Heart|Natural|GIA

3.09ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 6505779740

Shape and cutting style on the report: Heart modified brilliant

Certificate GIA 6505779740

Diamond specifications and retailer prices

From £15,282 GBP
As of November 4, 2026
Save £6,706 GBP (30%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £22,162 GBP at Aurelinne · As of September 29, 2026
View at Aurelinne

About this 3.09ct natural heart diamond

This 3.09ct natural heart sits in the three to five carat band, graded H 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 6505779740. Listed at 14 retailers as of November 4, 2026, with a 44% 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

3.09
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6505779740
Dimensions11.59 × 11.09 × 2.98 mm
L/W Ratio1.05
Top View
11.59 mm11.09 mm3.09 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505779740
Side View
Table 69.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth

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 4
Current: £19,274 GBP|Low: £15,282 GBP|High: £25,282 GBP|Avg: £19,631 GBP|-13.0%
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11£15,282 GBP
Retailer 13£16,064 GBP
Retailer 3£16,207 GBP
Retailer 7£16,418 GBP
Retailer 12£16,556 GBP
Retailer 10£18,168 GBP
Retailer 5£18,277 GBP
Retailer 4£18,371 GBP
Retailer 9£18,560 GBP
Retailer 6£18,726 GBP
Retailer 2£19,055 GBP
Aurelinne£19,274 GBP
Retailer 8£21,988 GBP

35 data points across 13 retailers

14 retailers£15,282 GBP to £21,988 GBP

A
Cheapest Retailer
-
£15,282 GBP
B+
Retailer 2
-
£16,064 GBP
View
B+
Retailer 3
-
£16,207 GBP
View
B+
Retailer 4
-
£16,418 GBP
View
Final sale: no returns
B+
Retailer 5
-
£16,556 GBP
View
B+
Retailer 6
-
£18,168 GBP
View
Retailer 7
-
£18,277 GBP
View
Price last confirmed 33 days ago
Retailer 8
-
£18,371 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£18,560 GBP
View
B+
Retailer 10
-
£18,726 GBP
View
B+
Retailer 11
-
£19,055 GBP
View
B+
Retailer 12
-
£19,274 GBP
View
B
Retailer 13
-
£21,988 GBP
View
Most Expensive
Aurelinne
84924856-dc5e-409d-b26e-0e63bb78abe9 · Sep 29
£22,162 GBP
$29,663 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from £15,282 GBPSave up to £6,706 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
3.09ct Heart
£15,282 GBP