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Heart|Natural|GIA

0.50ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 6545371325

Certificate GIA 6545371325

Diamond specifications and retailer prices

From £270 GBP
As of November 6, 2026
Save £502 GBP (65%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £772 GBP at Allurez · As of November 5, 2026
View at Allurez

About this 0.5ct natural heart diamond

This 0.5ct natural heart sits in the half to three-quarter 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 6545371325. Listed at 5 retailers as of November 5, 2026, with prices from £270 to £772, a £502 spread on the same certified stone. Allurez lists it at £772. 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

0.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545371325
Dimensions5.58 × 4.78 × 3.30 mm
L/W Ratio1.17
Top View
5.58 mm4.78 mm0.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545371325
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £362 GBP|Low: £245 GBP|High: £369 GBP|Avg: £308 GBP
Retailer 1
Retailer 2
Retailer 3
November 5, 2026
Retailer 2£270 GBP
Retailer 3£288 GBP
Retailer 1£362 GBP

40 data points across 3 retailers

5 retailers£270 GBP to £772 GBP

A
Cheapest Retailer
-
£270 GBP
Final sale: no returns
A
Retailer 2
-
£288 GBP
View
B+
Retailer 3
-
£362 GBP
View
B
Retailer 4
-
£426 GBP
View
Most Expensive
C
Allurez
5230492 · Nov 5
£772 GBP
$1,034 USD
View
4 more retailers have this diamond
Prices start from £270 GBPSave up to £502 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
0.50ct Heart
£270 GBP