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Marquise|Natural|GIA

0.90ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2557985642

Certificate GIA 2557985642

Diamond specifications and retailer prices

From HK$15,181 HKD
$1,935 USD
As of October 30, 2026
Save HK$12,341 HKD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$27,523 HKD at Riddles Jewelry · As of November 2, 2026
View at Riddles Jewelry

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded H 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 2557985642. Listed at 9 retailers as of October 30, 2026, with prices from HK$15,181 to HK$27,523, a HK$12,341 spread on the same certified stone. Riddles Jewelry lists it at HK$27,523. 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

0.90
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557985642
Dimensions9.63 × 5.07 × 3.14 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
9.63 mm5.07 mm0.90 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557985642
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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: Oct 30
Current: HK$27,119 HKD|Low: HK$15,181 HKD|High: HK$27,523 HKD|Avg: HK$18,873 HKD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Riddles Jewelry
November 2, 2026
Retailer 7HK$15,181 HKD
Retailer 8HK$18,132 HKD
Retailer 3HK$18,806 HKD
Retailer 6HK$18,987 HKD
Retailer 5HK$19,912 HKD
Retailer 2HK$24,568 HKD
Retailer 4HK$26,903 HKD
Retailer 1HK$27,119 HKD
Riddles JewelryHK$27,523 HKD

32 data points across 9 retailers

9 retailersHK$15,181 HKD to HK$27,523 HKD

B+
Cheapest Retailer
-
HK$15,181 HKD
$1,935 USD
B+
Retailer 2
-
HK$18,132 HKD
SGD 3,123 SGD
View
B
Retailer 3
-
HK$18,806 HKD
$2,397 USD
View
B+
Retailer 4
-
HK$18,987 HKD
$2,420 USD
View
B
Retailer 5
-
HK$19,912 HKD
$2,538 USD
View
B
Retailer 6
-
HK$24,212 HKD
$3,086 USD
View
B
Retailer 7
-
HK$24,568 HKD
£2,466 GBP
View
B
Retailer 8
-
HK$27,119 HKD
€3,292 EUR
View
Most Expensive
B
Riddles Jewelry
1997151045 · Nov 2
HK$27,523 HKD
$3,508 USD
View
8 more retailers have this diamond
Prices start from HK$15,181 HKDSave up to HK$12,341 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+
0.90ct Marquise
HK$15,181 HKD