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Marquise|Natural|GIA

0.45ct D SI2 Marquise Natural Diamond

ID • D/SI2 • GIA T

Certificate GIA T

Diamond specifications and retailer prices

From $1,230 AUD
As of November 7, 2026
Save $115 AUD (9%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,345 AUD at B2C Jewels · As of November 6, 2026
View at B2C Jewels

About this 0.45ct natural marquise diamond

This 0.45ct natural marquise sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of November 6, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.45
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA T
Dimensions7.52 × 4.16 mm
L/W Ratio1.81
Top View
7.52 mm4.16 mm0.45 ctD / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA T
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 7
Current: $1,345 AUD|Low: $1,230 AUD|High: $1,345 AUD|Avg: $1,272 AUD|+1.5%
B2C Jewels
Retailer 2
September 23, 2026
Retailer 2$1,230 AUD
B2C Jewels$1,345 AUD

3 data points across 2 retailers

2 retailers$1,230 AUD to $1,345 AUD

B
Cheapest Retailer
-
$1,230 AUD
Most Expensive
B
B2C Jewels
8164360 · Nov 6
$1,345 AUD
$924 USD
View
1 more retailer has this diamond
Prices start from $1,230 AUDSave up to $115 AUD

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.

B
0.45ct Marquise
$1,230 AUD