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Marquise|Natural|IGI

1.71ct F SI2 Marquise Natural Diamond

VG • F/SI2 • IGI 813641942

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 813641942

Diamond specifications and retailer prices

From £3,631 GBP
SGD 6,585 SGD
As of October 31, 2026
Save £1,509 GBP (29%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £7,485 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.71ct natural marquise diamond

This 1.71ct 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 813641942. Listed at 6 retailers as of October 31, 2026, with a 42% 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

1.71
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle42°
OriginNatural
Grading LabIGI
CertificateIGI 813641942
Dimensions11.80 × 6.07 × 3.96 mm
L/W Ratio1.94
Girdle conditionFaceted
Top View
11.80 mm6.07 mm1.71 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 813641942
Side View
Table 59.0%Crown 40.6°Girdle: MED-STKPavilion 42°Culet: NoneDepth 65.2%

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: Oct 31
Current: £5,141 GBP|Low: £3,631 GBP|High: £8,165 GBP|Avg: £5,237 GBP|-7.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Wholesale Diamonds Direct
November 2, 2026
Retailer 4£3,631 GBP
Retailer 3£4,281 GBP
Retailer 2£4,366 GBP
Retailer 5£5,091 GBP
Retailer 1£5,141 GBP
Wholesale Diamonds Direct£7,485 GBP

26 data points across 6 retailers

6 retailers£3,631 GBP to £5,141 GBP

A
Cheapest Retailer
-
£3,631 GBP
SGD 6,585 SGD
A
Retailer 2
-
£4,281 GBP
$5,745 USD
View
A
Retailer 3
-
£4,366 GBP
$5,859 USD
View
A
Retailer 4
-
£5,091 GBP
$6,832 USD
View
A
Retailer 5
-
£5,141 GBP
€6,570 EUR
View
Most Expensive
B+
Wholesale Diamonds Direct
612778872 · Oct 27
£7,485 GBP
$10,045 USD
View
Price last confirmed 7 days ago
5 more retailers have this diamond
Prices start from £3,631 GBPSave up to £1,509 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
1.71ct Marquise
£3,631 GBP