Cushion|Natural|GIA

1.71ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6545518098

Certificate GIA 6545518098

Diamond specifications and retailer prices

From £5,783 GBP
$7,760 USD
As of October 28, 2026
Save £496 GBP (8%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £9,436 GBP at MOH London · As of October 26, 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 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 6545518098. Listed at 10 retailers as of October 28, 2026, with a relatively tight 9% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545518098
Dimensions9.07 × 5.73 × 3.88 mm
L/W Ratio1.58
Top View
9.07 mm5.73 mm1.71 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6545518098
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.7%

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: Oct 28
Current: £9,436 GBP|Low: £5,226 GBP|High: £9,774 GBP|Avg: £6,910 GBP|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 28, 2026
Retailer 4£5,641 GBP
Retailer 9£5,655 GBP
Retailer 11£5,701 GBP
Retailer 10£5,783 GBP
Retailer 3£6,262 GBP
Retailer 2£6,278 GBP
Retailer 6£6,370 GBP
Retailer 5£7,348 GBP
Retailer 7£7,447 GBP
Retailer 8£8,161 GBP
MOH London£9,436 GBP

39 data points across 11 retailers

10 retailers£5,783 GBP to £6,278 GBP

Retailer 1
-
£5,641 GBP
$7,570 USD
Price last confirmed 6 days ago
Retailer 2
-
£5,701 GBP
$7,651 USD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
£5,783 GBP
$7,760 USD
View
B
Retailer 4
-
£6,262 GBP
$8,403 USD
View
B+
Retailer 5
-
£6,278 GBP
View
Retailer 6
-
£6,370 GBP
A$13,152 AUD
View
Price last confirmed 10 days ago
Retailer 7
-
£7,348 GBP
€9,391 EUR
View
Price last confirmed 7 days ago
Retailer 8
-
£7,447 GBP
$9,993 USD
View
Price last confirmed 11 days ago
Retailer 9
-
£8,161 GBP
ZAR 176,914 ZAR
View
Price last confirmed 11 days ago
Most Expensive
MOH London
A26EB26F6 · Oct 26
£9,436 GBP
View
Price last confirmed 7 days ago
9 more retailers have this diamond
Prices start from £5,783 GBPSave up to £496 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
£5,783 GBP