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Cushion|Natural|GIA

0.30ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6521066203

Certificate GIA 6521066203

Diamond specifications and retailer prices

From £146 GBP
₹18,617 INR
As of October 31, 2026
Save £336 GBP (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £482 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521066203. Listed at 11 retailers as of October 31, 2026, with prices from £146 to £482, a £336 spread on the same certified stone. MOH London lists it at £482. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.30
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6521066203
Dimensions3.87 × 3.85 × 2.60 mm
L/W Ratio1.01
Top View
3.87 mm3.85 mm0.30 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6521066203
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

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: £482 GBP|Low: £146 GBP|High: £513 GBP|Avg: £304 GBP|-6.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4£146 GBP
Retailer 8£216 GBP
Retailer 7£225 GBP
Retailer 10£240 GBP
Retailer 2£265 GBP
Retailer 9£309 GBP
Retailer 5£323 GBP
Retailer 11£325 GBP
Retailer 3£351 GBP
Retailer 6£401 GBP
MOH London£482 GBP

37 data points across 11 retailers

11 retailers£146 GBP to £482 GBP

A
Cheapest Retailer
-
£146 GBP
₹18,617 INR
B+
Retailer 2
-
£216 GBP
$290 USD
View
B+
Retailer 3
-
£225 GBP
$301 USD
View
B+
Retailer 4
-
£240 GBP
$322 USD
View
B+
Retailer 5
-
£265 GBP
View
B
Retailer 6
-
£309 GBP
$414 USD
View
B
Retailer 7
-
£323 GBP
ZAR 6,999 ZAR
View
B
Retailer 8
-
£325 GBP
$435 USD
View
Retailer 9
-
£351 GBP
A$724 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
£401 GBP
€512 EUR
View
Most Expensive
C
MOH London
99E32D4AE · Nov 1
£482 GBP
View
10 more retailers have this diamond
Prices start from £146 GBPSave up to £336 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
£146 GBP