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Cushion|Natural|GIA

1.70ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 2235856156

Certificate GIA 2235856156

Diamond specifications and retailer prices

From £2,589 GBP
$3,468 USD
As of October 31, 2026
Save £2,478 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,066 GBP at MOH London · As of November 1, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235856156. Listed at 14 retailers as of October 31, 2026, with prices from £2,589 to £5,066, a £2,478 spread on the same certified stone. MOH London lists it at £5,066. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle37.57°
OriginNatural
Grading LabGIA
CertificateGIA 2235856156
Dimensions6.75 × 6.66 × 4.59 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
6.75 mm6.66 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235856156
Side View
Table 61.0%CrownGirdle: THK-ETKPavilion 37.57°Culet: NoneDepth 68.8%

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: Oct 31
Current: £5,066 GBP|Low: £2,589 GBP|High: £5,422 GBP|Avg: £3,440 GBP|-5.6%
MOH London
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 2, 2026
Retailer 3£2,589 GBP
Retailer 7£2,634 GBP
Retailer 12£2,713 GBP
Retailer 4£2,914 GBP
Retailer 13£2,958 GBP
Retailer 10£3,014 GBP
Retailer 2£3,129 GBP
Retailer 8£3,135 GBP
Retailer 11£3,135 GBP
Retailer 9£3,239 GBP
Retailer 6£3,361 GBP
Retailer 5£4,421 GBP
MOH London£5,066 GBP

42 data points across 13 retailers

14 retailers£2,589 GBP to £5,066 GBP

A
Cheapest Retailer
-
£2,589 GBP
$3,468 USD
A
Retailer 2
-
£2,634 GBP
CA$4,901 CAD
View
A
Retailer 3
-
£2,713 GBP
$3,635 USD
View
B+
Retailer 4
-
£2,914 GBP
$3,905 USD
View
B+
Retailer 5
-
£2,958 GBP
$3,963 USD
View
B+
Retailer 6
-
£3,014 GBP
$4,039 USD
View
B+
Retailer 7
-
£3,129 GBP
View
B+
Retailer 8
-
£3,135 GBP
$4,200 USD
View
B+
Retailer 9
-
£3,135 GBP
$4,200 USD
View
B+
Retailer 10
-
£3,239 GBP
$4,340 USD
View
B+
Retailer 11
-
£3,361 GBP
€4,289 EUR
View
B+
Retailer 12
-
£3,388 GBP
CA$6,306 CAD
View
B
Retailer 13
-
£4,421 GBP
$5,924 USD
View
Most Expensive
B
MOH London
FDEC76607 · Nov 1
£5,066 GBP
View
13 more retailers have this diamond
Prices start from £2,589 GBPSave up to £2,478 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
£2,589 GBP