CaratHunter
Plans
Marquise|Natural|GIA

1.71ct K SI2 Marquise Natural Diamond

ID • K/SI2 • GIA 2558946849

Certificate GIA 2558946849

Diamond specifications and retailer prices

From £5,428 GBP
As of November 6, 2026
Save £414 GBP (7%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £9,653 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558946849. Listed at 7 retailers as of November 6, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558946849
Dimensions11.91 × 6.28 × 3.83 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle
Top View
11.91 mm6.28 mm1.71 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558946849
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.9%

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 6
Current: £5,842 GBP|Low: £4,439 GBP|High: £8,140 GBP|Avg: £5,602 GBP|+8.6%
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
November 6, 2026
Retailer 2£4,439 GBP
Retailer 7£4,545 GBP
Retailer 10£4,712 GBP
Retailer 11£4,768 GBP
Retailer 3£5,169 GBP
Retailer 13£5,328 GBP
Retailer 6£5,428 GBP
Retailer 1£5,842 GBP
Retailer 9£5,858 GBP
Retailer 5£5,893 GBP
Retailer 12£6,259 GBP
Retailer 4£6,659 GBP
Retailer 8£8,119 GBP

28 data points across 13 retailers

7 retailers£5,428 GBP to £5,842 GBP

B+
Cheapest Retailer
-
£5,428 GBP
Retailer 2
-
£5,771 GBP
View
Price last confirmed 36 days ago
B
Retailer 3
-
£5,842 GBP
View
Retailer 4
-
£5,860 GBP
View
Price last confirmed 36 days ago
Retailer 5
-
£6,659 GBP
View
Price last confirmed 38 days ago
Retailer 6
-
£8,119 GBP
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
51677e81-00d9-48f7-b1ed-89cde7bf6210 · Sep 30
£9,653 GBP
$12,920 USD
View
Price last confirmed 37 days ago
6 more retailers have this diamond
Prices start from £5,428 GBPSave up to £414 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
£5,428 GBP