Round|Natural|GIA

1.28ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2247034235

Certificate GIA 2247034235

Diamond specifications and retailer prices

From HK$27,791 HKD
As of November 5, 2026
Save HK$12,038 HKD (30%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$65,873 HKD at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2247034235. Listed at 20 retailers as of November 5, 2026, with a 43% 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

1.28
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2247034235
Dimensions6.92 × 6.88 × 4.35 mm
L/W Ratio1.01
Top View
6.92 mm6.88 mm1.28 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2247034235
Side View
Table 57.0%CrownGirdle: Sli. ThickPavilionCulet: NoneDepth 63.2%

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 5
Current: HK$39,830 HKD|Low: HK$26,545 HKD|High: HK$60,944 HKD|Avg: HK$36,639 HKD|+12.3%
Retailer 1
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
November 7, 2026
Retailer 9HK$27,791 HKD
Retailer 16HK$28,983 HKD
Retailer 11HK$29,312 HKD
Retailer 7HK$30,135 HKD
Retailer 15HK$31,577 HKD
Retailer 5HK$32,486 HKD
Retailer 6HK$34,061 HKD
Retailer 13HK$35,080 HKD
Retailer 8HK$36,287 HKD
Retailer 12HK$36,287 HKD
Retailer 17HK$37,541 HKD
Retailer 2HK$38,309 HKD
Retailer 10HK$38,905 HKD
Retailer 1HK$39,830 HKD
Retailer 4HK$41,742 HKD
Retailer 3HK$45,590 HKD
Retailer 14HK$60,779 HKD

39 data points across 17 retailers

20 retailersHK$27,791 HKD to HK$39,830 HKD

A
Cheapest Retailer
-
HK$27,791 HKD
B+
Retailer 2
-
HK$29,312 HKD
View
B+
Retailer 3
-
HK$29,469 HKD
View
B+
Retailer 4
-
HK$30,644 HKD
View
B+
Retailer 5
-
HK$31,577 HKD
View
Retailer 6
-
HK$34,257 HKD
View
Price last confirmed 30 days ago
Retailer 7
-
HK$34,257 HKD
View
Price last confirmed 30 days ago
Retailer 8
-
HK$34,257 HKD
View
Price last confirmed 39 days ago
B+
Retailer 9
-
HK$35,080 HKD
View
B
Retailer 10
-
HK$36,287 HKD
View
B
Retailer 11
-
HK$36,287 HKD
View
B
Retailer 12
-
HK$37,541 HKD
View
Retailer 13
-
HK$38,309 HKD
View
Price last confirmed 34 days ago
B
Retailer 14
-
HK$38,905 HKD
View
Retailer 15
-
HK$39,524 HKD
View
Price last confirmed 39 days ago
B+
Retailer 16
-
HK$39,830 HKD
View
Retailer 17
-
HK$41,742 HKD
View
Price last confirmed 30 days ago
Retailer 18
-
HK$45,590 HKD
View
Price last confirmed 38 days ago
Retailer 19
-
HK$60,779 HKD
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
55f578f1-354a-4ea5-8be4-20ec29b3a72f · Sep 27
HK$65,873 HKD
$8,405 USD
View
Price last confirmed 40 days ago
19 more retailers have this diamond
Prices start from HK$27,791 HKDSave up to HK$12,038 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
1.28ct Round
HK$27,791 HKD