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Cushion|Natural|GIA

0.30ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1555421216

Certificate GIA 1555421216

Diamond specifications and retailer prices

From £177 GBP
₹22,606 INR
As of October 31, 2026
Save £397 GBP (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £574 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 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 1555421216. Listed at 11 retailers as of October 31, 2026, with prices from £177 to £574, a £397 spread on the same certified stone. MOH London lists it at £574. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555421216
Dimensions3.82 × 3.81 × 2.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
3.82 mm3.81 mm0.30 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555421216
Side View
Table 62.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 67.0%

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: Oct 31
Current: £574 GBP|Low: £177 GBP|High: £686 GBP|Avg: £384 GBP|-16.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4£177 GBP
Retailer 8£268 GBP
Retailer 10£287 GBP
Retailer 2£321 GBP
Retailer 7£341 GBP
Retailer 11£359 GBP
Retailer 9£362 GBP
Retailer 5£386 GBP
Retailer 6£463 GBP
Retailer 3£470 GBP
MOH London£574 GBP

35 data points across 11 retailers

11 retailers£177 GBP to £574 GBP

A
Cheapest Retailer
-
£177 GBP
₹22,606 INR
B+
Retailer 2
-
£268 GBP
$359 USD
View
B+
Retailer 3
-
£287 GBP
$385 USD
View
B+
Retailer 4
-
£321 GBP
View
B
Retailer 5
-
£341 GBP
View
B
Retailer 6
-
£359 GBP
$481 USD
View
B
Retailer 7
-
£362 GBP
$485 USD
View
B
Retailer 8
-
£386 GBP
ZAR 8,351 ZAR
View
B
Retailer 9
-
£463 GBP
€591 EUR
View
Retailer 10
-
£470 GBP
A$969 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
C83572BD0 · Nov 1
£574 GBP
View
10 more retailers have this diamond
Prices start from £177 GBPSave up to £397 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
£177 GBP