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Cushion|Natural|GIA

1.70ct J SI2 Cushion Natural Diamond

GD • J/SI2 • GIA 2558699385

Certificate GIA 2558699385

Diamond specifications and retailer prices

From £2,780 GBP
HK$29,100 HKD
As of November 1, 2026
Save £3,119 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,899 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2558699385. Listed at 14 retailers as of November 1, 2026, with prices from £2,780 to £5,899, a £3,119 spread on the same certified stone. MOH London lists it at £5,899. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558699385
Dimensions7.74 × 5.94 × 4.09 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather, Indented Natural
Top View
7.74 mm5.94 mm1.70 ctJ / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558699385
Side View
Table 63.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £5,899 GBP|Low: £2,751 GBP|High: £6,317 GBP|Avg: £3,876 GBP|-6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7£2,780 GBP
Retailer 2£2,958 GBP
Retailer 11£3,418 GBP
Retailer 4£3,446 GBP
Retailer 3£3,530 GBP
Retailer 5£3,662 GBP
Retailer 6£3,684 GBP
Retailer 10£3,704 GBP
Retailer 9£3,817 GBP
Retailer 12£3,912 GBP
Retailer 8£4,192 GBP
MOH London£5,899 GBP

25 data points across 12 retailers

14 retailers£2,780 GBP to £5,899 GBP

B+
Cheapest Retailer
-
£2,780 GBP
HK$29,100 HKD
B+
Retailer 2
-
£2,958 GBP
₹377,472 INR
View
B+
Retailer 3
-
£3,418 GBP
$4,580 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,446 GBP
SGD 6,239 SGD
View
B
Retailer 5
-
£3,530 GBP
SGD 6,392 SGD
View
B
Retailer 6
-
£3,582 GBP
$4,800 USD
View
B
Retailer 7
-
£3,662 GBP
View
B
Retailer 8
-
£3,684 GBP
View
B
Retailer 9
-
£3,704 GBP
$4,963 USD
View
B
Retailer 10
-
£3,788 GBP
A$7,808 AUD
View
B
Retailer 11
-
£3,817 GBP
$5,115 USD
View
B
Retailer 12
-
£3,912 GBP
$5,241 USD
View
B
Retailer 13
-
£4,192 GBP
€5,349 EUR
View
Most Expensive
C
MOH London
25F3EF6A9 · Nov 1
£5,899 GBP
View
13 more retailers have this diamond
Prices start from £2,780 GBPSave up to £3,119 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+
1.70ct Cushion
£2,780 GBP