Marquise|Natural|GIA

1.71ct J SI2 Marquise Natural Diamond

EX • J/SI2

Diamond specifications and retailer prices

From £7,397 GBP
CA$13,786 CAD
As of November 2, 2026
Save £5,277 GBP (42%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £12,673 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 18 retailers as of October 30, 2026, with a 71% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions11.54 × 6.28 × 4.10 mm
L/W Ratio1.84
Top View
11.54 mm6.28 mm1.71 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 61.0%CrownGirdle: ThickPavilionCuletDepth 65.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £12,673 GBP|Low: £6,655 GBP|High: £12,673 GBP|Avg: £8,798 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7£6,655 GBP
Retailer 8£7,397 GBP
Retailer 4£7,604 GBP
Retailer 6£8,237 GBP
Retailer 9£8,325 GBP
Retailer 5£8,365 GBP
Retailer 10£8,941 GBP
Retailer 2£8,990 GBP
Retailer 3£9,505 GBP
NZ Jewellers£12,673 GBP

29 data points across 10 retailers

18 retailers£7,397 GBP to £12,673 GBP

Retailer 1
-
£6,655 GBP
$8,930 USD
Price last confirmed 26 days ago
B
Retailer 2
-
£7,397 GBP
CA$13,786 CAD
View
B
Retailer 3
-
£7,604 GBP
$10,204 USD
View
Retailer 4
-
£8,237 GBP
$11,054 USD
View
Price last confirmed 25 days ago
Retailer 5
-
£8,237 GBP
$11,054 USD
View
Price last confirmed 32 days ago
B
Retailer 6
-
£8,237 GBP
$11,054 USD
View
C
Retailer 7
-
£8,325 GBP
$11,171 USD
View
C
Retailer 8
-
£8,365 GBP
$11,225 USD
View
Retailer 9
-
£8,365 GBP
$11,225 USD
View
Price last confirmed 32 days ago
C
Retailer 10
-
£8,941 GBP
$11,998 USD
View
B
Retailer 11
-
£8,990 GBP
View
Retailer 12
-
£9,505 GBP
$12,755 USD
View
Price last confirmed 52 days ago
Retailer 13
-
£9,505 GBP
$12,755 USD
View
Price last confirmed 24 days ago
Retailer 14
-
£9,505 GBP
$12,755 USD
View
Price last confirmed 34 days ago
C
Retailer 15
-
£9,505 GBP
$12,755 USD
View
Retailer 16
-
£12,673 GBP
$17,007 USD
View
Price last confirmed 30 days ago
C
Retailer 17
-
£12,673 GBP
$17,007 USD
View
Most Expensive
NZ Jewellers
3746b75e-5ef7-4673-873c-fdc108c9476a · Sep 30
£12,673 GBP
$17,007 USD
View
Price last confirmed 33 days ago
17 more retailers have this diamond
Prices start from £7,397 GBPSave up to £5,277 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
£7,397 GBP