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Marquise|Natural|IGI

1.70ct F SI2 Marquise Natural Diamond

VG • F/SI2 • IGI 782657386

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 782657386

Diamond specifications and retailer prices

From $7,379 AUD
£4,072 GBP
As of November 2, 2026
Save $5,094 AUD (41%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $13,306 AUD at NZ Jewellers · As of September 27, 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 very-good cut grade and certified by IGI 782657386. Listed at 5 retailers as of November 2, 2026, with a 69% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 782657386
Dimensions10.91 × 6.14 × 4.16 mm
L/W Ratio1.78
Girdle conditionFaceted
Culet sizePointed
Top View
10.91 mm6.14 mm1.70 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 782657386
Side View
Table 61.0%Crown 39.6°Girdle: THK-VTKPavilion 41.7°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $7,831 AUD|Low: $7,103 AUD|High: $12,823 AUD|Avg: $8,773 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$7,103 AUD
Retailer 2$7,379 AUD
Retailer 4$7,705 AUD
Retailer 1$7,831 AUD
Retailer 3$12,473 AUD

27 data points across 5 retailers

5 retailers$7,379 AUD to $12,473 AUD

A
Cheapest Retailer
-
$7,379 AUD
£4,072 GBP
A
Retailer 2
-
$7,831 AUD
$5,488 USD
View
Retailer 3
-
$7,955 AUD
$5,575 USD
View
Price last confirmed 38 days ago
B+
Retailer 4
-
$12,473 AUD
£6,883 GBP
View
Most Expensive
NZ Jewellers
7ac75533-5499-4e80-9173-8fd0fd67e2b6 · Sep 27
$13,306 AUD
$9,325 USD
View
Price last confirmed 36 days ago
4 more retailers have this diamond
Prices start from $7,379 AUDSave up to $5,094 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.

A
1.70ct Marquise
$7,379 AUD