Radiant|Natural|GIA

1.40ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 5556645666

Certificate GIA 5556645666

Diamond specifications and retailer prices

From $3,897 USD
As of November 6, 2026
Save $4,620 USD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,517 USD 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 21 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
Color
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: $7,744 USD|Low: $4,429 USD|High: $7,880 USD|Avg: $5,396 USD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 4$4,429 USD
Retailer 8$4,429 USD
Retailer 9$4,476 USD
Retailer 10$4,648 USD
Retailer 5$4,813 USD
Retailer 3$4,826 USD
Retailer 12$4,928 USD
Retailer 11$5,164 USD
Retailer 6$5,502 USD
Retailer 7$5,964 USD
Retailer 2$7,145 USD
Retailer 1$7,744 USD

45 data points across 12 retailers

21 retailers$3,897 USD to $8,517 USD

B+
Cheapest Retailer
-
$3,897 USD
B+
Retailer 2
-
$4,160 USD
View
B+
Retailer 3
-
$4,195 USD
View
Retailer 4
-
$4,429 USD
View
Price last confirmed 47 days ago
B
Retailer 5
-
$4,429 USD
View
B
Retailer 6
-
$4,429 USD
View
Retailer 7
-
$4,429 USD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$4,476 USD
View
B
Retailer 9
-
$4,648 USD
View
B+
Retailer 10
-
$4,813 USD
View
Retailer 11
-
$4,928 USD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$5,110 USD
View
Retailer 13
-
$5,110 USD
View
Price last confirmed 47 days ago
B
Retailer 14
-
$5,164 USD
View
Retailer 15
-
$5,397 USD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$5,502 USD
View
B
Retailer 17
-
$5,964 USD
View
B
Retailer 18
-
$7,145 USD
View
B
Retailer 19
-
$7,744 USD
View
B
Retailer 20
-
$8,517 USD
View
Most Expensive
NZ Jewellers
52092677-de5d-4687-a4e5-a3e696dbc067 · Sep 20
$8,517 USD
View
Price last confirmed 47 days ago
20 more retailers have this diamond
Prices start from $3,897 USDSave up to $4,620 USD

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
$3,897 USD