CaratHunter
Plans
Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6462828005

Certificate GIA 6462828005

Diamond specifications and retailer prices

From £337 GBP
$451 USD
As of November 1, 2026
Save £440 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,289 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 6462828005. Listed at 8 retailers as of November 1, 2026, with a 131% 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
PolishGood
SymmetryFair
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6462828005
Dimensions4.06 × 4.89 × 3.09 mm
L/W Ratio1.20
Top View
4.06 mm4.89 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishGood
SymmetryFair
FluorescenceNone
CertificateGIA 6462828005
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 63.3%

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: Nov 1
Current: £1,289 GBP|Low: £337 GBP|High: £1,289 GBP|Avg: £533 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6£337 GBP
Retailer 5£362 GBP
Retailer 8£362 GBP
Retailer 9£371 GBP
Retailer 4£384 GBP
Retailer 7£388 GBP
Retailer 2£418 GBP
Retailer 3£776 GBP
NZ Jewellers£1,289 GBP

43 data points across 9 retailers

8 retailers£337 GBP to £776 GBP

B+
Cheapest Retailer
-
£337 GBP
$451 USD
B+
Retailer 2
-
£362 GBP
$485 USD
View
B+
Retailer 3
-
£362 GBP
$485 USD
View
B+
Retailer 4
-
£384 GBP
$515 USD
View
B+
Retailer 5
-
£388 GBP
$520 USD
View
B+
Retailer 6
-
£418 GBP
View
C
Retailer 7
-
£776 GBP
View
Most Expensive
NZ Jewellers
ea6b1f3b-ed65-4590-87bb-c0d51f13615c · Oct 30
£1,289 GBP
$1,727 USD
View
Price under review
7 more retailers have this diamond
Prices start from £337 GBPSave up to £440 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
£337 GBP