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Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 1243991686

Certificate GIA 1243991686

Diamond specifications and retailer prices

From £1,172 GBP
$1,570 USD
As of October 28, 2026
Save £1,409 GBP (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,581 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-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 1243991686. Listed at 22 retailers as of October 28, 2026, with prices from £1,172 to £2,581, a £1,409 spread on the same certified stone. MOH London lists it at £2,581. 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

0.90
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1243991686
Dimensions5.56 × 5.23 × 3.54 mm
L/W Ratio1.06
Culet sizeNone
Top View
5.56 mm5.23 mm0.90 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1243991686
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.7%

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 28
Current: £2,581 GBP|Low: £1,057 GBP|High: £2,612 GBP|Avg: £1,635 GBP|-0.1%
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 11£1,172 GBP
Retailer 3£1,206 GBP
Retailer 8£1,231 GBP
Retailer 9£1,334 GBP
Retailer 4£1,381 GBP
Retailer 7£1,400 GBP
Retailer 12£1,453 GBP
Retailer 2£1,616 GBP
Retailer 10£1,923 GBP
Retailer 6£2,012 GBP
Retailer 5£2,173 GBP
MOH London£2,581 GBP

45 data points across 12 retailers

22 retailers£1,172 GBP to £2,581 GBP

B
Cheapest Retailer
-
£1,172 GBP
$1,570 USD
B+
Retailer 2
-
£1,206 GBP
$1,616 USD
View
B+
Retailer 3
-
£1,217 GBP
$1,630 USD
View
B+
Retailer 4
-
£1,220 GBP
$1,634 USD
View
B
Retailer 5
-
£1,231 GBP
$1,650 USD
View
Final sale: no returns
B
Retailer 6
-
£1,253 GBP
$1,680 USD
View
B
Retailer 7
-
£1,262 GBP
A$2,602 AUD
View
B
Retailer 8
-
£1,334 GBP
$1,788 USD
View
B
Retailer 9
-
£1,381 GBP
$1,850 USD
View
B
Retailer 10
-
£1,386 GBP
$1,857 USD
View
B
Retailer 11
-
£1,400 GBP
$1,876 USD
View
B
Retailer 12
-
£1,453 GBP
$1,947 USD
View
B
Retailer 13
-
£1,537 GBP
$2,060 USD
View
B
Retailer 14
-
£1,537 GBP
$2,060 USD
View
B
Retailer 15
-
£1,590 GBP
$2,130 USD
View
B
Retailer 16
-
£1,616 GBP
View
B
Retailer 17
-
£1,619 GBP
A$3,338 AUD
View
B
Retailer 18
-
£1,869 GBP
CA$3,478 CAD
View
Retailer 19
-
£1,923 GBP
A$3,963 AUD
View
Price last confirmed 26 days ago
B
Retailer 20
-
£2,012 GBP
€2,568 EUR
View
B
Retailer 21
-
£2,173 GBP
ZAR 47,040 ZAR
View
Most Expensive
B
MOH London
E5E14F119 · Nov 1
£2,581 GBP
View
21 more retailers have this diamond
Prices start from £1,172 GBPSave up to £1,409 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+
0.90ct Cushion
£1,172 GBP