Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2546879386

Certificate GIA 2546879386

Diamond specifications and retailer prices

From £525 GBP
HK$5,500 HKD
As of October 31, 2026
Save £458 GBP (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,234 GBP at MOH London · As of October 21, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546879386. Listed at 15 retailers as of October 31, 2026, with a 87% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 2546879386
Dimensions5.52 × 5.50 × 3.68 mm
L/W Ratio1.00
Top View
5.52 mm5.50 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546879386
Side View
Table 64.0%CrownGirdle: STK-ETKPavilion 37.5°Culet: NoneDepth 66.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,234 GBP|Low: £516 GBP|High: £1,263 GBP|Avg: £847 GBP|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 8£525 GBP
Retailer 7£608 GBP
Retailer 2£694 GBP
Retailer 12£709 GBP
Retailer 13£722 GBP
Retailer 4£729 GBP
Retailer 10£784 GBP
Retailer 5£856 GBP
Retailer 3£863 GBP
Retailer 9£944 GBP
Retailer 11£982 GBP
Retailer 6£1,025 GBP
Retailer 14£1,089 GBP
MOH London£1,234 GBP

32 data points across 14 retailers

15 retailers£525 GBP to £984 GBP

A
Cheapest Retailer
-
£525 GBP
HK$5,500 HKD
A
Retailer 2
-
£608 GBP
$815 USD
View
Final sale: no returns
A
Retailer 3
-
£694 GBP
$930 USD
View
A
Retailer 4
-
£709 GBP
$950 USD
View
A
Retailer 5
-
£722 GBP
$967 USD
View
Retailer 6
-
£729 GBP
SGD 1,320 SGD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£784 GBP
View
B+
Retailer 8
-
£856 GBP
$1,147 USD
View
B+
Retailer 9
-
£863 GBP
$1,156 USD
View
B+
Retailer 10
-
£944 GBP
€1,205 EUR
View
B+
Retailer 11
-
£982 GBP
ZAR 21,251 ZAR
View
B+
Retailer 12
-
£984 GBP
A$2,028 AUD
View
Retailer 13
-
£1,025 GBP
A$2,113 AUD
View
Price last confirmed 28 days ago
Retailer 14
-
£1,089 GBP
$1,459 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
BA4B8AC2A · Oct 21
£1,234 GBP
View
Price last confirmed 11 days ago
14 more retailers have this diamond
Prices start from £525 GBPSave up to £458 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
£525 GBP