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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2557450247

Certificate GIA 2557450247

Diamond specifications and retailer prices

From HK$4,122 HKD
As of November 6, 2026
Save HK$12,845 HKD (76%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: HK$18,449 HKD at NZ Jewellers · As of October 30, 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 2557450247. Listed at 27 retailers as of November 5, 2026, with a 312% 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557450247
Dimensions5.19 × 5.23 × 3.29 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud
Top View
5.19 mm5.23 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557450247
Side View
Table 56.0%Crown 36.5°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 63.1%

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$6,952 HKD|Low: HK$4,122 HKD|High: HK$10,902 HKD|Avg: HK$7,072 HKD|+4.8%
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 9HK$4,122 HKD
Retailer 6HK$5,251 HKD
Retailer 11HK$5,533 HKD
Retailer 3HK$5,721 HKD
Retailer 2HK$6,223 HKD
Retailer 8HK$6,740 HKD
Retailer 1HK$6,952 HKD
Retailer 4HK$7,571 HKD
Retailer 10HK$8,841 HKD
Retailer 5HK$9,076 HKD
Retailer 7HK$10,753 HKD

44 data points across 11 retailers

27 retailersHK$4,122 HKD to HK$16,968 HKD

A
Cheapest Retailer
-
HK$4,122 HKD
Final sale: no returns
Retailer 2
-
HK$5,228 HKD
View
Price last confirmed 26 days ago
A
Retailer 3
-
HK$5,251 HKD
View
Retailer 4
-
HK$5,329 HKD
View
Price last confirmed 8 days ago
Retailer 5
-
HK$5,329 HKD
View
Price last confirmed 53 days ago
A
Retailer 6
-
HK$5,455 HKD
View
A
Retailer 7
-
HK$5,518 HKD
View
A
Retailer 8
-
HK$5,533 HKD
View
B+
Retailer 9
-
HK$5,721 HKD
View
Retailer 10
-
HK$6,152 HKD
View
Price last confirmed 10 days ago
B+
Retailer 11
-
HK$6,176 HKD
View
B+
Retailer 12
-
HK$6,223 HKD
View
B+
Retailer 13
-
HK$6,544 HKD
View
B+
Retailer 14
-
HK$6,740 HKD
View
B+
Retailer 15
-
HK$6,740 HKD
View
B+
Retailer 16
-
HK$6,740 HKD
View
B+
Retailer 17
-
HK$6,952 HKD
View
B+
Retailer 18
-
HK$6,975 HKD
View
B+
Retailer 19
-
HK$7,069 HKD
View
B+
Retailer 20
-
HK$7,485 HKD
View
B+
Retailer 21
-
HK$7,571 HKD
View
B+
Retailer 22
-
HK$8,229 HKD
View
Retailer 23
-
HK$8,841 HKD
View
Price last confirmed 33 days ago
B
Retailer 24
-
HK$9,076 HKD
View
B
Retailer 25
-
HK$10,753 HKD
View
B
Retailer 26
-
HK$16,968 HKD
View
Most Expensive
NZ Jewellers
9b665b45-e3d4-40e8-97cd-0319aba1d27e · Oct 30
HK$18,449 HKD
$2,354 USD
View
Price last confirmed 7 days ago
26 more retailers have this diamond
Prices start from HK$4,122 HKDSave up to HK$12,845 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$4,122 HKD