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Marquise|Natural|GIA

1.71ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1568329804

Certificate GIA 1568329804

Diamond specifications and retailer prices

From £8,490 GBP
SGD 15,396 SGD
As of November 1, 2026
Save £6,726 GBP (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £15,216 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1568329804. Listed at 15 retailers as of November 1, 2026, with prices from £8,490 to £15,216, a £6,726 spread on the same certified stone. With Clarity lists it at £15,216. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.62°
Pavilion angle38.51°
OriginNatural
Grading LabGIA
CertificateGIA 1568329804
Dimensions11.88 × 6.25 × 3.69 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.88 mm6.25 mm1.71 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568329804
Side View
Table 60.0%Crown 36.62°Girdle: VTN-THKPavilion 38.51°Culet: NDepth 59.1%

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: £8,953 GBP|Low: £8,490 GBP|High: £15,216 GBP|Avg: £10,505 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
With Clarity
November 2, 2026
Retailer 2£8,490 GBP
Retailer 5£8,907 GBP
Retailer 1£8,953 GBP
Retailer 11£8,994 GBP
Retailer 12£9,191 GBP
Retailer 3£9,215 GBP
Retailer 8£9,326 GBP
Retailer 13£9,386 GBP
Retailer 6£10,522 GBP
Retailer 14£10,806 GBP
Retailer 7£10,846 GBP
Retailer 10£11,113 GBP
Retailer 9£12,515 GBP
Retailer 4£13,134 GBP
With Clarity£15,216 GBP

34 data points across 15 retailers

15 retailers£8,490 GBP to £15,216 GBP

B+
Cheapest Retailer
-
£8,490 GBP
SGD 15,396 SGD
B+
Retailer 2
-
£8,907 GBP
$11,952 USD
View
B
Retailer 3
-
£8,953 GBP
$12,015 USD
View
B+
Retailer 4
-
£8,994 GBP
$12,070 USD
View
B+
Retailer 5
-
£9,191 GBP
SGD 16,667 SGD
View
B
Retailer 6
-
£9,215 GBP
$12,366 USD
View
B+
Retailer 7
-
£9,326 GBP
View
B
Retailer 8
-
£9,386 GBP
$12,595 USD
View
B
Retailer 9
-
£10,522 GBP
$14,120 USD
View
B
Retailer 10
-
£10,806 GBP
$14,501 USD
View
B
Retailer 11
-
£10,846 GBP
€13,862 EUR
View
B
Retailer 12
-
£11,113 GBP
$14,914 USD
View
B
Retailer 13
-
£12,515 GBP
$16,794 USD
View
B
Retailer 14
-
£13,134 GBP
$17,625 USD
View
Most Expensive
B
With Clarity
1568329804 · Nov 1
£15,216 GBP
$20,419 USD
View
14 more retailers have this diamond
Prices start from £8,490 GBPSave up to £6,726 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.

B+
1.71ct Marquise
£8,490 GBP