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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 2554975138

Certificate GIA 2554975138

Diamond specifications and retailer prices

From HK$12,050 HKD
As of November 1, 2026
Save HK$16,428 HKD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$33,985 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2554975138. Listed at 20 retailers as of November 1, 2026, with a 136% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle33.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554975138
Dimensions6.33 × 6.37 × 3.92 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.33 mm6.37 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554975138
Side View
Table 54.0%Crown 33.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 61.7%

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 1
Current: HK$33,985 HKD|Low: HK$11,548 HKD|High: HK$38,151 HKD|Avg: HK$17,843 HKD|+1.0%
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 19HK$12,050 HKD
Retailer 14HK$12,317 HKD
Retailer 16HK$14,278 HKD
Retailer 7HK$14,984 HKD
Retailer 5HK$15,008 HKD
Retailer 6HK$15,494 HKD
Retailer 4HK$15,526 HKD
Retailer 10HK$15,643 HKD
Retailer 3HK$15,659 HKD
Retailer 12HK$16,130 HKD
Retailer 18HK$16,255 HKD
Retailer 11HK$16,365 HKD
Retailer 13HK$17,730 HKD
Retailer 20HK$17,754 HKD
Retailer 8HK$18,044 HKD
Retailer 9HK$19,040 HKD
Retailer 15HK$19,825 HKD
Retailer 2HK$20,688 HKD
Retailer 17HK$28,478 HKD
NZ JewellersHK$33,985 HKD

23 data points across 20 retailers

20 retailersHK$12,050 HKD to HK$28,478 HKD

A
Cheapest Retailer
-
HK$12,050 HKD
A
Retailer 2
-
HK$12,317 HKD
View
B+
Retailer 3
-
HK$14,278 HKD
View
Retailer 4
-
HK$14,984 HKD
View
Price last confirmed 6 days ago
B+
Retailer 5
-
HK$15,494 HKD
View
B+
Retailer 6
-
HK$15,526 HKD
View
Retailer 7
-
HK$15,643 HKD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
HK$15,659 HKD
View
Retailer 9
-
HK$16,130 HKD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
HK$16,255 HKD
View
Retailer 11
-
HK$16,365 HKD
View
Price last confirmed 8 days ago
B
Retailer 12
-
HK$17,730 HKD
View
B
Retailer 13
-
HK$17,754 HKD
View
Retailer 14
-
HK$18,044 HKD
View
Price last confirmed 10 days ago
Retailer 15
-
HK$19,040 HKD
View
Price last confirmed 11 days ago
B
Retailer 16
-
HK$19,825 HKD
View
Retailer 17
-
HK$19,935 HKD
View
Price last confirmed 37 days ago
B
Retailer 18
-
HK$20,688 HKD
View
B
Retailer 19
-
HK$28,478 HKD
View
Most Expensive
NZ Jewellers
a148374b-b900-4dbc-83f0-c2e03d05ae8b · Oct 30
HK$33,985 HKD
$4,332 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from HK$12,050 HKDSave up to HK$16,428 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$12,050 HKD