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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 1223

Certificate GIA 1223

Diamond specifications and retailer prices

From HK$10,214 HKD
As of November 4, 2026
Save HK$16,655 HKD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$26,870 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 16 retailers as of November 4, 2026, with prices from HK$10,214 to HK$26,870, a HK$16,655 spread on the same certified stone. NZ Jewellers lists it at HK$26,870. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1223
Dimensions6.44 × 6.48 × 3.92 mm
L/W Ratio1.01
Top View
6.44 mm6.48 mm1.00 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1223
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.8%

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 4
Current: HK$26,870 HKD|Low: HK$10,214 HKD|High: HK$28,376 HKD|Avg: HK$14,631 HKD|-5.3%
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
November 6, 2026
Retailer 8HK$10,214 HKD
Retailer 2HK$10,395 HKD
Retailer 11HK$11,015 HKD
Retailer 4HK$11,328 HKD
Retailer 12HK$11,525 HKD
Retailer 3HK$11,783 HKD
Retailer 10HK$12,074 HKD
Retailer 13HK$12,709 HKD
Retailer 7HK$14,223 HKD
Retailer 14HK$14,922 HKD
Retailer 6HK$15,337 HKD
Retailer 5HK$17,793 HKD
Retailer 9HK$20,123 HKD
NZ JewellersHK$26,870 HKD

32 data points across 14 retailers

16 retailersHK$10,214 HKD to HK$26,870 HKD

A
Cheapest Retailer
-
HK$10,214 HKD
A
Retailer 2
-
HK$10,395 HKD
View
A
Retailer 3
-
HK$11,015 HKD
View
Retailer 4
-
HK$11,328 HKD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$11,525 HKD
View
A
Retailer 6
-
HK$11,783 HKD
View
A
Retailer 7
-
HK$11,823 HKD
View
A
Retailer 8
-
HK$12,074 HKD
View
A
Retailer 9
-
HK$12,709 HKD
View
A
Retailer 10
-
HK$14,223 HKD
View
A
Retailer 11
-
HK$14,631 HKD
View
Retailer 12
-
HK$14,922 HKD
View
Price last confirmed 16 days ago
Retailer 13
-
HK$15,337 HKD
View
Price last confirmed 33 days ago
Retailer 14
-
HK$17,793 HKD
View
Price last confirmed 15 days ago
B+
Retailer 15
-
HK$20,123 HKD
View
Most Expensive
B+
NZ Jewellers
688d6296-1ba7-4585-9024-79ef1b351d01 · Nov 5
HK$26,870 HKD
$3,425 USD
View
15 more retailers have this diamond
Prices start from HK$10,214 HKDSave up to HK$16,655 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$10,214 HKD