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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 $602 USD
HK$4,700 HKD
As of November 1, 2026
Save $860 USD (59%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,620 USD 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
Color
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: $952 USD|Low: $571 USD|High: $2,064 USD|Avg: $1,060 USD|-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 13$602 USD
Retailer 8$605 USD
Retailer 12$712 USD
Retailer 14$737 USD
Retailer 2$810 USD
Retailer 5$844 USD
Retailer 4$931 USD
Retailer 1$952 USD
Retailer 15$965 USD
Retailer 3$1,076 USD
Retailer 10$1,130 USD
Retailer 6$1,201 USD
Retailer 11$1,232 USD
Retailer 9$1,462 USD
Retailer 7$1,956 USD

33 data points across 15 retailers

21 retailers$602 USD to $1,462 USD

A
Cheapest Retailer
-
$602 USD
HK$4,700 HKD
A
Retailer 2
-
$605 USD
₹57,642 INR
View
A
Retailer 3
-
$712 USD
View
A
Retailer 4
-
$737 USD
View
Final sale: no returns
A
Retailer 5
-
$755 USD
A$1,161 AUD
View
Retailer 6
-
$784 USD
View
Price last confirmed 45 days ago
Retailer 7
-
$798 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
$810 USD
View
Retailer 9
-
$835 USD
View
Price last confirmed 40 days ago
B+
Retailer 10
-
$844 USD
SGD 1,140 SGD
View
B+
Retailer 11
-
$931 USD
View
B+
Retailer 12
-
$952 USD
£750 GBP
View
Retailer 13
-
$964 USD
View
Price last confirmed 41 days ago
B+
Retailer 14
-
$965 USD
View
B+
Retailer 15
-
$1,076 USD
View
B+
Retailer 16
-
$1,130 USD
A$1,738 AUD
View
B+
Retailer 17
-
$1,130 USD
€1,076 EUR
View
Retailer 18
-
$1,201 USD
A$1,847 AUD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
$1,232 USD
ZAR 19,909 ZAR
View
B
Retailer 20
-
$1,462 USD
£1,151 GBP
View
Most Expensive
NZ Jewellers
4132ea8f-779b-4abd-90d9-002858131449 · Sep 20
$2,620 USD
View
Price under review
20 more retailers have this diamond
Prices start from $602 USDSave up to $860 USD

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
$602 USD