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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 2557626736

Certificate GIA 2557626736

Diamond specifications and retailer prices

From HK$49,242 HKD
As of November 4, 2026
Save HK$37,377 HKD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$104,237 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557626736. Listed at 15 retailers as of November 4, 2026, with a 76% 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle37.35°
Pavilion angle41.78°
OriginNatural
Grading LabGIA
CertificateGIA 2557626736
Dimensions10.77 × 5.47 × 3.53 mm
L/W Ratio1.97
Girdle conditionThick
Culet sizeNone
Key to symbols
Crystal, Feather, Natural
Top View
10.77 mm5.47 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557626736
Side View
Table 61.0%Crown 37.35°GirdlePavilion 41.78°Culet: NoneDepth 64.6%

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 4
Current: HK$58,185 HKD|Low: HK$58,185 HKD|High: HK$87,904 HKD|Avg: HK$67,736 HKD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 1HK$58,185 HKD
Retailer 6HK$60,097 HKD
Retailer 2HK$60,466 HKD
Retailer 3HK$67,715 HKD
Retailer 4HK$76,031 HKD
Retailer 5HK$86,619 HKD

38 data points across 6 retailers

15 retailersHK$49,242 HKD to HK$86,619 HKD

B+
Cheapest Retailer
-
HK$49,242 HKD
Retailer 2
-
HK$52,119 HKD
View
Price last confirmed 9 days ago
B
Retailer 3
-
HK$52,558 HKD
View
B
Retailer 4
-
HK$56,461 HKD
View
B
Retailer 5
-
HK$57,331 HKD
View
B
Retailer 6
-
HK$58,185 HKD
View
B
Retailer 7
-
HK$59,760 HKD
View
Retailer 8
-
HK$60,097 HKD
View
Price last confirmed 16 days ago
B
Retailer 9
-
HK$60,466 HKD
View
B
Retailer 10
-
HK$65,152 HKD
View
B
Retailer 11
-
HK$67,715 HKD
View
Retailer 12
-
HK$68,656 HKD
View
Price last confirmed 15 days ago
B
Retailer 13
-
HK$76,031 HKD
View
B
Retailer 14
-
HK$86,619 HKD
View
Most Expensive
NZ Jewellers
e598eb48-456e-4347-a78a-4cc5790481a2 · Nov 5
HK$104,237 HKD
$13,300 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$49,242 HKDSave up to HK$37,377 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$49,242 HKD