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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 $4,994 SGD
As of November 6, 2026
Save $5,921 SGD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,915 SGD 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: $6,032 SGD|Low: $5,676 SGD|High: $10,099 SGD|Avg: $6,913 SGD
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$5,676 SGD
Retailer 10$5,676 SGD
Retailer 11$5,736 SGD
Retailer 12$5,957 SGD
Retailer 1$6,032 SGD
Retailer 7$6,168 SGD
Retailer 4$6,185 SGD
Retailer 2$6,316 SGD
Retailer 13$6,618 SGD
Retailer 8$7,051 SGD
Retailer 9$7,643 SGD
Retailer 3$9,157 SGD
Retailer 6$9,925 SGD

45 data points across 13 retailers

22 retailers$4,994 SGD to $10,915 SGD

B+
Cheapest Retailer
-
$4,994 SGD
B+
Retailer 2
-
$5,331 SGD
View
B+
Retailer 3
-
$5,376 SGD
View
Retailer 4
-
$5,676 SGD
View
Price last confirmed 47 days ago
B
Retailer 5
-
$5,676 SGD
View
B
Retailer 6
-
$5,676 SGD
View
Retailer 7
-
$5,676 SGD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$5,736 SGD
View
B
Retailer 9
-
$5,957 SGD
View
Retailer 10
-
$6,032 SGD
View
B+
Retailer 11
-
$6,168 SGD
View
Retailer 12
-
$6,316 SGD
View
Price last confirmed 29 days ago
B
Retailer 13
-
$6,549 SGD
View
Retailer 14
-
$6,549 SGD
View
Price last confirmed 47 days ago
B
Retailer 15
-
$6,618 SGD
View
Retailer 16
-
$6,917 SGD
View
Price last confirmed 15 days ago
B
Retailer 17
-
$7,051 SGD
View
B
Retailer 18
-
$7,643 SGD
View
B
Retailer 19
-
$9,157 SGD
View
B
Retailer 20
-
$9,925 SGD
View
B
Retailer 21
-
$10,915 SGD
View
Most Expensive
NZ Jewellers
52092677-de5d-4687-a4e5-a3e696dbc067 · Sep 20
$10,915 SGD
$8,517 USD
View
Price last confirmed 47 days ago
21 more retailers have this diamond
Prices start from $4,994 SGDSave up to $5,921 SGD

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
$4,994 SGD