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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2454893009

Certificate GIA 2454893009

Diamond specifications and retailer prices

From HK$4,467 HKD
As of November 6, 2026
Save HK$11,952 HKD (73%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$18,998 HKD at NZ Jewellers · As of September 15, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2454893009. Listed at 24 retailers as of November 5, 2026, with a 268% 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

0.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2454893009
Dimensions5.21 × 5.17 × 3.26 mm
L/W Ratio1.01
Star length50%
Top View
5.21 mm5.17 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2454893009
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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$4,467 HKD|Low: HK$4,467 HKD|High: HK$11,223 HKD|Avg: HK$7,450 HKD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1HK$4,467 HKD
Retailer 2HK$5,588 HKD
Retailer 8HK$5,956 HKD
Retailer 10HK$6,058 HKD
Retailer 5HK$7,171 HKD
Retailer 6HK$7,312 HKD
Retailer 11HK$7,406 HKD
Retailer 4HK$7,822 HKD
Retailer 3HK$9,107 HKD
Retailer 7HK$9,350 HKD
Retailer 9HK$11,074 HKD

36 data points across 11 retailers

24 retailersHK$4,467 HKD to HK$16,419 HKD

A
Cheapest Retailer
-
HK$4,467 HKD
Retailer 2
-
HK$5,408 HKD
View
Price last confirmed 26 days ago
A
Retailer 3
-
HK$5,588 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$5,659 HKD
View
B+
Retailer 5
-
HK$5,956 HKD
View
Retailer 6
-
HK$6,058 HKD
View
Price last confirmed 53 days ago
Retailer 7
-
HK$6,058 HKD
View
Price last confirmed 8 days ago
Retailer 8
-
HK$6,058 HKD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
HK$6,152 HKD
View
B+
Retailer 10
-
HK$6,293 HKD
View
Retailer 11
-
HK$6,293 HKD
View
Price last confirmed 22 days ago
Retailer 12
-
HK$6,293 HKD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
HK$6,732 HKD
View
Retailer 14
-
HK$6,991 HKD
View
Price last confirmed 53 days ago
B+
Retailer 15
-
HK$7,093 HKD
View
B+
Retailer 16
-
HK$7,171 HKD
View
B+
Retailer 17
-
HK$7,312 HKD
View
B
Retailer 18
-
HK$7,406 HKD
View
B+
Retailer 19
-
HK$7,822 HKD
View
Retailer 20
-
HK$9,107 HKD
View
Price last confirmed 33 days ago
B
Retailer 21
-
HK$9,350 HKD
View
B
Retailer 22
-
HK$11,074 HKD
View
B
Retailer 23
-
HK$16,419 HKD
View
Most Expensive
NZ Jewellers
9f00f750-bed9-4676-a1ce-8fb98a8617b8 · Sep 15
HK$18,998 HKD
$2,424 USD
View
Price under review
23 more retailers have this diamond
Prices start from HK$4,467 HKDSave up to HK$11,952 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
0.55ct Round
HK$4,467 HKD