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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6545442420

Certificate GIA 6545442420

Diamond specifications and retailer prices

From HK$15,949 HKD
As of November 6, 2026
Save HK$20,636 HKD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$43,780 HKD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545442420. Listed at 18 retailers as of November 4, 2026, with a 129% 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

1.20
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6545442420
Dimensions6.79 × 6.84 × 4.23 mm
L/W Ratio1.01
Top View
6.79 mm6.84 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545442420
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.1%

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$16,490 HKD|Low: HK$15,949 HKD|High: HK$37,126 HKD|Avg: HK$23,751 HKD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8HK$15,949 HKD
Retailer 1HK$16,490 HKD
Retailer 5HK$18,559 HKD
Retailer 3HK$22,031 HKD
Retailer 2HK$22,125 HKD
Retailer 4HK$25,558 HKD
Retailer 6HK$25,973 HKD
Retailer 7HK$36,585 HKD

34 data points across 8 retailers

18 retailersHK$15,949 HKD to HK$36,585 HKD

A
Cheapest Retailer
-
HK$15,949 HKD
A
Retailer 2
-
HK$16,490 HKD
View
B+
Retailer 3
-
HK$18,559 HKD
View
B+
Retailer 4
-
HK$19,468 HKD
View
B+
Retailer 5
-
HK$19,703 HKD
View
B+
Retailer 6
-
HK$19,711 HKD
View
Retailer 7
-
HK$20,942 HKD
View
Price last confirmed 39 days ago
Retailer 8
-
HK$20,942 HKD
View
Price last confirmed 25 days ago
B
Retailer 9
-
HK$21,396 HKD
View
Retailer 10
-
HK$21,749 HKD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
HK$22,031 HKD
View
B
Retailer 12
-
HK$22,039 HKD
View
B
Retailer 13
-
HK$22,125 HKD
View
Retailer 14
-
HK$24,163 HKD
View
Price last confirmed 38 days ago
B
Retailer 15
-
HK$25,558 HKD
View
B
Retailer 16
-
HK$25,973 HKD
View
B
Retailer 17
-
HK$36,585 HKD
View
Most Expensive
NZ Jewellers
fb4b624f-56ed-4d45-9c91-33d05b7f11c1 · Sep 28
HK$43,780 HKD
$5,586 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from HK$15,949 HKDSave up to HK$20,636 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
1.20ct Round
HK$15,949 HKD