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Marquise|Natural|GIA

0.50ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6555998638

Certificate GIA 6555998638

Diamond specifications and retailer prices

From HK$4,419 HKD
As of October 31, 2026
Save HK$13,995 HKD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$18,414 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555998638. Listed at 17 retailers as of October 30, 2026, with prices from HK$4,419 to HK$18,414, a HK$13,995 spread on the same certified stone. NZ Jewellers lists it at HK$18,414. 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

0.50
Carat
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555998638
Dimensions8.73 × 4.00 × 2.38 mm
L/W Ratio2.18
Key to symbols
Twinning Wisp, Feather
Top View
8.73 mm4.00 mm0.50 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555998638
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 59.4%

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: Oct 31
Current: HK$18,414 HKD|Low: HK$4,318 HKD|High: HK$18,414 HKD|Avg: HK$7,228 HKD|+3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 2HK$4,419 HKD
Retailer 9HK$5,241 HKD
Retailer 5HK$5,414 HKD
Retailer 14HK$5,876 HKD
Retailer 16HK$5,876 HKD
Retailer 3HK$5,884 HKD
Retailer 4HK$5,963 HKD
Retailer 8HK$6,096 HKD
Retailer 15HK$6,096 HKD
Retailer 6HK$6,724 HKD
Retailer 13HK$6,779 HKD
Retailer 7HK$6,912 HKD
Retailer 12HK$7,036 HKD
Retailer 10HK$7,051 HKD
Retailer 11HK$8,337 HKD
Retailer 17HK$10,771 HKD
NZ JewellersHK$18,414 HKD

29 data points across 17 retailers

17 retailersHK$4,419 HKD to HK$18,414 HKD

A
Cheapest Retailer
-
HK$4,419 HKD
Retailer 2
-
HK$5,241 HKD
$668 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
HK$5,414 HKD
$690 USD
View
Final sale: no returns
A
Retailer 4
-
HK$5,876 HKD
$749 USD
View
A
Retailer 5
-
HK$5,876 HKD
$749 USD
View
Retailer 6
-
HK$5,884 HKD
$750 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
HK$5,963 HKD
$760 USD
View
B+
Retailer 8
-
HK$6,096 HKD
SGD 1,050 SGD
View
A
Retailer 9
-
HK$6,096 HKD
$777 USD
View
B+
Retailer 10
-
HK$6,724 HKD
$857 USD
View
B+
Retailer 11
-
HK$6,779 HKD
$864 USD
View
B+
Retailer 12
-
HK$6,912 HKD
$881 USD
View
B+
Retailer 13
-
HK$7,036 HKD
£706 GBP
View
B+
Retailer 14
-
HK$7,051 HKD
£708 GBP
View
B
Retailer 15
-
HK$8,337 HKD
€1,012 EUR
View
B
Retailer 16
-
HK$10,771 HKD
£1,081 GBP
View
Most Expensive
B
NZ Jewellers
88d87b2f-aadb-4faf-81c0-ee5e9c54b4c5 · Oct 30
HK$18,414 HKD
$2,347 USD
View
16 more retailers have this diamond
Prices start from HK$4,419 HKDSave up to HK$13,995 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
0.50ct Marquise
HK$4,419 HKD