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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2557770796

Certificate GIA 2557770796

Diamond specifications and retailer prices

From HK$18,857 HKD
As of November 6, 2026
Save HK$23,763 HKD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$42,620 HKD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557770796. Listed at 24 retailers as of November 5, 2026, with prices from HK$18,857 to HK$42,620, a HK$23,763 spread on the same certified stone. NZ Jewellers lists it at HK$42,620. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557770796
Dimensions6.72 × 6.75 × 4.22 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.72 mm6.75 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557770796
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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$42,620 HKD|Low: HK$18,755 HKD|High: HK$42,620 HKD|Avg: HK$26,909 HKD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 7, 2026
Retailer 3HK$18,857 HKD
Retailer 18HK$18,857 HKD
Retailer 9HK$21,083 HKD
Retailer 11HK$21,216 HKD
Retailer 22HK$21,600 HKD
Retailer 8HK$21,906 HKD
Retailer 12HK$22,572 HKD
Retailer 24HK$22,917 HKD
Retailer 10HK$23,787 HKD
Retailer 5HK$24,461 HKD
Retailer 7HK$24,461 HKD
Retailer 2HK$25,150 HKD
Retailer 6HK$25,401 HKD
Retailer 4HK$25,581 HKD
Retailer 19HK$26,287 HKD
Retailer 13HK$27,674 HKD
Retailer 20HK$28,113 HKD
Retailer 14HK$28,222 HKD
Retailer 17HK$29,257 HKD
Retailer 21HK$29,853 HKD
Retailer 16HK$35,566 HKD
Retailer 15HK$36,554 HKD
Retailer 23HK$40,794 HKD
NZ JewellersHK$42,620 HKD

26 data points across 24 retailers

24 retailersHK$18,857 HKD to HK$42,620 HKD

A
Cheapest Retailer
-
HK$18,857 HKD
A
Retailer 2
-
HK$18,857 HKD
View
A
Retailer 3
-
HK$21,083 HKD
View
A
Retailer 4
-
HK$21,216 HKD
View
A
Retailer 5
-
HK$21,600 HKD
View
A
Retailer 6
-
HK$21,906 HKD
View
A
Retailer 7
-
HK$22,572 HKD
View
Final sale: no returns
A
Retailer 8
-
HK$22,917 HKD
View
B+
Retailer 9
-
HK$23,787 HKD
View
Retailer 10
-
HK$24,461 HKD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
HK$24,461 HKD
View
B+
Retailer 12
-
HK$25,150 HKD
View
B+
Retailer 13
-
HK$25,401 HKD
View
B+
Retailer 14
-
HK$25,581 HKD
View
B+
Retailer 15
-
HK$26,287 HKD
View
Retailer 16
-
HK$27,172 HKD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
HK$27,674 HKD
View
B+
Retailer 18
-
HK$28,113 HKD
View
B+
Retailer 19
-
HK$28,222 HKD
View
B+
Retailer 20
-
HK$29,853 HKD
View
B
Retailer 21
-
HK$35,566 HKD
View
B
Retailer 22
-
HK$36,554 HKD
View
B
Retailer 23
-
HK$40,794 HKD
View
Most Expensive
B
NZ Jewellers
2083813b-8946-41b4-958e-caac659d28fe · Nov 5
HK$42,620 HKD
$5,438 USD
View
23 more retailers have this diamond
Prices start from HK$18,857 HKDSave up to HK$23,763 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$18,857 HKD