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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7551203000

Certificate GIA 7551203000

Diamond specifications and retailer prices

From HK$4,720 HKD
As of November 1, 2026
Save HK$6,749 HKD (59%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$20,556 HKD at NZ Jewellers · As of September 20, 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 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 7551203000. Listed at 21 retailers as of November 1, 2026, with a 143% 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

0.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551203000
Dimensions8.14 × 4.24 × 2.50 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Knot
Top View
8.14 mm4.24 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551203000
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.9%

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$7,472 HKD|Low: HK$4,480 HKD|High: HK$16,196 HKD|Avg: HK$8,316 HKD|-42.4%
Retailer 1
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
November 2, 2026
Retailer 13HK$4,720 HKD
Retailer 8HK$4,749 HKD
Retailer 12HK$5,586 HKD
Retailer 14HK$5,782 HKD
Retailer 2HK$6,355 HKD
Retailer 5HK$6,619 HKD
Retailer 4HK$7,305 HKD
Retailer 1HK$7,472 HKD
Retailer 15HK$7,571 HKD
Retailer 3HK$8,444 HKD
Retailer 10HK$8,864 HKD
Retailer 6HK$9,419 HKD
Retailer 11HK$9,669 HKD
Retailer 9HK$11,469 HKD
Retailer 7HK$15,345 HKD

33 data points across 15 retailers

21 retailersHK$4,720 HKD to HK$11,469 HKD

A
Cheapest Retailer
-
HK$4,720 HKD
A
Retailer 2
-
HK$4,749 HKD
₹57,642 INR
View
A
Retailer 3
-
HK$5,586 HKD
$712 USD
View
A
Retailer 4
-
HK$5,782 HKD
$737 USD
View
Final sale: no returns
A
Retailer 5
-
HK$5,922 HKD
A$1,161 AUD
View
Retailer 6
-
HK$6,151 HKD
$784 USD
View
Price last confirmed 46 days ago
Retailer 7
-
HK$6,261 HKD
$798 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
HK$6,355 HKD
$810 USD
View
Retailer 9
-
HK$6,551 HKD
$835 USD
View
Price last confirmed 41 days ago
B+
Retailer 10
-
HK$6,619 HKD
SGD 1,140 SGD
View
B+
Retailer 11
-
HK$7,305 HKD
$931 USD
View
B+
Retailer 12
-
HK$7,472 HKD
£750 GBP
View
Retailer 13
-
HK$7,563 HKD
$964 USD
View
Price last confirmed 41 days ago
B+
Retailer 14
-
HK$7,571 HKD
$965 USD
View
B+
Retailer 15
-
HK$8,444 HKD
$1,076 USD
View
B+
Retailer 16
-
HK$8,863 HKD
A$1,738 AUD
View
B+
Retailer 17
-
HK$8,864 HKD
€1,076 EUR
View
Retailer 18
-
HK$9,419 HKD
A$1,847 AUD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
HK$9,669 HKD
ZAR 19,909 ZAR
View
B
Retailer 20
-
HK$11,469 HKD
£1,151 GBP
View
Most Expensive
NZ Jewellers
4132ea8f-779b-4abd-90d9-002858131449 · Sep 20
HK$20,556 HKD
$2,620 USD
View
Price under review
20 more retailers have this diamond
Prices start from HK$4,720 HKDSave up to HK$6,749 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$4,720 HKD