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Marquise|Natural|GIA

1.70ct F SI2 Marquise Natural Diamond

ID • F/SI2 • GIA 2554796017

Certificate GIA 2554796017

Diamond specifications and retailer prices

From $17,501 AUD
$12,265 USD
As of October 28, 2026
Save $4,569 AUD (21%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $22,070 AUD at Aurelinne · As of October 27, 2026
View at Aurelinne

About this 1.7ct natural marquise diamond

This 1.7ct 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 2554796017. Listed at 13 retailers as of October 27, 2026, with prices from $17,501 to $22,070, a $4,569 spread on the same certified stone. Aurelinne lists it at $22,070. 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

1.70
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554796017
Dimensions11.74 × 5.99 × 3.71 mm
L/W Ratio1.96
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural
Top View
11.74 mm5.99 mm1.70 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2554796017
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.9%

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: Oct 28
Current: $22,070 AUD|Low: $13,223 AUD|High: $22,070 AUD|Avg: $17,292 AUD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 7$13,223 AUD
Retailer 8$13,369 AUD
Retailer 5$13,744 AUD
Retailer 6$14,502 AUD
Retailer 9$17,501 AUD
Retailer 11$18,149 AUD
Retailer 12$18,202 AUD
Retailer 4$18,485 AUD
Retailer 3$19,406 AUD
Retailer 16$19,406 AUD
Retailer 10$19,617 AUD
Retailer 2$19,780 AUD
Retailer 15$20,048 AUD
Retailer 13$20,925 AUD
Retailer 14$21,252 AUD
Aurelinne$22,070 AUD

11 data points across 16 retailers

13 retailers$17,501 AUD to $22,070 AUD

Retailer 1
-
$13,223 AUD
HK$72,400 HKD
Price last confirmed 62 days ago
B
Retailer 2
-
$17,501 AUD
$12,265 USD
View
B
Retailer 3
-
$18,149 AUD
$12,719 USD
View
B
Retailer 4
-
$18,202 AUD
$12,756 USD
View
B+
Retailer 5
-
$18,485 AUD
$12,955 USD
View
B
Retailer 6
-
$19,406 AUD
$13,600 USD
View
B
Retailer 7
-
$19,406 AUD
$13,600 USD
View
B
Retailer 8
-
$19,617 AUD
$13,748 USD
View
B
Retailer 9
-
$19,780 AUD
€13,202 EUR
View
B
Retailer 10
-
$20,048 AUD
$14,050 USD
View
B
Retailer 11
-
$20,925 AUD
$14,665 USD
View
B
Retailer 12
-
$21,252 AUD
$14,894 USD
View
Most Expensive
B
Aurelinne
0a6d86e3-0ddc-46ae-ba1c-2644c68f390d · Oct 27
$22,070 AUD
$15,467 USD
View
12 more retailers have this diamond
Prices start from $17,501 AUDSave up to $4,569 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+
1.70ct Marquise
$17,501 AUD