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Radiant|Natural|GIA

1.40ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 5556645666

Certificate GIA 5556645666

Diamond specifications and retailer prices

From $5,672 AUD
As of November 6, 2026
Save $6,724 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $12,396 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.4ct natural radiant diamond

This 1.4ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded J 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 5556645666. Listed at 22 retailers as of November 5, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.40
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5556645666
Dimensions7.45 × 5.44 × 3.77 mm
L/W Ratio1.37
Culet sizeNone
Top View
7.45 mm5.44 mm1.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5556645666
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,851 AUD|Low: $6,446 AUD|High: $11,469 AUD|Avg: $7,851 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 5$6,446 AUD
Retailer 10$6,446 AUD
Retailer 11$6,514 AUD
Retailer 12$6,765 AUD
Retailer 1$6,851 AUD
Retailer 7$7,005 AUD
Retailer 4$7,024 AUD
Retailer 2$7,172 AUD
Retailer 13$7,516 AUD
Retailer 8$8,008 AUD
Retailer 9$8,680 AUD
Retailer 3$10,399 AUD
Retailer 6$11,271 AUD

45 data points across 13 retailers

22 retailers$5,672 AUD to $12,396 AUD

B+
Cheapest Retailer
-
$5,672 AUD
B+
Retailer 2
-
$6,054 AUD
View
B+
Retailer 3
-
$6,105 AUD
View
Retailer 4
-
$6,446 AUD
View
Price last confirmed 47 days ago
B
Retailer 5
-
$6,446 AUD
View
B
Retailer 6
-
$6,446 AUD
View
Retailer 7
-
$6,446 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$6,514 AUD
View
B
Retailer 9
-
$6,765 AUD
View
Retailer 10
-
$6,851 AUD
View
B+
Retailer 11
-
$7,005 AUD
View
Retailer 12
-
$7,172 AUD
View
Price last confirmed 29 days ago
B
Retailer 13
-
$7,437 AUD
View
Retailer 14
-
$7,437 AUD
View
Price last confirmed 47 days ago
B
Retailer 15
-
$7,516 AUD
View
Retailer 16
-
$7,855 AUD
View
Price last confirmed 15 days ago
B
Retailer 17
-
$8,008 AUD
View
B
Retailer 18
-
$8,680 AUD
View
B
Retailer 19
-
$10,399 AUD
View
B
Retailer 20
-
$11,271 AUD
View
B
Retailer 21
-
$12,396 AUD
View
Most Expensive
NZ Jewellers
52092677-de5d-4687-a4e5-a3e696dbc067 · Sep 20
$12,396 AUD
$8,517 USD
View
Price last confirmed 47 days ago
21 more retailers have this diamond
Prices start from $5,672 AUDSave up to $6,724 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.

B+
1.40ct Radiant
$5,672 AUD