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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 $37,895 AUD
$26,619 USD
As of October 31, 2026
Save $4,774 AUD (11%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $42,670 AUD at Blue Nile · As of October 31, 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 31, 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 31
Current: $42,670 AUD|Low: $37,895 AUD|High: $48,548 AUD|Avg: $43,255 AUD|-12.1%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2$37,895 AUD
Blue Nile$42,670 AUD

13 data points across 2 retailers

2 retailers$37,895 AUD to $42,670 AUD

A
Cheapest Retailer
-
$37,895 AUD
$26,619 USD
Most Expensive
B+
Blue Nile
30063378 · Oct 31
$42,670 AUD
$29,973 USD
View
1 more retailer has this diamond
Prices start from $37,895 AUDSave up to $4,774 AUD

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
$37,895 AUD