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Heart|Natural|GIA

0.40ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1567241139

Certificate GIA 1567241139

Diamond specifications and retailer prices

From £249 GBP
SGD 451 SGD
As of November 1, 2026
Save £66 GBP (21%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £315 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1567241139. Listed at 2 retailers as of November 1, 2026, with prices from £249 to £315, a £66 spread on the same certified stone. 77 Diamonds lists it at £315. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1567241139
Dimensions4.57 × 5.06 × 3.03 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
4.57 mm5.06 mm0.40 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1567241139
Side View
Table 57.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 59.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £315 GBP|Low: £249 GBP|High: £329 GBP|Avg: £303 GBP|+1.5%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2£249 GBP
77 Diamonds£315 GBP

35 data points across 2 retailers

2 retailers£249 GBP to £315 GBP

B+
Cheapest Retailer
-
£249 GBP
SGD 451 SGD
Most Expensive
B+
77 Diamonds
HSCPKMBP7GQB · Nov 1
£315 GBP
View
1 more retailer has this diamond
Prices start from £249 GBPSave up to £66 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
£249 GBP