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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6555094150

Certificate GIA 6555094150

Diamond specifications and retailer prices

From $636 SGD
As of November 6, 2026
Save $1,556 SGD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,601 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I 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 6555094150. Listed at 15 retailers as of November 5, 2026, with a 245% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555094150
Dimensions7.74 × 4.17 × 2.63 mm
L/W Ratio1.86
Top View
7.74 mm4.17 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555094150
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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 6
Current: $2,601 SGD|Low: $602 SGD|High: $2,601 SGD|Avg: $1,149 SGD
MOH London
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
November 6, 2026
Retailer 2$636 SGD
Retailer 6$997 SGD
Retailer 7$1,151 SGD
Retailer 8$1,266 SGD
Retailer 4$1,268 SGD
Retailer 10$1,311 SGD
Retailer 13$1,420 SGD
Retailer 3$1,539 SGD
Retailer 14$1,596 SGD
Retailer 5$1,639 SGD
Retailer 11$1,743 SGD
Retailer 12$1,819 SGD
Retailer 9$2,192 SGD
MOH London$2,601 SGD

42 data points across 14 retailers

15 retailers$636 SGD to $2,192 SGD

A
Cheapest Retailer
-
$636 SGD
A
Retailer 2
-
$769 SGD
View
B+
Retailer 3
-
$997 SGD
View
B+
Retailer 4
-
$1,151 SGD
View
B
Retailer 5
-
$1,266 SGD
View
B
Retailer 6
-
$1,268 SGD
View
B
Retailer 7
-
$1,311 SGD
View
Final sale: no returns
B
Retailer 8
-
$1,420 SGD
View
B
Retailer 9
-
$1,539 SGD
View
B
Retailer 10
-
$1,596 SGD
View
B
Retailer 11
-
$1,639 SGD
View
B
Retailer 12
-
$1,743 SGD
View
B
Retailer 13
-
$1,819 SGD
View
C
Retailer 14
-
$2,192 SGD
View
Most Expensive
MOH London
14E2BB29A · Nov 2
$2,601 SGD
£1,598 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $636 SGDSave up to $1,556 SGD

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
$636 SGD