CaratHunter
Plans
Cushion|Natural|GIA

1.71ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6551325602

Certificate GIA 6551325602

Diamond specifications and retailer prices

From £2,824 GBP
As of November 5, 2026
Save £2,123 GBP (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,947 GBP at MOH London · As of November 2, 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 6551325602. Listed at 6 retailers as of November 2, 2026, with prices from £2,824 to £4,947, a £2,123 spread on the same certified stone. MOH London lists it at £4,947. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551325602
Dimensions7.69 × 6.00 × 4.09 mm
L/W Ratio1.28
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.69 mm6.00 mm1.71 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551325602
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 68.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,947 GBP|Low: £2,824 GBP|High: £5,007 GBP|Avg: £3,495 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£2,824 GBP
Retailer 5£2,959 GBP
Retailer 3£2,978 GBP
Retailer 2£3,329 GBP
Retailer 4£3,611 GBP
MOH London£4,947 GBP

44 data points across 6 retailers

6 retailers£2,824 GBP to £4,947 GBP

A
Cheapest Retailer
-
£2,824 GBP
Retailer 2
-
£2,959 GBP
View
Price last confirmed 13 days ago
B+
Retailer 3
-
£2,978 GBP
View
B+
Retailer 4
-
£3,329 GBP
View
B+
Retailer 5
-
£3,611 GBP
View
Most Expensive
B
MOH London
D8A6D52EE · Nov 2
£4,947 GBP
View
5 more retailers have this diamond
Prices start from £2,824 GBPSave up to £2,123 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.

A
1.71ct Cushion
£2,824 GBP