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Round|Natural|GIA

0.40ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6555817232

Certificate GIA 6555817232

Diamond specifications and retailer prices

From $281 SGD
₹20,969 INR
As of October 30, 2026
Save $603 SGD (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,594 SGD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.4ct natural round diamond

This 0.4ct natural round sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555817232. Listed at 15 retailers as of October 29, 2026, with a 214% 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

0.40
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555817232
Dimensions4.70 × 4.72 × 2.94 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
4.70 mm4.72 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555817232
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.4%

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 30
Current: $281 SGD|Low: $281 SGD|High: $973 SGD|Avg: $549 SGD|-8.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 1$281 SGD
Retailer 11$344 SGD
Retailer 9$352 SGD
Retailer 3$369 SGD
Retailer 6$446 SGD
Retailer 5$485 SGD
Retailer 4$591 SGD
Retailer 2$659 SGD
Retailer 7$671 SGD
Retailer 10$682 SGD
Retailer 8$885 SGD

33 data points across 11 retailers

15 retailers$281 SGD to $885 SGD

A
Cheapest Retailer
-
$281 SGD
₹20,969 INR
A
Retailer 2
-
$344 SGD
HK$2,100 HKD
View
A
Retailer 3
-
$352 SGD
$275 USD
View
Final sale: no returns
A
Retailer 4
-
$369 SGD
$289 USD
View
Retailer 5
-
$415 SGD
$325 USD
View
Price last confirmed 31 days ago
A
Retailer 6
-
$446 SGD
A$537 AUD
View
Retailer 7
-
$460 SGD
$360 USD
View
Price last confirmed 31 days ago
A
Retailer 8
-
$485 SGD
£299 GBP
View
Retailer 9
-
$555 SGD
$434 USD
View
Price last confirmed 31 days ago
B+
Retailer 10
-
$591 SGD
ZAR 7,468 ZAR
View
Retailer 11
-
$659 SGD
A$793 AUD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
$671 SGD
$525 USD
View
Retailer 13
-
$682 SGD
€508 EUR
View
Price last confirmed 7 days ago
B
Retailer 14
-
$885 SGD
£545 GBP
View
Most Expensive
NZ Jewellers
d0f7a1ee-0d23-4048-b9e9-fcde47431fb0 · Sep 24
$1,594 SGD
$1,247 USD
View
Price last confirmed 36 days ago
14 more retailers have this diamond
Prices start from $281 SGDSave up to $603 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 Round
$281 SGD