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Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 7551808281

Certificate GIA 7551808281

Diamond specifications and retailer prices

From $15,630 AUD
$10,954 USD
As of November 1, 2026
Save $12,447 AUD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $28,077 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551808281. Listed at 13 retailers as of October 30, 2026, with prices from $15,630 to $28,077, a $12,447 spread on the same certified stone. NZ Jewellers lists it at $28,077. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 7551808281
Dimensions11.03 × 6.13 × 4.00 mm
L/W Ratio1.80
Top View
11.03 mm6.13 mm1.70 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 7551808281
Side View
Table 59.0%CrownGirdlePavilionCuletDepth 65.2%

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 1
Current: $18,847 AUD|Low: $15,630 AUD|High: $26,626 AUD|Avg: $19,777 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$15,630 AUD
Retailer 10$16,595 AUD
Retailer 2$16,846 AUD
Retailer 4$18,227 AUD
Retailer 7$18,331 AUD
Retailer 8$18,531 AUD
Retailer 1$18,847 AUD
Retailer 3$21,220 AUD
Retailer 6$24,749 AUD
Retailer 5$26,309 AUD

38 data points across 10 retailers

13 retailers$15,630 AUD to $28,077 AUD

B+
Cheapest Retailer
-
$15,630 AUD
$10,954 USD
B+
Retailer 2
-
$16,595 AUD
$11,630 USD
View
B+
Retailer 3
-
$16,846 AUD
$11,806 USD
View
B+
Retailer 4
-
$18,227 AUD
£10,058 GBP
View
B
Retailer 5
-
$18,250 AUD
$12,790 USD
View
Retailer 6
-
$18,331 AUD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$18,531 AUD
$12,987 USD
View
B+
Retailer 8
-
$18,847 AUD
£10,400 GBP
View
B
Retailer 9
-
$21,057 AUD
$14,757 USD
View
B
Retailer 10
-
$21,220 AUD
€14,163 EUR
View
B
Retailer 11
-
$24,749 AUD
ZAR 280,200 ZAR
View
B
Retailer 12
-
$26,309 AUD
£14,518 GBP
View
Most Expensive
B
NZ Jewellers
a02cec0a-cb7b-4da6-b633-baf9211396cb · Oct 30
$28,077 AUD
$19,677 USD
View
12 more retailers have this diamond
Prices start from $15,630 AUDSave up to $12,447 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
$15,630 AUD