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Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6565240308

Certificate GIA 6565240308

Diamond specifications and retailer prices

From £276 GBP
$370 USD
As of October 31, 2026
Save £96 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £372 GBP at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 6565240308. Listed at 3 retailers as of October 31, 2026, with prices from £276 to £372, a £96 spread on the same certified stone. 77 Diamonds lists it at £372. 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
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565240308
Dimensions4.53 × 5.18 × 2.90 mm
L/W Ratio1.14
Culet sizeNone
Key to symbols
Crystal
Top View
4.53 mm5.18 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 6565240308
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.0%

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: Oct 31
Current: £372 GBP|Low: £240 GBP|High: £375 GBP|Avg: £310 GBP|+11.3%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2£276 GBP
Retailer 3£295 GBP
77 Diamonds£372 GBP

39 data points across 3 retailers

3 retailers£276 GBP to £372 GBP

A
Cheapest Retailer
-
£276 GBP
$370 USD
Final sale: no returns
B+
Retailer 2
-
£295 GBP
SGD 534 SGD
View
Most Expensive
B+
77 Diamonds
HSCPFTJQAZC3 · Nov 1
£372 GBP
View
2 more retailers have this diamond
Prices start from £276 GBPSave up to £96 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.

A
0.40ct Heart
£276 GBP