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Marquise|Natural|GIA

1.71ct K SI2 Marquise Natural Diamond

ID • K/SI2 • GIA 2558946849

Certificate GIA 2558946849

Diamond specifications and retailer prices

From $10,573 AUD
As of November 6, 2026
Save $806 AUD (7%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $18,804 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558946849. Listed at 7 retailers as of November 6, 2026, with a relatively tight 8% 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558946849
Dimensions11.91 × 6.28 × 3.83 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle
Top View
11.91 mm6.28 mm1.71 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558946849
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,380 AUD|Low: $8,647 AUD|High: $15,857 AUD|Avg: $10,913 AUD|+8.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2$8,647 AUD
Retailer 7$8,855 AUD
Retailer 10$9,179 AUD
Retailer 11$9,288 AUD
Retailer 3$10,070 AUD
Retailer 13$10,378 AUD
Retailer 6$10,573 AUD
Retailer 1$11,380 AUD
Retailer 9$11,412 AUD
Retailer 5$11,480 AUD
Retailer 12$12,192 AUD
Retailer 4$12,972 AUD
Retailer 8$15,816 AUD

28 data points across 13 retailers

7 retailers$10,573 AUD to $11,380 AUD

B+
Cheapest Retailer
-
$10,573 AUD
Retailer 2
-
$11,243 AUD
View
Price last confirmed 36 days ago
B
Retailer 3
-
$11,380 AUD
View
Retailer 4
-
$11,416 AUD
View
Price last confirmed 36 days ago
Retailer 5
-
$12,972 AUD
View
Price last confirmed 38 days ago
Retailer 6
-
$15,816 AUD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
51677e81-00d9-48f7-b1ed-89cde7bf6210 · Sep 30
$18,804 AUD
$12,920 USD
View
Price last confirmed 37 days ago
6 more retailers have this diamond
Prices start from $10,573 AUDSave up to $806 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
$10,573 AUD