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Marquise|Natural|GIA

1.71ct F SI2 Marquise Natural Diamond

ID • F/SI2 • GIA 6555548980

Certificate GIA 6555548980

Diamond specifications and retailer prices

From $17,287 AUD
$12,115 USD
As of October 31, 2026
3 retailers carry this diamond
Most expensive: $17,287 AUD at Blue Nile
View at Blue Nile

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded F 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 6555548980. Listed at 3 retailers as of October 31, 2026. 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

1.71
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555548980
Dimensions11.50 × 6.13 × 4.12 mm
L/W Ratio1.88
Culet sizeNone
Top View
11.50 mm6.13 mm1.71 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555548980
Side View
Table 56.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 67.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $17,287 AUD|Low: $14,335 AUD|High: $18,047 AUD|Avg: $15,729 AUD|-4.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 10, 2026
Retailer 3$14,395 AUD
Retailer 4$15,596 AUD
Retailer 2$15,769 AUD
Retailer 5$16,324 AUD
Blue Nile$17,287 AUD

4 data points across 5 retailers

3 retailers

Retailer 1
-
$14,395 AUD
$10,088 USD
Price last confirmed 10 days ago
Retailer 2
-
$15,596 AUD
$10,930 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Blue Nile
29743327 · Oct 31
$17,287 AUD
$12,115 USD
View
2 more retailers have this diamond

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
$17,287 AUD