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Oval|Natural|GIA

0.40ct J SI1 Oval Natural Diamond

VG • J/SI1 • GIA 6545768038

Certificate GIA 6545768038

Diamond specifications and retailer prices

From $276 SGD
₹20,565 INR
As of October 27, 2026
Save $612 SGD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,731 SGD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545768038. Listed at 15 retailers as of October 26, 2026, with a 222% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.40
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6545768038
Dimensions6.07 × 3.98 × 2.54 mm
L/W Ratio1.53
Top View
6.07 mm3.98 mm0.40 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6545768038
Side View
Table 62.0%CrownGirdle: Very ThickPavilionCulet: NDepth 63.7%

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 27
Current: $1,731 SGD|Low: $276 SGD|High: $1,739 SGD|Avg: $582 SGD|-0.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 28, 2026
Retailer 8$276 SGD
Retailer 6$327 SGD
Retailer 3$384 SGD
Retailer 7$386 SGD
Retailer 10$411 SGD
Retailer 5$413 SGD
Retailer 14$428 SGD
Retailer 2$486 SGD
Retailer 9$514 SGD
Retailer 12$594 SGD
Retailer 4$615 SGD
Retailer 15$671 SGD
Retailer 11$722 SGD
Retailer 13$888 SGD
NZ Jewellers$1,731 SGD

32 data points across 15 retailers

15 retailers$276 SGD to $888 SGD

A
Cheapest Retailer
-
$276 SGD
₹20,565 INR
B+
Retailer 2
-
$327 SGD
HK$2,000 HKD
View
B+
Retailer 3
-
$384 SGD
$300 USD
View
Retailer 4
-
$386 SGD
$302 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$411 SGD
View
B+
Retailer 6
-
$413 SGD
$323 USD
View
B+
Retailer 7
-
$428 SGD
$335 USD
View
B+
Retailer 8
-
$486 SGD
£299 GBP
View
B+
Retailer 9
-
$514 SGD
$402 USD
View
B
Retailer 10
-
$594 SGD
ZAR 7,508 ZAR
View
Retailer 11
-
$615 SGD
A$740 AUD
View
Price last confirmed 28 days ago
B
Retailer 12
-
$671 SGD
$525 USD
View
B
Retailer 13
-
$722 SGD
€538 EUR
View
B
Retailer 14
-
$888 SGD
£547 GBP
View
Most Expensive
NZ Jewellers
3c2e1ee6-3afa-4d52-97ed-9db54eee46b0 · Oct 27
$1,731 SGD
$1,354 USD
View
Price under review
14 more retailers have this diamond
Prices start from $276 SGDSave up to $612 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.

A
0.40ct Oval
$276 SGD