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Cushion|Natural|GIA

0.30ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 5553942605

Certificate GIA 5553942605

Diamond specifications and retailer prices

From £141 GBP
₹17,948 INR
As of November 1, 2026
Save £301 GBP (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £442 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.3ct natural cushion diamond

This 0.3ct natural cushion sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553942605. Listed at 14 retailers as of November 1, 2026, with prices from £141 to £442, a £301 spread on the same certified stone. MOH London lists it at £442. 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

0.30
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle35.1°
Pavilion angle35.9°
OriginNatural
Grading LabGIA
CertificateGIA 5553942605
Dimensions3.99 × 3.79 × 2.58 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizeNone
Top View
3.99 mm3.79 mm0.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5553942605
Side View
Table 64.0%Crown 35.1°Girdle: MED-THKPavilion 35.9°Culet: NoneDepth 68.0%

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: £442 GBP|Low: £141 GBP|High: £457 GBP|Avg: £253 GBP|-3.3%
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
November 2, 2026
Retailer 7£141 GBP
Retailer 5£172 GBP
Retailer 11£177 GBP
Retailer 12£195 GBP
Retailer 10£206 GBP
Retailer 4£215 GBP
Retailer 6£241 GBP
Retailer 9£262 GBP
Retailer 3£287 GBP
Retailer 13£292 GBP
Retailer 8£297 GBP
Retailer 2£339 GBP
MOH London£442 GBP

26 data points across 13 retailers

14 retailers£141 GBP to £442 GBP

A
Cheapest Retailer
-
£141 GBP
₹17,948 INR
A
Retailer 2
-
£172 GBP
HK$1,800 HKD
View
A
Retailer 3
-
£177 GBP
$237 USD
View
Final sale: no returns
A
Retailer 4
-
£195 GBP
$261 USD
View
A
Retailer 5
-
£206 GBP
$276 USD
View
A
Retailer 6
-
£215 GBP
SGD 390 SGD
View
A
Retailer 7
-
£241 GBP
View
A
Retailer 8
-
£262 GBP
View
A
Retailer 9
-
£287 GBP
$384 USD
View
A
Retailer 10
-
£292 GBP
$391 USD
View
A
Retailer 11
-
£297 GBP
ZAR 6,421 ZAR
View
Retailer 12
-
£331 GBP
A$682 AUD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£339 GBP
€432 EUR
View
Most Expensive
B+
MOH London
F0808E3B0 · Nov 1
£442 GBP
View
13 more retailers have this diamond
Prices start from £141 GBPSave up to £301 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
0.30ct Cushion
£141 GBP