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Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1519581520

Certificate GIA 1519581520

Diamond specifications and retailer prices

From $352 USD
₹33,522 INR
As of November 1, 2026
Save $434 USD (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,629 USD at MOH London · As of October 18, 2026
View at MOH London

About this 0.4ct natural heart diamond

This 0.4ct natural heart sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1519581520. Listed at 4 retailers as of November 1, 2026, with a 123% 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1519581520
Dimensions4.65 × 5.12 × 2.91 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
4.65 mm5.12 mm0.40 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1519581520
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 56.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,629 USD|Low: $351 USD|High: $1,629 USD|Avg: $859 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2$352 USD
Retailer 5$626 USD
Retailer 3$786 USD
Retailer 4$991 USD
MOH London$1,629 USD

46 data points across 5 retailers

4 retailers$352 USD to $786 USD

A
Cheapest Retailer
-
$352 USD
₹33,522 INR
B+
Retailer 2
-
$626 USD
View
B
Retailer 3
-
$786 USD
£619 GBP
View
Most Expensive
MOH London
56FD3BB9B · Oct 18
$1,629 USD
£1,283 GBP
View
Price under review
3 more retailers have this diamond
Prices start from $352 USDSave up to $434 USD

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 Heart
$352 USD