$27,027 HKD
Retailer 11HK$27,725 HKD
Retailer 5HK$30,526 HKD
Retailer 3HK$32,205 HKD
Retailer 4HK$35,013 HKD
Retailer 8HK$36,920 HKD
Retailer 10HK$45,777 HKD
Retailer 7HK$50,233 HKD

33 data points across 11 retailers

24 retailersHK$22,688 HKD to HK$50,233 HKD

A
Cheapest Retailer
-
HK$22,688 HKD
A
Retailer 2
-
HK$23,693 HKD
View
B+
Retailer 3
-
HK$26,430 HKD
View
Retailer 4
-
HK$26,925 HKD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
HK$27,027 HKD
View
B+
Retailer 6
-
HK$27,568 HKD
View
B+
Retailer 7
-
HK$27,576 HKD
View
B+
Retailer 8
-
HK$27,725 HKD
View
Final sale: no returns
Retailer 9
-
HK$28,572 HKD
View
Price last confirmed 11 days ago
Retailer 10
-
HK$30,039 HKD
View
Price last confirmed 29 days ago
Retailer 11
-
HK$30,039 HKD
View
Price last confirmed 44 days ago
B+
Retailer 12
-
HK$30,126 HKD
View
B+
Retailer 13
-
HK$30,526 HKD
View
B+
Retailer 14
-
HK$31,185 HKD
View
Retailer 15
-
HK$31,193 HKD
View
Price last confirmed 38 days ago
Retailer 16
-
HK$32,205 HKD
View
Price last confirmed 33 days ago
Retailer 17
-
HK$34,660 HKD
View
Price last confirmed 38 days ago
Retailer 18
-
HK$34,660 HKD
View
Price last confirmed 45 days ago
B+
Retailer 19
-
HK$35,013 HKD
View
B+
Retailer 20
-
HK$36,920 HKD
View
Retailer 21
-
HK$45,777 HKD
View
Price last confirmed 9 days ago
B
Retailer 22
-
HK$50,233 HKD
View
Retailer 23
-
HK$52,327 HKD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
2a98d147-13bb-42ca-b8ab-d57a36d34597 · Sep 21
HK$52,327 HKD
$6,670 USD
View
Price last confirmed 45 days ago
23 more retailers have this diamond
Prices start from HK$22,688 HKDSave up to HK$27,544 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$22,688 HKD