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Cushion|Natural|GIA

0.90ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1549499353

Certificate GIA 1549499353

Diamond specifications and retailer prices

From £510 GBP
₹64,481 INR
As of October 29, 2026
Save £790 GBP (61%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,300 GBP at Moon Ocean · As of October 29, 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 H 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 1549499353. Listed at 14 retailers as of October 29, 2026, with prices from £510 to £1,300, a £790 spread on the same certified stone. Moon Ocean lists it at £1,300. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549499353
Dimensions5.72 × 5.49 × 3.78 mm
L/W Ratio1.04
Girdle conditionFaceted
Key to symbols
Crystal
Top View
5.72 mm5.49 mm0.90 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549499353
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.9%

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 29
Current: £1,300 GBP|Low: £492 GBP|High: £1,309 GBP|Avg: £839 GBP|+3.6%
Moon Ocean
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 29, 2026
Retailer 7£510 GBP
Retailer 5£532 GBP
Retailer 4£680 GBP
Retailer 12£681 GBP
Retailer 13£761 GBP
Retailer 3£771 GBP
Retailer 14£772 GBP
Retailer 2£782 GBP
Retailer 9£784 GBP
Retailer 8£945 GBP
Retailer 6£968 GBP
Retailer 10£981 GBP
Retailer 11£1,231 GBP
Moon Ocean£1,300 GBP

26 data points across 14 retailers

14 retailers£510 GBP to £1,300 GBP

A
Cheapest Retailer
-
£510 GBP
₹64,481 INR
A
Retailer 2
-
£532 GBP
$707 USD
View
Final sale: no returns
A
Retailer 3
-
£680 GBP
$903 USD
View
A
Retailer 4
-
£681 GBP
$905 USD
View
A
Retailer 5
-
£761 GBP
$1,011 USD
View
A
Retailer 6
-
£771 GBP
$1,025 USD
View
A
Retailer 7
-
£772 GBP
$1,025 USD
View
A
Retailer 8
-
£782 GBP
View
A
Retailer 9
-
£784 GBP
View
A
Retailer 10
-
£945 GBP
€1,196 EUR
View
A
Retailer 11
-
£968 GBP
A$1,979 AUD
View
Price last confirmed 24 days ago
A
Retailer 12
-
£981 GBP
ZAR 21,058 ZAR
View
B+
Retailer 13
-
£1,231 GBP
View
Most Expensive
B+
Moon Ocean
NVN-3C6EB5D90-353 · Oct 29
£1,300 GBP
View
13 more retailers have this diamond
Prices start from £510 GBPSave up to £790 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
£510 GBP