Round|Natural|IGI

1.33ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 685580930

Shape and cutting style on the report: Round brilliant

Certificate IGI 685580930

Diamond specifications and retailer prices

From HK$11,383 HKD
As of November 6, 2026
Save HK$14,106 HKD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$36,111 HKD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.33ct natural round diamond

This 1.33ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 685580930. Listed at 25 retailers as of November 2, 2026, with a 124% 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

1.33
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 685580930
Dimensions6.96 × 6.93 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.96 mm6.93 mm1.33 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 685580930
Side View
Table 58.0%Crown 36.4°Girdle: ThickPavilion 41.1°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$11,383 HKD|Low: HK$11,383 HKD|High: HK$30,306 HKD|Avg: HK$16,837 HKD|-0.8%
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
November 6, 2026
Retailer 1HK$11,383 HKD
Retailer 3HK$12,984 HKD
Retailer 12HK$13,266 HKD
Retailer 13HK$13,494 HKD
Retailer 4HK$14,553 HKD
Retailer 11HK$14,945 HKD
Retailer 2HK$15,078 HKD
Retailer 5HK$15,887 HKD
Retailer 6HK$15,981 HKD
Retailer 7HK$16,883 HKD
Retailer 8HK$17,762 HKD
Retailer 9HK$19,354 HKD
Retailer 10HK$25,489 HKD

26 data points across 13 retailers

25 retailersHK$11,383 HKD to HK$25,489 HKD

A
Cheapest Retailer
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HK$11,383 HKD
Retailer 2
-
HK$12,984 HKD
View
Price last confirmed 12 days ago
A
Retailer 3
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HK$13,266 HKD
View
Retailer 4
-
HK$14,012 HKD
View
Price last confirmed 12 days ago
Retailer 5
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HK$14,553 HKD
View
Price last confirmed 8 days ago
Retailer 6
-
HK$14,553 HKD
View
Price last confirmed 15 days ago
A
Retailer 7
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HK$14,553 HKD
View
Retailer 8
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HK$14,655 HKD
View
Price last confirmed 12 days ago
A
Retailer 9
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HK$14,945 HKD
View
Retailer 10
-
HK$15,078 HKD
View
Price last confirmed 11 days ago
A
Retailer 11
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HK$15,228 HKD
View
A
Retailer 12
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HK$15,981 HKD
View
Retailer 13
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HK$16,546 HKD
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Price last confirmed 29 days ago
Retailer 14
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HK$16,546 HKD
View
Price last confirmed 25 days ago
A
Retailer 15
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HK$16,883 HKD
View
Retailer 16
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HK$17,275 HKD
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Price last confirmed 50 days ago
A
Retailer 17
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HK$17,762 HKD
View
Retailer 18
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HK$19,095 HKD
View
Price last confirmed 33 days ago
A
Retailer 19
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HK$19,354 HKD
View
Retailer 20
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HK$19,935 HKD
View
Price last confirmed 45 days ago
B
Retailer 21
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HK$25,489 HKD
View
Retailer 22
-
HK$34,597 HKD
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Price last confirmed 34 days ago
Retailer 23
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HK$34,597 HKD
View
Price last confirmed 26 days ago
Retailer 24
-
HK$35,500 HKD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
7280adbb-83f0-4888-86d9-acae6ef833e4 · Sep 19
HK$36,111 HKD
$4,603 USD
View
Price last confirmed 47 days ago
24 more retailers have this diamond
Prices start from HK$11,383 HKDSave up to HK$14,106 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
1.33ct Round
HK$11,383 HKD