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1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 642405110

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405110

Diamond specifications and retailer prices

From HK$28,505 HKD
As of November 5, 2026
Save HK$25,542 HKD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$57,291 HKD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 642405110. Listed at 13 retailers as of November 4, 2026, with a 90% 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

1.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 642405110
Dimensions7.37 × 7.42 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.37 mm7.42 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405110
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.2%

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$36,593 HKD|Low: HK$25,291 HKD|High: HK$55,646 HKD|Avg: HK$35,588 HKD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4HK$28,505 HKD
Retailer 7HK$29,132 HKD
Retailer 8HK$30,346 HKD
Retailer 6HK$30,840 HKD
Retailer 2HK$33,231 HKD
Retailer 1HK$36,593 HKD
Retailer 3HK$39,548 HKD
Retailer 5HK$54,047 HKD

30 data points across 8 retailers

13 retailersHK$28,505 HKD to HK$54,047 HKD

A
Cheapest Retailer
-
HK$28,505 HKD
A
Retailer 2
-
HK$29,132 HKD
View
A
Retailer 3
-
HK$30,840 HKD
View
Retailer 4
-
HK$31,232 HKD
View
Price last confirmed 102 days ago
Retailer 5
-
HK$32,886 HKD
View
Price last confirmed 44 days ago
A
Retailer 6
-
HK$33,231 HKD
View
Retailer 7
-
HK$33,842 HKD
View
Price last confirmed 19 days ago
Retailer 8
-
HK$33,842 HKD
View
Price last confirmed 21 days ago
A
Retailer 9
-
HK$36,593 HKD
View
Retailer 10
-
HK$37,941 HKD
View
Price last confirmed 45 days ago
A
Retailer 11
-
HK$39,548 HKD
View
B+
Retailer 12
-
HK$54,047 HKD
View
Most Expensive
NZ Jewellers
a8833919-68e5-4601-bf50-ec555be2abf0 · Sep 19
HK$57,291 HKD
$7,310 USD
View
Price last confirmed 47 days ago
12 more retailers have this diamond
Prices start from HK$28,505 HKDSave up to HK$25,542 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
1.53ct Round
HK$28,505 HKD