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Heart|Natural|GIA

1.51ct L SI1 Heart Natural Diamond

EX • L/SI1 • GIA 3545649149

Certificate GIA 3545649149

Diamond specifications and retailer prices

From $4,491 AUD
As of November 6, 2026
3 retailers carry this diamond
Most expensive: $5,095 AUD at Cape Diamonds · As of September 30, 2026
View at Cape Diamonds

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545649149. Listed at 3 retailers as of November 6, 2026. 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

1.51
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3545649149
Dimensions7.30 × 7.74 × 4.45 mm
L/W Ratio1.06
Top View
7.30 mm7.74 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3545649149
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $5,095 AUD|Low: $3,184 AUD|High: $5,448 AUD|Avg: $4,254 AUD|-6.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 1, 2026
Retailer 4$3,184 AUD
Retailer 3$3,473 AUD
Retailer 6$3,979 AUD
Retailer 10$4,117 AUD
Retailer 7$4,133 AUD
Retailer 5$4,426 AUD
Retailer 8$4,432 AUD
Retailer 9$4,491 AUD
Retailer 2$4,880 AUD
Cape Diamonds$5,095 AUD

9 data points across 10 retailers

3 retailers

Retailer 1
-
$3,184 AUD
Price last confirmed 39 days ago
B
Retailer 2
-
$4,491 AUD
View
Most Expensive
Cape Diamonds
cert_3545649149 · Sep 30
$5,095 AUD
ZAR 56,554 ZAR
View
Price last confirmed 37 days ago
2 more retailers have this diamond
Prices start from $4,491 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.

B
1.51ct Heart
$4,491 AUD