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Heart|Natural|GIA

3.00ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 121

Certificate GIA 121

Diamond specifications and retailer prices

From £19,989 GBP
$26,619 USD
As of October 28, 2026
Save £2,518 GBP (11%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £22,508 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3ct natural heart diamond

This 3ct natural heart sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 2 retailers as of October 28, 2026, with a relatively tight 13% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 121
Dimensions8.91 × 10.11 × 6.02 mm
L/W Ratio1.13
Top View
8.91 mm10.11 mm3.00 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 121
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: £22,508 GBP|Low: £19,989 GBP|High: £25,608 GBP|Avg: £22,817 GBP|-12.1%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2£19,989 GBP
Blue Nile£22,508 GBP

13 data points across 2 retailers

2 retailers£19,989 GBP to £22,508 GBP

A
Cheapest Retailer
-
£19,989 GBP
$26,619 USD
Most Expensive
B+
Blue Nile
30063378 · Oct 29
£22,508 GBP
$29,973 USD
View
1 more retailer has this diamond
Prices start from £19,989 GBPSave up to £2,518 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
3.00ct Heart
£19,989 GBP