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Cushion|Natural|GIA

1.70ct J SI2 Cushion Natural Diamond

ID • J/SI2 • GIA 1459446522

Certificate GIA 1459446522

Diamond specifications and retailer prices

From £2,522 GBP
HK$26,400 HKD
As of October 31, 2026
Save £2,647 GBP (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,169 GBP at MOH London · As of October 29, 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 1459446522. Listed at 19 retailers as of October 29, 2026, with prices from £2,522 to £5,169, a £2,647 spread on the same certified stone. MOH London lists it at £5,169. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle44.69°
Pavilion angle54.73°
OriginNatural
Grading LabGIA
CertificateGIA 1459446522
Dimensions6.86 × 6.35 × 4.40 mm
L/W Ratio1.08
Cert comments
Additional pinpoints are not shown. Clouds are not shown.
Key to symbols
Feather
Top View
6.86 mm6.35 mm1.70 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1459446522
Side View
Table 65.0%Crown 44.69°Girdle: MED-STKPavilion 54.73°Culet: NoneDepth 69.2%

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: Oct 31
Current: £5,169 GBP|Low: £2,522 GBP|High: £5,169 GBP|Avg: £3,180 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3£2,522 GBP
Retailer 2£2,572 GBP
Retailer 8£2,754 GBP
Retailer 9£2,887 GBP
Retailer 10£2,979 GBP
Retailer 7£3,092 GBP
Retailer 6£3,201 GBP
Retailer 5£3,274 GBP
Retailer 4£3,653 GBP
MOH London£5,169 GBP

29 data points across 10 retailers

19 retailers£2,522 GBP to £5,169 GBP

A
Cheapest Retailer
-
£2,522 GBP
HK$26,400 HKD
A
Retailer 2
-
£2,572 GBP
₹328,163 INR
View
B+
Retailer 3
-
£2,754 GBP
$3,690 USD
View
B+
Retailer 4
-
£2,840 GBP
$3,805 USD
View
A
Retailer 5
-
£2,887 GBP
SGD 5,227 SGD
View
B+
Retailer 6
-
£2,979 GBP
$3,991 USD
View
Final sale: no returns
B+
Retailer 7
-
£3,092 GBP
$4,143 USD
View
B+
Retailer 8
-
£3,201 GBP
View
B+
Retailer 9
-
£3,202 GBP
SGD 5,797 SGD
View
B+
Retailer 10
-
£3,228 GBP
$4,325 USD
View
B+
Retailer 11
-
£3,274 GBP
View
B+
Retailer 12
-
£3,329 GBP
$4,460 USD
View
B+
Retailer 13
-
£3,338 GBP
$4,473 USD
View
B+
Retailer 14
-
£3,369 GBP
$4,514 USD
View
B+
Retailer 15
-
£3,388 GBP
$4,540 USD
View
B+
Retailer 16
-
£3,413 GBP
$4,573 USD
View
B+
Retailer 17
-
£3,653 GBP
€4,661 EUR
View
B
Retailer 18
-
£4,913 GBP
$6,582 USD
View
Most Expensive
B
MOH London
8ABDAE3E3 · Oct 29
£5,169 GBP
View
18 more retailers have this diamond
Prices start from £2,522 GBPSave up to £2,647 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
£2,522 GBP