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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1565306355

Certificate GIA 1565306355

Diamond specifications and retailer prices

From HK$27,635 HKD
As of November 6, 2026
Save HK$36,961 HKD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$64,596 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1565306355. Listed at 20 retailers as of November 5, 2026, with prices from HK$27,635 to HK$64,596, a HK$36,961 spread on the same certified stone. NZ Jewellers lists it at HK$64,596. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1565306355
Dimensions11.23 × 5.42 × 3.04 mm
L/W Ratio2.07
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
11.23 mm5.42 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1565306355
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$58,733 HKD|Low: HK$27,635 HKD|High: HK$59,674 HKD|Avg: HK$38,865 HKD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 5HK$27,635 HKD
Retailer 2HK$34,994 HKD
Retailer 6HK$35,966 HKD
Retailer 4HK$36,507 HKD
Retailer 9HK$37,181 HKD
Retailer 3HK$37,377 HKD
Retailer 11HK$37,463 HKD
Retailer 10HK$39,046 HKD
Retailer 7HK$39,367 HKD
Retailer 8HK$45,237 HKD
Retailer 1HK$58,733 HKD

30 data points across 11 retailers

20 retailersHK$27,635 HKD to HK$64,596 HKD

B+
Cheapest Retailer
-
HK$27,635 HKD
B+
Retailer 2
-
HK$29,508 HKD
View
Final sale: no returns
B
Retailer 3
-
HK$32,337 HKD
View
B+
Retailer 4
-
HK$33,889 HKD
View
B
Retailer 5
-
HK$34,994 HKD
View
B+
Retailer 6
-
HK$35,966 HKD
View
B+
Retailer 7
-
HK$36,507 HKD
View
Retailer 8
-
HK$37,079 HKD
View
Price last confirmed 9 days ago
B
Retailer 9
-
HK$37,079 HKD
View
B
Retailer 10
-
HK$37,079 HKD
View
B
Retailer 11
-
HK$37,181 HKD
View
Retailer 12
-
HK$37,377 HKD
View
Price last confirmed 29 days ago
B
Retailer 13
-
HK$37,463 HKD
View
B
Retailer 14
-
HK$38,584 HKD
View
B
Retailer 15
-
HK$39,046 HKD
View
B
Retailer 16
-
HK$39,367 HKD
View
B
Retailer 17
-
HK$42,784 HKD
View
B
Retailer 18
-
HK$45,237 HKD
View
B
Retailer 19
-
HK$58,733 HKD
View
Most Expensive
B
NZ Jewellers
a8ee4bc2-c613-4e2c-a18c-d585237df2a4 · Nov 5
HK$64,596 HKD
$8,242 USD
View
19 more retailers have this diamond
Prices start from HK$27,635 HKDSave up to HK$36,961 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.

B+
1.20ct Marquise
HK$27,635 HKD