CaratHunter
Plans
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 £3,853 GBP
As of November 2, 2026
Save £2,661 GBP (41%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £6,949 GBP 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: £4,090 GBP|Low: £3,710 GBP|High: £6,697 GBP|Avg: £4,582 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5£3,710 GBP
Retailer 2£3,853 GBP
Retailer 4£4,024 GBP
Retailer 1£4,090 GBP
Retailer 3£6,514 GBP

27 data points across 5 retailers

5 retailers£3,853 GBP to £6,514 GBP

A
Cheapest Retailer
-
£3,853 GBP
A
Retailer 2
-
£4,090 GBP
$5,488 USD
View
Retailer 3
-
£4,154 GBP
$5,575 USD
View
Price last confirmed 38 days ago
B+
Retailer 4
-
£6,514 GBP
View
Most Expensive
NZ Jewellers
7ac75533-5499-4e80-9173-8fd0fd67e2b6 · Sep 27
£6,949 GBP
$9,325 USD
View
Price last confirmed 36 days ago
4 more retailers have this diamond
Prices start from £3,853 GBPSave up to £2,661 GBP

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
£3,853 GBP