Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6555767334

Certificate GIA 6555767334

Diamond specifications and retailer prices

From $640 USD
HK$5,000 HKD
As of November 1, 2026
Save $934 USD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,693 USD 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 F 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 6555767334. Listed at 20 retailers as of November 1, 2026, with a 146% 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 6555767334
Dimensions8.92 × 4.18 × 2.37 mm
L/W Ratio2.13
Key to symbols
Feather
Top View
8.92 mm4.18 mm0.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555767334
Side View
Table 59.0%Crown 32.2°Girdle: STK-VTKPavilion 37.5°Culet: NoneDepth 56.6%

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: $2,693 USD|Low: $614 USD|High: $2,693 USD|Avg: $1,076 USD|+6.7%
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
Retailer 18
November 2, 2026
Retailer 3$640 USD
Retailer 10$766 USD
Retailer 4$792 USD
Retailer 16$859 USD
Retailer 18$859 USD
Retailer 9$870 USD
Retailer 8$890 USD
Retailer 17$892 USD
Retailer 5$951 USD
Retailer 15$991 USD
Retailer 7$992 USD
Retailer 6$1,020 USD
Retailer 12$1,026 USD
Retailer 11$1,054 USD
Retailer 13$1,212 USD
Retailer 14$1,326 USD
Retailer 2$1,574 USD
NZ Jewellers$2,693 USD

24 data points across 18 retailers

20 retailers$640 USD to $1,574 USD

A
Cheapest Retailer
-
$640 USD
HK$5,000 HKD
Retailer 2
-
$766 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
$792 USD
View
Final sale: no returns
B+
Retailer 4
-
$850 USD
View
B+
Retailer 5
-
$859 USD
View
B+
Retailer 6
-
$859 USD
View
B+
Retailer 7
-
$870 USD
View
B+
Retailer 8
-
$890 USD
SGD 1,203 SGD
View
B+
Retailer 9
-
$892 USD
View
B+
Retailer 10
-
$951 USD
View
B+
Retailer 11
-
$991 USD
View
B+
Retailer 12
-
$992 USD
View
B+
Retailer 13
-
$1,020 USD
View
B+
Retailer 14
-
$1,026 USD
£808 GBP
View
B+
Retailer 15
-
$1,054 USD
£830 GBP
View
B
Retailer 16
-
$1,212 USD
€1,154 EUR
View
Retailer 17
-
$1,291 USD
A$1,987 AUD
View
Price last confirmed 28 days ago
B
Retailer 18
-
$1,326 USD
ZAR 21,417 ZAR
View
B
Retailer 19
-
$1,574 USD
£1,239 GBP
View
Most Expensive
NZ Jewellers
0404b563-645a-408c-9631-26567cf1751a · Oct 30
$2,693 USD
View
Price under review
19 more retailers have this diamond
Prices start from $640 USDSave up to $934 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
$640 USD