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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 $327 NZD
₹17,572 INR
As of October 31, 2026
Save $759 NZD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,086 NZD 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 1525418159. Listed at 11 retailers as of October 31, 2026, with prices from $327 to $1,086, a $759 spread on the same certified stone. MOH London lists it at $1,086. 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 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: $1,086 NZD|Low: $327 NZD|High: $1,100 NZD|Avg: $668 NZD|-0.8%
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$327 NZD
Retailer 9$497 NZD
Retailer 7$506 NZD
Retailer 10$543 NZD
Retailer 2$594 NZD
Retailer 8$702 NZD
Retailer 5$729 NZD
Retailer 11$749 NZD
Retailer 3$779 NZD
Retailer 6$911 NZD
MOH London$1,086 NZD

37 data points across 11 retailers

11 retailers$327 NZD to $1,086 NZD

A
Cheapest Retailer
-
$327 NZD
₹17,572 INR
B+
Retailer 2
-
$497 NZD
$280 USD
View
B+
Retailer 3
-
$506 NZD
$285 USD
View
B+
Retailer 4
-
$543 NZD
$306 USD
View
B+
Retailer 5
-
$594 NZD
£264 GBP
View
B
Retailer 6
-
$702 NZD
$395 USD
View
B
Retailer 7
-
$729 NZD
ZAR 6,635 ZAR
View
B
Retailer 8
-
$749 NZD
$422 USD
View
Retailer 9
-
$779 NZD
A$675 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$911 NZD
€489 EUR
View
Most Expensive
C
MOH London
E978414B7 · Nov 1
$1,086 NZD
£482 GBP
View
10 more retailers have this diamond
Prices start from $327 NZDSave up to $759 NZD

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
$327 NZD