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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 $895 NZD
As of November 6, 2026
Save $2,190 NZD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,661 NZD 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: $3,661 NZD|Low: $848 NZD|High: $3,661 NZD|Avg: $1,618 NZD
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$895 NZD
Retailer 6$1,403 NZD
Retailer 7$1,620 NZD
Retailer 8$1,782 NZD
Retailer 4$1,784 NZD
Retailer 10$1,845 NZD
Retailer 13$1,999 NZD
Retailer 3$2,166 NZD
Retailer 14$2,246 NZD
Retailer 5$2,307 NZD
Retailer 11$2,453 NZD
Retailer 12$2,560 NZD
Retailer 9$3,085 NZD
MOH London$3,661 NZD

42 data points across 14 retailers

15 retailers$895 NZD to $3,085 NZD

A
Cheapest Retailer
-
$895 NZD
A
Retailer 2
-
$1,082 NZD
View
B+
Retailer 3
-
$1,403 NZD
View
B+
Retailer 4
-
$1,620 NZD
View
B
Retailer 5
-
$1,782 NZD
View
B
Retailer 6
-
$1,784 NZD
View
B
Retailer 7
-
$1,845 NZD
View
Final sale: no returns
B
Retailer 8
-
$1,999 NZD
View
B
Retailer 9
-
$2,166 NZD
View
B
Retailer 10
-
$2,246 NZD
View
B
Retailer 11
-
$2,307 NZD
View
B
Retailer 12
-
$2,453 NZD
View
B
Retailer 13
-
$2,560 NZD
View
C
Retailer 14
-
$3,085 NZD
View
Most Expensive
MOH London
14E2BB29A · Nov 2
$3,661 NZD
£1,598 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $895 NZDSave up to $2,190 NZD

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
$895 NZD