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Heart|Natural|GIA

3.03ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 6542825428

Certificate GIA 6542825428

Diamond specifications and retailer prices

From £10,356 GBP
As of November 5, 2026
Save £9,365 GBP (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £19,721 GBP at With Clarity · As of November 6, 2026
View at With Clarity

About this 3.03ct natural heart diamond

This 3.03ct natural heart sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542825428. Listed at 17 retailers as of November 5, 2026, with prices from £10,356 to £19,721, a £9,365 spread on the same certified stone. With Clarity lists it at £19,721. 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

3.03
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.47°
Pavilion angle43.16°
OriginNatural
Grading LabGIA
CertificateGIA 6542825428
Dimensions8.92 × 9.89 × 5.90 mm
L/W Ratio1.11
Top View
8.92 mm9.89 mm3.03 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542825428
Side View
Table 59.0%Crown 35.47°Girdle: MED-THKPavilion 43.16°Culet: NoneDepth 59.7%

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 5
Current: £11,670 GBP|Low: £10,356 GBP|High: £19,801 GBP|Avg: £13,374 GBP|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
With Clarity
November 6, 2026
Retailer 15£10,356 GBP
Retailer 7£10,838 GBP
Retailer 8£10,876 GBP
Retailer 9£11,350 GBP
Retailer 6£11,550 GBP
Retailer 1£11,670 GBP
Retailer 3£11,997 GBP
Retailer 14£12,230 GBP
Retailer 5£13,041 GBP
Retailer 2£13,245 GBP
Retailer 13£13,754 GBP
Retailer 11£13,861 GBP
Retailer 12£14,750 GBP
Retailer 10£15,348 GBP
Retailer 16£17,320 GBP
Retailer 4£19,042 GBP
With Clarity£19,721 GBP

27 data points across 17 retailers

17 retailers£10,356 GBP to £19,721 GBP

A
Cheapest Retailer
-
£10,356 GBP
A
Retailer 2
-
£10,838 GBP
View
A
Retailer 3
-
£10,876 GBP
View
B+
Retailer 4
-
£11,350 GBP
View
B+
Retailer 5
-
£11,550 GBP
View
B+
Retailer 6
-
£11,670 GBP
View
Final sale: no returns
B+
Retailer 7
-
£11,997 GBP
View
B+
Retailer 8
-
£12,230 GBP
View
B+
Retailer 9
-
£13,041 GBP
View
B+
Retailer 10
-
£13,245 GBP
View
B+
Retailer 11
-
£13,754 GBP
View
B+
Retailer 12
-
£13,861 GBP
View
B
Retailer 13
-
£14,750 GBP
View
B
Retailer 14
-
£15,348 GBP
View
B
Retailer 15
-
£17,320 GBP
View
B
Retailer 16
-
£19,042 GBP
View
Most Expensive
B
With Clarity
6542825428 · Nov 6
£19,721 GBP
$26,397 USD
View
16 more retailers have this diamond
Prices start from £10,356 GBPSave up to £9,365 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
3.03ct Heart
£10,356 GBP