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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 $278 AUD
₹18,607 INR
As of November 2, 2026
Save $640 AUD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $918 AUD 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 November 1, 2026, with prices from $278 to $918, a $640 spread on the same certified stone. MOH London lists it at $918. 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: Nov 2
Current: $918 AUD|Low: $278 AUD|High: $978 AUD|Avg: $579 AUD|-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 2$278 AUD
Retailer 8$413 AUD
Retailer 7$429 AUD
Retailer 10$458 AUD
Retailer 4$506 AUD
Retailer 9$590 AUD
Retailer 5$617 AUD
Retailer 11$619 AUD
Retailer 3$670 AUD
Retailer 6$765 AUD
MOH London$918 AUD

36 data points across 11 retailers

11 retailers$278 AUD to $918 AUD

A
Cheapest Retailer
-
$278 AUD
₹18,607 INR
B+
Retailer 2
-
$413 AUD
$290 USD
View
B+
Retailer 3
-
$429 AUD
$301 USD
View
B+
Retailer 4
-
$458 AUD
$322 USD
View
B+
Retailer 5
-
$506 AUD
£280 GBP
View
B
Retailer 6
-
$590 AUD
$414 USD
View
B
Retailer 7
-
$617 AUD
ZAR 6,999 ZAR
View
B
Retailer 8
-
$619 AUD
$435 USD
View
Retailer 9
-
$670 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$765 AUD
€512 EUR
View
Most Expensive
C
MOH London
99E32D4AE · Nov 1
$918 AUD
£508 GBP
View
10 more retailers have this diamond
Prices start from $278 AUDSave up to $640 AUD

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
$278 AUD