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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

VG • D/SI2 • GIA 6531506709

Certificate GIA 6531506709

Diamond specifications and retailer prices

From $425 SGD
₹31,549 INR
As of October 30, 2026
Save $884 SGD (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,303 SGD at NZ Jewellers · As of October 10, 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 D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6531506709. Listed at 15 retailers as of October 26, 2026, with a 208% 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
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 6531506709
Dimensions4.59 × 4.52 × 2.95 mm
L/W Ratio1.02
Top View
4.59 mm4.52 mm0.40 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531506709
Side View
Table 56.0%Crown 38.5°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 65.2%

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: $425 SGD|Low: $424 SGD|High: $1,429 SGD|Avg: $748 SGD|-6.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 1$425 SGD
Retailer 2$492 SGD
Retailer 6$518 SGD
Retailer 5$597 SGD
Retailer 7$610 SGD
Retailer 8$659 SGD
Retailer 3$692 SGD
Retailer 4$732 SGD
Retailer 10$842 SGD
Retailer 9$1,309 SGD

37 data points across 10 retailers

15 retailers$425 SGD to $1,309 SGD

A
Cheapest Retailer
-
$425 SGD
₹31,549 INR
A
Retailer 2
-
$492 SGD
HK$3,000 HKD
View
B+
Retailer 3
-
$518 SGD
$404 USD
View
Final sale: no returns
A
Retailer 4
-
$597 SGD
A$717 AUD
View
Retailer 5
-
$601 SGD
$469 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$610 SGD
View
Retailer 7
-
$622 SGD
$485 USD
View
Price last confirmed 14 days ago
Retailer 8
-
$622 SGD
$485 USD
View
Price last confirmed 15 days ago
A
Retailer 9
-
$659 SGD
$514 USD
View
Retailer 10
-
$666 SGD
$520 USD
View
Price last confirmed 14 days ago
A
Retailer 11
-
$692 SGD
£425 GBP
View
A
Retailer 12
-
$732 SGD
$571 USD
View
Retailer 13
-
$842 SGD
€626 EUR
View
Price last confirmed 7 days ago
B
Retailer 14
-
$1,309 SGD
£804 GBP
View
Most Expensive
NZ Jewellers
f81f937b-3614-48a9-a3d3-ecc1f4df1ab9 · Oct 10
$2,303 SGD
$1,797 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from $425 SGDSave up to $884 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
$425 SGD