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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2126181975

Certificate GIA 2126181975

Diamond specifications and retailer prices

From HK$20,500 HKD
As of November 5, 2026
Save HK$11,791 HKD (37%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$53,238 HKD at NZ Jewellers · As of October 27, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2126181975. Listed at 18 retailers as of November 5, 2026, with a 58% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2126181975
Dimensions7.38 × 7.35 × 4.59 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Feather, Indented Natural
Top View
7.38 mm7.35 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2126181975
Side View
Table 57.0%Crown 35°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.3%

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$28,855 HKD|Low: HK$20,500 HKD|High: HK$51,716 HKD|Avg: HK$32,812 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 5HK$20,500 HKD
Retailer 8HK$20,782 HKD
Retailer 6HK$25,034 HKD
Retailer 2HK$27,458 HKD
Retailer 1HK$28,855 HKD
Retailer 4HK$30,486 HKD
Retailer 3HK$31,734 HKD
Retailer 7HK$32,291 HKD
Retailer 9HK$33,554 HKD
Retailer 10HK$37,202 HKD
Retailer 11HK$51,166 HKD

46 data points across 11 retailers

18 retailersHK$20,500 HKD to HK$32,291 HKD

A
Cheapest Retailer
-
HK$20,500 HKD
A
Retailer 2
-
HK$20,782 HKD
View
A
Retailer 3
-
HK$25,034 HKD
View
Retailer 4
-
HK$26,093 HKD
View
Price last confirmed 11 days ago
Retailer 5
-
HK$26,886 HKD
View
Price last confirmed 11 days ago
Retailer 6
-
HK$27,458 HKD
View
Price last confirmed 12 days ago
A
Retailer 7
-
HK$28,855 HKD
View
Retailer 8
-
HK$29,184 HKD
View
Price last confirmed 9 days ago
A
Retailer 9
-
HK$30,486 HKD
View
Retailer 10
-
HK$30,557 HKD
View
Price last confirmed 12 days ago
Retailer 11
-
HK$30,557 HKD
View
Price last confirmed 11 days ago
Retailer 12
-
HK$31,702 HKD
View
Price last confirmed 12 days ago
Retailer 13
-
HK$31,734 HKD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
HK$32,291 HKD
View
Retailer 15
-
HK$35,256 HKD
View
Price last confirmed 10 days ago
Retailer 16
-
HK$37,202 HKD
View
Price last confirmed 10 days ago
Retailer 17
-
HK$51,166 HKD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
92d25131-44ca-4437-a4f5-9e38d931f1c8 · Oct 27
HK$53,238 HKD
$6,786 USD
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from HK$20,500 HKDSave up to HK$11,791 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$20,500 HKD