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Marquise|Natural|GIA

1.71ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6561042587

Certificate GIA 6561042587

Diamond specifications and retailer prices

From £7,640 GBP
SGD 13,855 SGD
As of October 31, 2026
Save £6,989 GBP (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £14,630 GBP at With Clarity · As of November 1, 2026
View at With Clarity

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561042587. Listed at 13 retailers as of October 31, 2026, with prices from £7,640 to £14,630, a £6,989 spread on the same certified stone. With Clarity lists it at £14,630. 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

1.71
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.56°
Pavilion angle40.98°
OriginNatural
Grading LabGIA
CertificateGIA 6561042587
Dimensions11.84 × 6.24 × 4.01 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.84 mm6.24 mm1.71 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561042587
Side View
Table 57.0%Crown 38.56°Girdle: MED-THKPavilion 40.98°Culet: NoneDepth 64.4%

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: £10,428 GBP|Low: £7,640 GBP|High: £15,699 GBP|Avg: £10,223 GBP|-6.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 2, 2026
Retailer 10£7,640 GBP
Retailer 7£8,162 GBP
Retailer 8£8,564 GBP
Retailer 4£8,802 GBP
Retailer 6£8,860 GBP
Retailer 9£8,920 GBP
Retailer 5£8,968 GBP
Retailer 11£9,024 GBP
Retailer 2£10,344 GBP
Retailer 12£10,419 GBP
Retailer 1£10,428 GBP
Retailer 3£10,734 GBP
With Clarity£14,630 GBP

36 data points across 13 retailers

13 retailers£7,640 GBP to £14,630 GBP

A
Cheapest Retailer
-
£7,640 GBP
SGD 13,855 SGD
B+
Retailer 2
-
£8,162 GBP
SGD 14,801 SGD
View
B+
Retailer 3
-
£8,564 GBP
$11,492 USD
View
B+
Retailer 4
-
£8,802 GBP
$11,812 USD
View
B+
Retailer 5
-
£8,860 GBP
$11,889 USD
View
B+
Retailer 6
-
£8,920 GBP
$11,970 USD
View
B+
Retailer 7
-
£8,968 GBP
View
B+
Retailer 8
-
£9,024 GBP
$12,109 USD
View
B+
Retailer 9
-
£10,344 GBP
$13,881 USD
View
B+
Retailer 10
-
£10,419 GBP
$13,981 USD
View
B+
Retailer 11
-
£10,428 GBP
€13,327 EUR
View
B+
Retailer 12
-
£10,734 GBP
$14,405 USD
View
Most Expensive
B
With Clarity
6561042587 · Nov 1
£14,630 GBP
$19,632 USD
View
12 more retailers have this diamond
Prices start from £7,640 GBPSave up to £6,989 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
£7,640 GBP