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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566304544

Certificate GIA 2566304544

Diamond specifications and retailer prices

From HK$15,918 HKD
As of November 6, 2026
Save HK$22,981 HKD (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$38,898 HKD at MOH London · As of November 4, 2026
View at MOH London

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 2566304544. Listed at 12 retailers as of November 4, 2026, with prices from HK$15,918 to HK$38,898, a HK$22,981 spread on the same certified stone. MOH London lists it at HK$38,898. 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 angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566304544
Dimensions6.73 × 6.78 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity
Top View
6.73 mm6.78 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566304544
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.9%

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$38,898 HKD|Low: HK$15,918 HKD|High: HK$39,217 HKD|Avg: HK$24,491 HKD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5HK$15,918 HKD
Retailer 4HK$18,010 HKD
Retailer 3HK$19,147 HKD
Retailer 6HK$20,456 HKD
Retailer 10HK$21,827 HKD
Retailer 7HK$22,478 HKD
Retailer 2HK$22,486 HKD
Retailer 8HK$24,931 HKD
Retailer 9HK$27,172 HKD
MOH LondonHK$38,898 HKD

28 data points across 10 retailers

12 retailersHK$15,918 HKD to HK$38,898 HKD

A
Cheapest Retailer
-
HK$15,918 HKD
A
Retailer 2
-
HK$18,010 HKD
View
A
Retailer 3
-
HK$19,147 HKD
View
A
Retailer 4
-
HK$20,456 HKD
View
B+
Retailer 5
-
HK$21,827 HKD
View
B+
Retailer 6
-
HK$22,478 HKD
View
A
Retailer 7
-
HK$22,486 HKD
View
B+
Retailer 8
-
HK$22,650 HKD
View
B+
Retailer 9
-
HK$24,931 HKD
View
Retailer 10
-
HK$24,939 HKD
View
Price last confirmed 31 days ago
B+
Retailer 11
-
HK$27,172 HKD
View
Most Expensive
B
MOH London
299C4EEEE · Nov 4
HK$38,898 HKD
£3,908 GBP
View
11 more retailers have this diamond
Prices start from HK$15,918 HKDSave up to HK$22,981 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$15,918 HKD