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Marquise|Natural|GIA

0.90ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6551992390

Certificate GIA 6551992390

Diamond specifications and retailer prices

From HK$10,043 HKD
As of November 1, 2026
Save HK$13,404 HKD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$32,640 HKD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded J 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 6551992390. Listed at 19 retailers as of November 1, 2026, with a 133% 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

0.90
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551992390
Dimensions9.74 × 5.07 × 3.12 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
9.74 mm5.07 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551992390
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.6%

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 1
Current: HK$10,456 HKD|Low: HK$10,043 HKD|High: HK$23,825 HKD|Avg: HK$15,884 HKD|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6HK$10,043 HKD
Retailer 1HK$10,456 HKD
Retailer 10HK$12,342 HKD
Retailer 9HK$12,413 HKD
Retailer 2HK$13,946 HKD
Retailer 11HK$14,454 HKD
Retailer 4HK$14,871 HKD
Retailer 3HK$17,534 HKD
Retailer 8HK$18,273 HKD
Retailer 7HK$19,736 HKD
Retailer 5HK$23,447 HKD

33 data points across 11 retailers

19 retailersHK$10,043 HKD to HK$23,447 HKD

A
Cheapest Retailer
-
HK$10,043 HKD
A
Retailer 2
-
HK$10,456 HKD
₹126,923 INR
View
B+
Retailer 3
-
HK$12,342 HKD
$1,573 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$12,413 HKD
SGD 2,138 SGD
View
B+
Retailer 5
-
HK$12,648 HKD
$1,612 USD
View
B+
Retailer 6
-
HK$12,671 HKD
$1,615 USD
View
B+
Retailer 7
-
HK$12,868 HKD
$1,640 USD
View
Retailer 8
-
HK$13,378 HKD
$1,705 USD
View
Price last confirmed 15 days ago
Retailer 9
-
HK$13,378 HKD
$1,705 USD
View
Price last confirmed 17 days ago
B
Retailer 10
-
HK$13,946 HKD
SGD 2,402 SGD
View
Retailer 11
-
HK$13,997 HKD
$1,784 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
HK$14,454 HKD
$1,842 USD
View
B+
Retailer 13
-
HK$14,871 HKD
£1,492 GBP
View
Retailer 14
-
HK$15,441 HKD
$1,968 USD
View
Price last confirmed 14 days ago
Retailer 15
-
HK$17,534 HKD
A$3,438 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
HK$18,273 HKD
€2,218 EUR
View
B
Retailer 17
-
HK$19,736 HKD
ZAR 40,636 ZAR
View
B
Retailer 18
-
HK$23,447 HKD
£2,353 GBP
View
Most Expensive
NZ Jewellers
5e747eff-1b15-4ef9-ac3c-25cc03d9706c · Oct 17
HK$32,640 HKD
$4,160 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from HK$10,043 HKDSave up to HK$13,404 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
0.90ct Marquise
HK$10,043 HKD