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Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 6551531952

Certificate GIA 6551531952

Diamond specifications and retailer prices

From $817 NZD
As of November 6, 2026
Save $621 NZD (43%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,438 NZD at Diamond Heaven · As of November 6, 2026
View at Diamond Heaven

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551531952. Listed at 4 retailers as of November 6, 2026, with prices from $817 to $1,438, a $621 spread on the same certified stone. Diamond Heaven lists it at $1,438. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551531952
Dimensions8.21 × 4.02 × 2.58 mm
L/W Ratio2.04
Girdle conditionSlightly Thick to Very Thick
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
8.21 mm4.02 mm0.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6551531952
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,438 NZD|Low: $817 NZD|High: $1,626 NZD|Avg: $1,260 NZD|-6.5%
Diamond Heaven
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2$817 NZD
Retailer 4$1,310 NZD
Retailer 3$1,398 NZD
Diamond Heaven$1,438 NZD

45 data points across 4 retailers

4 retailers$817 NZD to $1,438 NZD

A
Cheapest Retailer
-
$817 NZD
B+
Retailer 2
-
$1,310 NZD
View
B+
Retailer 3
-
$1,398 NZD
View
Most Expensive
B+
Diamond Heaven
0.5SI2G6552CE0CN · Nov 6
$1,438 NZD
£628 GBP
View
3 more retailers have this diamond
Prices start from $817 NZDSave up to $621 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
$817 NZD