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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6551379543

Certificate GIA 6551379543

Diamond specifications and retailer prices

From HK$20,586 HKD
As of November 6, 2026
Save HK$24,924 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$49,568 HKD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551379543. Listed at 21 retailers as of November 4, 2026, with a 121% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551379543
Dimensions6.72 × 6.76 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.72 mm6.76 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551379543
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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$49,568 HKD|Low: HK$20,586 HKD|High: HK$49,767 HKD|Avg: HK$31,549 HKD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9HK$20,586 HKD
Retailer 2HK$21,355 HKD
Retailer 7HK$23,998 HKD
Retailer 3HK$26,109 HKD
Retailer 5HK$28,062 HKD
Retailer 4HK$28,611 HKD
Retailer 6HK$31,695 HKD
Retailer 8HK$45,510 HKD
QueensmithHK$49,568 HKD

27 data points across 9 retailers

21 retailersHK$20,586 HKD to HK$45,510 HKD

A
Cheapest Retailer
-
HK$20,586 HKD
A
Retailer 2
-
HK$21,355 HKD
View
A
Retailer 3
-
HK$23,998 HKD
View
A
Retailer 4
-
HK$25,183 HKD
View
Final sale: no returns
A
Retailer 5
-
HK$25,254 HKD
View
A
Retailer 6
-
HK$26,109 HKD
View
Retailer 7
-
HK$27,293 HKD
View
Price last confirmed 43 days ago
Retailer 8
-
HK$27,293 HKD
View
Price last confirmed 21 days ago
Retailer 9
-
HK$27,293 HKD
View
Price last confirmed 17 days ago
A
Retailer 10
-
HK$28,062 HKD
View
Retailer 11
-
HK$28,337 HKD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
HK$28,423 HKD
View
B+
Retailer 13
-
HK$28,611 HKD
View
Retailer 14
-
HK$31,491 HKD
View
Price last confirmed 70 days ago
Retailer 15
-
HK$31,491 HKD
View
Price last confirmed 19 days ago
Retailer 16
-
HK$31,491 HKD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
HK$31,695 HKD
View
B
Retailer 18
-
HK$45,510 HKD
View
Retailer 19
-
HK$47,542 HKD
View
Price last confirmed 20 days ago
Retailer 20
-
HK$47,542 HKD
View
Price last confirmed 42 days ago
Most Expensive
Queensmith
6551379543 · Oct 28
HK$49,568 HKD
£4,975 GBP
View
Price last confirmed 8 days ago
20 more retailers have this diamond
Prices start from HK$20,586 HKDSave up to HK$24,924 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$20,586 HKD