Marquise|Natural|GIA

1.70ct F SI2 Marquise Natural Diamond

ID • F/SI2 • GIA 3555551182

Certificate GIA 3555551182

Diamond specifications and retailer prices

From $15,965 AUD
CA$15,540 CAD
As of November 2, 2026
Save $3,496 AUD (18%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $26,201 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

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 3555551182. Listed at 16 retailers as of November 2, 2026, with a relatively tight 22% 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3555551182
Dimensions12.08 × 6.34 × 3.71 mm
L/W Ratio1.91
Culet sizeNone
Top View
12.08 mm6.34 mm1.70 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3555551182
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.5%

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 2
Current: $26,201 AUD|Low: $14,205 AUD|High: $26,201 AUD|Avg: $18,662 AUD
NZ Jewellers
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
Retailer 17
Retailer 18
October 20, 2026
Retailer 13$14,205 AUD
Retailer 9$14,453 AUD
Retailer 6$14,586 AUD
Retailer 5$15,720 AUD
Retailer 8$15,851 AUD
Retailer 18$15,965 AUD
Retailer 14$17,030 AUD
Retailer 17$17,293 AUD
Retailer 11$17,389 AUD
Retailer 2$17,812 AUD
Retailer 3$18,120 AUD
Retailer 7$19,361 AUD
Retailer 4$19,461 AUD
Retailer 12$19,651 AUD
Retailer 15$19,660 AUD
Retailer 10$20,679 AUD
Retailer 16$24,683 AUD
NZ Jewellers$26,201 AUD

23 data points across 18 retailers

16 retailers$15,965 AUD to $19,461 AUD

Retailer 1
-
$14,205 AUD
$9,955 USD
Price last confirmed 15 days ago
Retailer 2
-
$14,453 AUD
$10,129 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$14,586 AUD
$10,222 USD
View
Price last confirmed 13 days ago
Retailer 4
-
$15,720 AUD
$11,017 USD
View
Price last confirmed 22 days ago
Retailer 5
-
$15,851 AUD
$11,109 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$15,965 AUD
CA$15,540 CAD
View
Retailer 7
-
$17,030 AUD
$11,935 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$17,293 AUD
$12,119 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$17,389 AUD
£9,595 GBP
View
Price last confirmed 14 days ago
B
Retailer 10
-
$18,120 AUD
$12,699 USD
View
Retailer 11
-
$19,361 AUD
$13,568 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$19,461 AUD
$13,639 USD
View
Retailer 13
-
$19,651 AUD
$13,772 USD
View
Price last confirmed 15 days ago
Retailer 14
-
$20,679 AUD
$14,492 USD
View
Price last confirmed 20 days ago
Retailer 15
-
$24,683 AUD
£13,621 GBP
View
Price last confirmed 15 days ago
Most Expensive
NZ Jewellers
d17e5db4-c94f-4f59-b6f4-d6d4ce22d2a8 · Oct 17
$26,201 AUD
$18,362 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from $15,965 AUDSave up to $3,496 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
$15,965 AUD