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Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6541438892

Certificate GIA 6541438892

Diamond specifications and retailer prices

From £628 GBP
₹80,312 INR
As of November 2, 2026
Save £896 GBP (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,525 GBP at Moon Ocean · As of November 2, 2026
View at Moon Ocean

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541438892. Listed at 11 retailers as of November 2, 2026, with prices from £628 to £1,525, a £896 spread on the same certified stone. Moon Ocean lists it at £1,525. 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

0.90
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541438892
Dimensions6.72 × 4.56 × 3.09 mm
L/W Ratio1.47
Top View
6.72 mm4.56 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541438892
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.9%

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 2
Current: £1,525 GBP|Low: £628 GBP|High: £1,680 GBP|Avg: £1,150 GBP|-9.3%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 2£628 GBP
Retailer 8£792 GBP
Retailer 9£892 GBP
Retailer 7£892 GBP
Retailer 3£935 GBP
Retailer 10£1,010 GBP
Retailer 5£1,112 GBP
Retailer 6£1,161 GBP
Retailer 4£1,452 GBP
Moon Ocean£1,525 GBP

27 data points across 10 retailers

11 retailers£628 GBP to £1,525 GBP

A
Cheapest Retailer
-
£628 GBP
₹80,312 INR
A
Retailer 2
-
£792 GBP
$1,063 USD
View
B+
Retailer 3
-
£892 GBP
$1,197 USD
View
B+
Retailer 4
-
£892 GBP
$1,197 USD
View
B+
Retailer 5
-
£935 GBP
View
B+
Retailer 6
-
£1,010 GBP
$1,355 USD
View
B+
Retailer 7
-
£1,112 GBP
€1,421 EUR
View
Retailer 8
-
£1,127 GBP
A$2,327 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
£1,161 GBP
ZAR 25,160 ZAR
View
B
Retailer 10
-
£1,452 GBP
View
Most Expensive
B
Moon Ocean
NVN-116C2E804-892 · Nov 2
£1,525 GBP
View
10 more retailers have this diamond
Prices start from £628 GBPSave up to £896 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
0.90ct Cushion
£628 GBP