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Cushion|Natural|GIA

0.30ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 1525418159

Certificate GIA 1525418159

Diamond specifications and retailer prices

From $258 CAD
₹17,572 INR
As of October 31, 2026
Save $601 CAD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $859 CAD at MOH London · As of October 29, 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 1525418159. Listed at 11 retailers as of October 29, 2026, with prices from $258 to $859, a $601 spread on the same certified stone. MOH London lists it at $859. 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
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1525418159
Dimensions3.82 × 3.81 × 2.56 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
3.82 mm3.81 mm0.30 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1525418159
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 67.3%

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: $859 CAD|Low: $257 CAD|High: $866 CAD|Avg: $527 CAD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 2$258 CAD
Retailer 9$391 CAD
Retailer 7$398 CAD
Retailer 10$427 CAD
Retailer 4$464 CAD
Retailer 8$552 CAD
Retailer 5$574 CAD
Retailer 11$589 CAD
Retailer 3$613 CAD
Retailer 6$717 CAD
MOH London$859 CAD

35 data points across 11 retailers

11 retailers$258 CAD to $859 CAD

A
Cheapest Retailer
-
$258 CAD
₹17,572 INR
B+
Retailer 2
-
$391 CAD
$280 USD
View
B+
Retailer 3
-
$398 CAD
$285 USD
View
B+
Retailer 4
-
$427 CAD
$306 USD
View
B+
Retailer 5
-
$464 CAD
£262 GBP
View
B
Retailer 6
-
$552 CAD
$395 USD
View
B
Retailer 7
-
$574 CAD
ZAR 6,635 ZAR
View
B
Retailer 8
-
$589 CAD
$422 USD
View
Retailer 9
-
$613 CAD
A$675 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$717 CAD
€489 EUR
View
Most Expensive
C
MOH London
E978414B7 · Oct 29
$859 CAD
£484 GBP
View
10 more retailers have this diamond
Prices start from $258 CADSave up to $601 CAD

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
$258 CAD