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Cushion|Natural|GIA

1.09ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 6561755163

Certificate GIA 6561755163

Diamond specifications and retailer prices

From £650 GBP
HK$6,800 HKD
As of November 1, 2026
Save £489 GBP (43%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,138 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.09ct natural cushion diamond

This 1.09ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6561755163. Listed at 5 retailers as of November 1, 2026, with prices from £650 to £1,138, a £489 spread on the same certified stone. 77 Diamonds lists it at £1,138. 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

1.09
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6561755163
Dimensions7.18 × 5.46 × 3.60 mm
L/W Ratio1.32
Top View
7.18 mm5.46 mm1.09 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6561755163
Side View
Table 62.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 65.8%

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: Nov 1
Current: £1,138 GBP|Low: £650 GBP|High: £1,138 GBP|Avg: £834 GBP|+0.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3£650 GBP
Retailer 2£659 GBP
Retailer 4£934 GBP
77 Diamonds£1,138 GBP

7 data points across 4 retailers

5 retailers£650 GBP to £1,138 GBP

A
Cheapest Retailer
-
£650 GBP
HK$6,800 HKD
A
Retailer 2
-
£659 GBP
₹84,109 INR
View
B+
Retailer 3
-
£781 GBP
A$1,611 AUD
View
B+
Retailer 4
-
£934 GBP
$1,252 USD
View
Most Expensive
B+
77 Diamonds
CUSCPMCTFHWG3 · Nov 2
£1,138 GBP
View
4 more retailers have this diamond
Prices start from £650 GBPSave up to £489 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
1.09ct Cushion
£650 GBP