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Cushion|Natural|GIA

1.71ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6542681898

Certificate GIA 6542681898

Diamond specifications and retailer prices

From £2,888 GBP
As of November 6, 2026
Save £3,127 GBP (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,015 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.71ct natural cushion diamond

This 1.71ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542681898. Listed at 16 retailers as of November 4, 2026, with prices from £2,888 to £6,015, a £3,127 spread on the same certified stone. MOH London lists it at £6,015. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6542681898
Dimensions7.91 × 6.21 × 4.33 mm
L/W Ratio1.27
Top View
7.91 mm6.21 mm1.71 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6542681898
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £6,015 GBP|Low: £2,888 GBP|High: £6,104 GBP|Avg: £3,885 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£2,888 GBP
Retailer 4£3,027 GBP
Retailer 9£3,242 GBP
Retailer 6£3,431 GBP
Retailer 7£3,623 GBP
Retailer 2£3,728 GBP
Retailer 5£4,266 GBP
Retailer 3£4,619 GBP
MOH London£6,015 GBP

44 data points across 9 retailers

16 retailers£2,888 GBP to £6,015 GBP

B+
Cheapest Retailer
-
£2,888 GBP
B+
Retailer 2
-
£2,959 GBP
View
B+
Retailer 3
-
£2,991 GBP
View
B+
Retailer 4
-
£3,027 GBP
View
B+
Retailer 5
-
£3,242 GBP
View
Retailer 6
-
£3,431 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£3,488 GBP
View
B
Retailer 8
-
£3,609 GBP
View
B
Retailer 9
-
£3,612 GBP
View
B
Retailer 10
-
£3,623 GBP
View
B+
Retailer 11
-
£3,728 GBP
View
Retailer 12
-
£4,179 GBP
View
Price last confirmed 15 days ago
B
Retailer 13
-
£4,266 GBP
View
B
Retailer 14
-
£4,619 GBP
View
B
Retailer 15
-
£5,480 GBP
View
Most Expensive
B
MOH London
9937217E9 · Nov 4
£6,015 GBP
View
15 more retailers have this diamond
Prices start from £2,888 GBPSave up to £3,127 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 Cushion
£2,888 GBP