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Cushion|Natural|GIA

0.30ct G SI1 Cushion Natural Diamond

ID • G/SI1 • GIA 2566559865

Certificate GIA 2566559865

Diamond specifications and retailer prices

From £295 GBP
$395 USD
As of November 1, 2026
Save £351 GBP (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £645 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 G 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 2566559865. Listed at 12 retailers as of November 1, 2026, with prices from £295 to £645, a £351 spread on the same certified stone. MOH London lists it at £645. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle32.3°
OriginNatural
Grading LabGIA
CertificateGIA 2566559865
Dimensions3.83 × 3.77 × 2.47 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
Top View
3.83 mm3.77 mm0.30 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566559865
Side View
Table 63.0%Crown 37.6°Girdle: THN-THKPavilion 32.3°Culet: NoneDepth 65.6%

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: £645 GBP|Low: £209 GBP|High: £648 GBP|Avg: £405 GBP|-0.4%
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 5£209 GBP
Retailer 7£295 GBP
Retailer 4£333 GBP
Retailer 6£374 GBP
Retailer 13£378 GBP
Retailer 11£383 GBP
Retailer 10£392 GBP
Retailer 3£396 GBP
Retailer 12£423 GBP
Retailer 9£443 GBP
Retailer 8£521 GBP
Retailer 2£565 GBP
MOH London£645 GBP

17 data points across 13 retailers

12 retailers£295 GBP to £645 GBP

Retailer 1
-
£209 GBP
$280 USD
Price last confirmed 18 days ago
A
Retailer 2
-
£295 GBP
$395 USD
View
B+
Retailer 3
-
£374 GBP
View
B+
Retailer 4
-
£378 GBP
$507 USD
View
B+
Retailer 5
-
£383 GBP
$514 USD
View
B+
Retailer 6
-
£392 GBP
View
B
Retailer 7
-
£396 GBP
$531 USD
View
B+
Retailer 8
-
£423 GBP
$567 USD
View
B+
Retailer 9
-
£443 GBP
ZAR 9,589 ZAR
View
B
Retailer 10
-
£521 GBP
€665 EUR
View
B
Retailer 11
-
£565 GBP
View
Most Expensive
B
MOH London
AABEE4D56 · Nov 1
£645 GBP
View
11 more retailers have this diamond
Prices start from £295 GBPSave up to £351 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
£295 GBP