Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 5416976610

Certificate GIA 5416976610

Diamond specifications and retailer prices

From £437 GBP
$585 USD
As of October 29, 2026
Save £311 GBP (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,119 GBP at MOH London · As of October 29, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 5416976610. Listed at 21 retailers as of October 29, 2026, with a 71% 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5416976610
Dimensions5.12 × 4.42 × 2.57 mm
L/W Ratio1.16
Top View
5.12 mm4.42 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5416976610
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,119 GBP|Low: £437 GBP|High: £1,511 GBP|Avg: £708 GBP|+0.4%
MOH London
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
October 31, 2026
Retailer 4£437 GBP
Retailer 11£470 GBP
Retailer 13£470 GBP
Retailer 3£478 GBP
Retailer 6£504 GBP
Retailer 14£512 GBP
Retailer 10£582 GBP
Retailer 2£589 GBP
Retailer 8£661 GBP
Retailer 9£725 GBP
Retailer 7£747 GBP
Retailer 12£987 GBP
MOH London£1,119 GBP
Retailer 5£1,511 GBP

44 data points across 14 retailers

21 retailers£437 GBP to £747 GBP

B+
Cheapest Retailer
-
£437 GBP
$585 USD
B+
Retailer 2
-
£452 GBP
$605 USD
View
B
Retailer 3
-
£470 GBP
$630 USD
View
B
Retailer 4
-
£470 GBP
$630 USD
View
B
Retailer 5
-
£478 GBP
$641 USD
View
B
Retailer 6
-
£499 GBP
$668 USD
View
B
Retailer 7
-
£504 GBP
$675 USD
View
B
Retailer 8
-
£512 GBP
$686 USD
View
B
Retailer 9
-
£520 GBP
$697 USD
View
B
Retailer 10
-
£552 GBP
$740 USD
View
B
Retailer 11
-
£552 GBP
$740 USD
View
B
Retailer 12
-
£575 GBP
$770 USD
View
B
Retailer 13
-
£582 GBP
$780 USD
View
B
Retailer 14
-
£589 GBP
View
B
Retailer 15
-
£661 GBP
View
B
Retailer 16
-
£670 GBP
$898 USD
View
Retailer 17
-
£725 GBP
A$1,494 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
£747 GBP
ZAR 16,178 ZAR
View
Retailer 19
-
£987 GBP
View
Price last confirmed 32 days ago
Most Expensive
MOH London
65BF858FB · Oct 29
£1,119 GBP
View
Price under review
19 more retailers have this diamond
Prices start from £437 GBPSave up to £311 GBP

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 Heart
£437 GBP