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Round|Natural|GIA

1.30ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2528810151

Certificate GIA 2528810151

Diamond specifications and retailer prices

From HK$20,986 HKD
As of November 4, 2026
Save HK$24,924 HKD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$47,958 HKD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2528810151. Listed at 18 retailers as of November 4, 2026, with a 119% 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

1.30
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528810151
Dimensions6.97 × 7.00 × 4.31 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.97 mm7.00 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 2528810151
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.4°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 4
Current: HK$29,176 HKD|Low: HK$20,986 HKD|High: HK$47,063 HKD|Avg: HK$28,987 HKD
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 10HK$20,986 HKD
Retailer 7HK$21,919 HKD
Retailer 8HK$24,453 HKD
Retailer 2HK$25,411 HKD
Retailer 6HK$26,321 HKD
Retailer 11HK$27,529 HKD
Retailer 4HK$28,313 HKD
Retailer 1HK$29,176 HKD
Retailer 3HK$29,788 HKD
Retailer 5HK$31,977 HKD
Retailer 9HK$45,910 HKD

30 data points across 11 retailers

18 retailersHK$20,986 HKD to HK$45,910 HKD

A
Cheapest Retailer
-
HK$20,986 HKD
A
Retailer 2
-
HK$21,919 HKD
View
A
Retailer 3
-
HK$24,453 HKD
View
A
Retailer 4
-
HK$25,010 HKD
View
A
Retailer 5
-
HK$25,411 HKD
View
Final sale: no returns
A
Retailer 6
-
HK$25,740 HKD
View
A
Retailer 7
-
HK$25,771 HKD
View
A
Retailer 8
-
HK$26,321 HKD
View
Retailer 9
-
HK$27,529 HKD
View
Price last confirmed 17 days ago
Retailer 10
-
HK$27,529 HKD
View
Price last confirmed 21 days ago
A
Retailer 11
-
HK$28,313 HKD
View
Retailer 12
-
HK$28,588 HKD
View
Price last confirmed 22 days ago
A
Retailer 13
-
HK$29,176 HKD
View
Retailer 14
-
HK$29,788 HKD
View
Price last confirmed 29 days ago
Retailer 15
-
HK$31,765 HKD
View
Price last confirmed 19 days ago
A
Retailer 16
-
HK$31,977 HKD
View
B
Retailer 17
-
HK$45,910 HKD
View
Most Expensive
NZ Jewellers
850537c0-77a6-497c-ab10-3d486638b5d1 · Oct 17
HK$47,958 HKD
$6,113 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from HK$20,986 HKDSave up to HK$24,924 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
1.30ct Round
HK$20,986 HKD