CaratHunter
Plans
Cushion|Natural|GIA

1.70ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5406613135

Certificate GIA 5406613135

Diamond specifications and retailer prices

From £2,264 GBP
As of November 6, 2026
Save £2,100 GBP (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,364 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct 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 5406613135. Listed at 7 retailers as of November 4, 2026, with prices from £2,264 to £4,364, a £2,100 spread on the same certified stone. MOH London lists it at £4,364. 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

1.70
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5406613135
Dimensions6.87 × 6.51 × 4.56 mm
L/W Ratio1.06
Top View
6.87 mm6.51 mm1.70 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5406613135
Side View
Table 60.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 70.1%

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 6
Current: £4,364 GBP|Low: £2,264 GBP|High: £4,428 GBP|Avg: £3,130 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£2,264 GBP
Retailer 5£2,573 GBP
Retailer 3£2,717 GBP
Retailer 2£2,901 GBP
Retailer 6£3,814 GBP
MOH London£4,364 GBP

43 data points across 6 retailers

7 retailers£2,264 GBP to £4,364 GBP

A
Cheapest Retailer
-
£2,264 GBP
A
Retailer 2
-
£2,341 GBP
View
A
Retailer 3
-
£2,514 GBP
View
A
Retailer 4
-
£2,573 GBP
View
A
Retailer 5
-
£2,717 GBP
View
B+
Retailer 6
-
£2,901 GBP
View
Most Expensive
B
MOH London
6FB1F8477 · Nov 4
£4,364 GBP
View
6 more retailers have this diamond
Prices start from £2,264 GBPSave up to £2,100 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
1.70ct Cushion
£2,264 GBP