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1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 754512199

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512199

Diamond specifications and retailer prices

From HK$16,851 HKD
As of November 6, 2026
Save HK$27,003 HKD (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$43,855 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct 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 IGI 754512199. Listed at 19 retailers as of November 5, 2026, with prices from HK$16,851 to HK$43,855, a HK$27,003 spread on the same certified stone. NZ Jewellers lists it at HK$43,855. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 754512199
Dimensions7.17 × 7.23 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.17 mm7.23 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512199
Side View
Table 56.0%Crown 36.7°Girdle: Slightly ThickPavilion 40.5°Culet: NoneDepth 63.5%

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 6
Current: HK$16,851 HKD|Low: HK$16,851 HKD|High: HK$37,186 HKD|Avg: HK$23,044 HKD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1HK$16,851 HKD
Retailer 9HK$18,044 HKD
Retailer 6HK$19,017 HKD
Retailer 2HK$20,672 HKD
Retailer 10HK$21,308 HKD
Retailer 3HK$22,461 HKD
Retailer 4HK$24,555 HKD
Retailer 5HK$25,599 HKD
Retailer 7HK$25,905 HKD
Retailer 8HK$36,653 HKD

33 data points across 10 retailers

19 retailersHK$16,851 HKD to HK$43,855 HKD

A
Cheapest Retailer
-
HK$16,851 HKD
A
Retailer 2
-
HK$18,044 HKD
View
A
Retailer 3
-
HK$18,781 HKD
View
A
Retailer 4
-
HK$19,017 HKD
View
B+
Retailer 5
-
HK$20,672 HKD
View
Retailer 6
-
HK$20,978 HKD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
HK$20,978 HKD
View
A
Retailer 8
-
HK$21,308 HKD
View
B+
Retailer 9
-
HK$21,347 HKD
View
B+
Retailer 10
-
HK$21,786 HKD
View
B+
Retailer 11
-
HK$22,084 HKD
View
A
Retailer 12
-
HK$22,461 HKD
View
B+
Retailer 13
-
HK$24,202 HKD
View
A
Retailer 14
-
HK$24,555 HKD
View
A
Retailer 15
-
HK$25,599 HKD
View
A
Retailer 16
-
HK$25,905 HKD
View
B+
Retailer 17
-
HK$32,181 HKD
View
B+
Retailer 18
-
HK$36,653 HKD
View
Most Expensive
B
NZ Jewellers
506969c5-90e3-475c-97b0-c094ff3fa585 · Nov 5
HK$43,855 HKD
$5,590 USD
View
18 more retailers have this diamond
Prices start from HK$16,851 HKDSave up to HK$27,003 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
1.51ct Round
HK$16,851 HKD