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Oval|Natural|GIA

0.40ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 1455620790

Certificate GIA 1455620790

Diamond specifications and retailer prices

From $588 SGD
$460 USD
As of October 31, 2026
Save $592 SGD (50%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,950 SGD at NZ Jewellers · As of September 28, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1455620790. Listed at 12 retailers as of October 29, 2026, with a 101% 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1455620790
Dimensions6.28 × 4.14 × 2.45 mm
L/W Ratio1.52
Key to symbols
Feather, Crystal
Top View
6.28 mm4.14 mm0.40 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1455620790
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 59.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $659 SGD|Low: $548 SGD|High: $1,188 SGD|Avg: $787 SGD|+6.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7$555 SGD
Retailer 5$588 SGD
Retailer 1$659 SGD
Retailer 3$789 SGD
Retailer 6$815 SGD
Retailer 2$924 SGD
Retailer 4$1,180 SGD

43 data points across 7 retailers

12 retailers$588 SGD to $1,180 SGD

Retailer 1
-
$509 SGD
$398 USD
Price last confirmed 23 days ago
Retailer 2
-
$548 SGD
$429 USD
View
Price last confirmed 23 days ago
Retailer 3
-
$548 SGD
$429 USD
View
Price last confirmed 32 days ago
Retailer 4
-
$587 SGD
$459 USD
View
Price last confirmed 32 days ago
B
Retailer 5
-
$588 SGD
$460 USD
View
B
Retailer 6
-
$605 SGD
HK$3,700 HKD
View
B
Retailer 7
-
$659 SGD
£406 GBP
View
B
Retailer 8
-
$789 SGD
ZAR 9,968 ZAR
View
Retailer 9
-
$815 SGD
A$981 AUD
View
Price last confirmed 26 days ago
C
Retailer 10
-
$924 SGD
€688 EUR
View
C
Retailer 11
-
$1,180 SGD
£727 GBP
View
Most Expensive
NZ Jewellers
d1774ce2-a9f8-4b04-b770-22f93ce4c4c6 · Sep 28
$1,950 SGD
$1,525 USD
View
Price under review
11 more retailers have this diamond
Prices start from $588 SGDSave up to $592 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
0.40ct Oval
$588 SGD