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Cushion|Natural|GIA

1.70ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 1558587225

Certificate GIA 1558587225

Diamond specifications and retailer prices

From £2,866 GBP
HK$30,000 HKD
As of October 31, 2026
Save £3,229 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,095 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 1558587225. Listed at 14 retailers as of October 31, 2026, with prices from £2,866 to £6,095, a £3,229 spread on the same certified stone. MOH London lists it at £6,095. 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
OriginNatural
Grading LabGIA
CertificateGIA 1558587225
Dimensions8.04 × 6.04 × 4.17 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Twinning Wisp, Crystal, Feather, Indented Natural, Needle
Top View
8.04 mm6.04 mm1.70 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558587225
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.1%

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: Oct 31
Current: £6,095 GBP|Low: £2,847 GBP|High: £6,532 GBP|Avg: £3,986 GBP|-6.7%
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£2,866 GBP
Retailer 6£3,054 GBP
Retailer 10£3,532 GBP
Retailer 3£3,572 GBP
Retailer 12£3,648 GBP
Retailer 2£3,783 GBP
Retailer 5£3,820 GBP
Retailer 9£3,940 GBP
Retailer 11£4,035 GBP
Retailer 4£4,052 GBP
Retailer 8£4,330 GBP
MOH London£6,095 GBP

26 data points across 12 retailers

14 retailers£2,866 GBP to £6,095 GBP

A
Cheapest Retailer
-
£2,866 GBP
HK$30,000 HKD
B+
Retailer 2
-
£3,054 GBP
₹389,711 INR
View
B+
Retailer 3
-
£3,532 GBP
$4,732 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,572 GBP
SGD 6,468 SGD
View
B+
Retailer 5
-
£3,648 GBP
SGD 6,605 SGD
View
B
Retailer 6
-
£3,714 GBP
$4,976 USD
View
B
Retailer 7
-
£3,783 GBP
View
B
Retailer 8
-
£3,820 GBP
View
B
Retailer 9
-
£3,938 GBP
A$8,118 AUD
View
B
Retailer 10
-
£3,940 GBP
$5,279 USD
View
B+
Retailer 11
-
£4,035 GBP
$5,407 USD
View
Retailer 12
-
£4,052 GBP
$5,429 USD
View
Price last confirmed 16 days ago
B
Retailer 13
-
£4,330 GBP
€5,526 EUR
View
Most Expensive
B
MOH London
1CE160ECC · Nov 1
£6,095 GBP
View
13 more retailers have this diamond
Prices start from £2,866 GBPSave up to £3,229 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
£2,866 GBP