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Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2557721221

Certificate GIA 2557721221

Diamond specifications and retailer prices

From HK$17,054 HKD
As of November 6, 2026
Save HK$20,589 HKD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$42,432 HKD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557721221. Listed at 15 retailers as of November 6, 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557721221
Dimensions10.19 × 5.54 × 3.46 mm
L/W Ratio1.84
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural, Needle, Knot, Natural, Extra Facet
Top View
10.19 mm5.54 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557721221
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: Very SmallDepth 62.4%

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$37,643 HKD|Low: HK$16,850 HKD|High: HK$40,339 HKD|Avg: HK$23,996 HKD|-6.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7HK$17,054 HKD
Retailer 4HK$17,642 HKD
Retailer 2HK$20,887 HKD
Retailer 6HK$20,934 HKD
Retailer 10HK$23,685 HKD
Retailer 8HK$23,739 HKD
Retailer 3HK$23,951 HKD
Retailer 9HK$24,609 HKD
Retailer 5HK$26,342 HKD
Retailer 1HK$37,643 HKD

35 data points across 10 retailers

15 retailersHK$17,054 HKD to HK$37,643 HKD

A
Cheapest Retailer
-
HK$17,054 HKD
A
Retailer 2
-
HK$17,642 HKD
View
B+
Retailer 3
-
HK$20,887 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$20,934 HKD
View
B+
Retailer 5
-
HK$22,227 HKD
View
B+
Retailer 6
-
HK$23,685 HKD
View
B+
Retailer 7
-
HK$23,739 HKD
View
Retailer 8
-
HK$23,834 HKD
View
Price last confirmed 26 days ago
B+
Retailer 9
-
HK$23,951 HKD
View
Retailer 10
-
HK$24,351 HKD
View
Price last confirmed 42 days ago
B
Retailer 11
-
HK$24,609 HKD
View
B+
Retailer 12
-
HK$26,342 HKD
View
Retailer 13
-
HK$28,105 HKD
View
Price last confirmed 39 days ago
B
Retailer 14
-
HK$37,643 HKD
View
Most Expensive
NZ Jewellers
b32b4b42-4344-4635-bb13-caf0ed669bc1 · Sep 28
HK$42,432 HKD
$5,414 USD
View
Price last confirmed 40 days ago
14 more retailers have this diamond
Prices start from HK$17,054 HKDSave up to HK$20,589 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 Marquise
HK$17,054 HKD