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Cushion|Natural|GIA

1.60ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6455423351

Certificate GIA 6455423351

Diamond specifications and retailer prices

From £3,774 GBP
$5,057 USD
As of October 30, 2026
Save £1,211 GBP (24%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,985 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.6ct natural cushion diamond

This 1.6ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6455423351. Listed at 8 retailers as of October 30, 2026, with prices from £3,774 to £4,985, a £1,211 spread on the same certified stone. Jared lists it at £4,985. 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

1.60
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6455423351
Dimensions7.28 × 6.31 × 4.34 mm
L/W Ratio1.15
Top View
7.28 mm6.31 mm1.60 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6455423351
Side View
Table 62.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 68.7%

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: Oct 30
Current: £4,985 GBP|Low: £3,461 GBP|High: £5,011 GBP|Avg: £4,628 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4£3,956 GBP
Retailer 5£4,521 GBP
Retailer 3£4,912 GBP
Retailer 2£4,979 GBP
Jared£4,985 GBP

39 data points across 5 retailers

8 retailers£3,774 GBP to £4,985 GBP

B+
Cheapest Retailer
-
£3,774 GBP
$5,057 USD
B
Retailer 2
-
£3,956 GBP
$5,300 USD
View
Final sale: no returns
B
Retailer 3
-
£4,521 GBP
$6,057 USD
View
B
Retailer 4
-
£4,829 GBP
$6,470 USD
View
B
Retailer 5
-
£4,829 GBP
$6,470 USD
View
B
Retailer 6
-
£4,912 GBP
€6,268 EUR
View
B
Retailer 7
-
£4,979 GBP
View
Most Expensive
B
Jared
147269819 · Oct 30
£4,985 GBP
$6,680 USD
View
7 more retailers have this diamond
Prices start from £3,774 GBPSave up to £1,211 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+
1.60ct Cushion
£3,774 GBP