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Heart|Natural|GIA

1.33ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3545115877

Certificate GIA 3545115877

Diamond specifications and retailer prices

From $2,911 AUD
As of November 6, 2026
Save $576 AUD (17%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,487 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.33ct natural heart diamond

This 1.33ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545115877. Listed at 5 retailers as of November 5, 2026, with prices from $2,911 to $3,487, a $576 spread on the same certified stone. Blue Nile lists it at $3,487. 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

1.33
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545115877
Dimensions6.97 × 7.64 × 4.53 mm
L/W Ratio1.10
Top View
6.97 mm7.64 mm1.33 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545115877
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $3,487 AUD|Low: $2,866 AUD|High: $4,337 AUD|Avg: $3,529 AUD|-19.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$2,911 AUD
Retailer 3$2,927 AUD
Retailer 2$3,158 AUD
Retailer 5$3,339 AUD
Blue Nile$3,487 AUD
Retailer 6$4,247 AUD

42 data points across 6 retailers

5 retailers$2,911 AUD to $3,487 AUD

A
Cheapest Retailer
-
$2,911 AUD
A
Retailer 2
-
$2,927 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,158 AUD
View
A
Retailer 4
-
$3,339 AUD
View
Most Expensive
A
Blue Nile
27492901 · Nov 5
$3,487 AUD
$2,396 USD
View
4 more retailers have this diamond
Prices start from $2,911 AUDSave up to $576 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
1.33ct Heart
$2,911 AUD