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Marquise|Natural|GIA

1.71ct D SI2 Marquise Natural Diamond

D/SI2

Diamond specifications and retailer prices

From $20,978 AUD
CA$20,467 CAD
As of October 30, 2026
Save $5,037 AUD (19%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $26,015 AUD at The Diamond Guys · As of October 31, 2026
View at The Diamond Guys

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included) and certified by GIA. Listed at 2 retailers as of October 30, 2026, with prices from $20,978 to $26,015, a $5,037 spread on the same certified stone. The Diamond Guys lists it at $26,015. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.71
Carat
D
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions13.42 × 5.89 × 3.67 mm
L/W Ratio2.28
Top View
13.42 mm5.89 mm1.71 ctD / SI2
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: MediumPavilionCuletDepth 62.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $20,978 AUD|Low: $20,978 AUD|High: $26,015 AUD|Avg: $24,336 AUD
Retailer 1
The Diamond Guys
September 4, 2026
Retailer 1$20,978 AUD
The Diamond Guys$26,015 AUD

2 data points across 2 retailers

2 retailers$20,978 AUD to $26,015 AUD

B
Cheapest Retailer
-
$20,978 AUD
CA$20,467 CAD
Most Expensive
C
The Diamond Guys
1966666145 · Oct 31
$26,015 AUD
$18,274 USD
View
1 more retailer has this diamond
Prices start from $20,978 AUDSave up to $5,037 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
1.71ct Marquise
$20,978 AUD