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Heart|Natural|GIA

1.53ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 288

Certificate GIA 288

Diamond specifications and retailer prices

From $14,556 AUD
$10,225 USD
As of October 31, 2026
Save $3,761 AUD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $18,317 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.53ct natural heart diamond

This 1.53ct natural heart sits in the one-and-a-half to two carat band, graded D 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 3 retailers as of October 31, 2026, with prices from $14,556 to $18,317, a $3,761 spread on the same certified stone. Blue Nile lists it at $18,317. 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

1.53
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 288
Dimensions7.13 × 8.05 × 4.62 mm
L/W Ratio1.13
Top View
7.13 mm8.05 mm1.53 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 288
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $18,317 AUD|Low: $14,556 AUD|High: $18,317 AUD|Avg: $15,822 AUD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2$14,556 AUD
Retailer 3$15,839 AUD
Blue Nile$18,317 AUD

2 data points across 3 retailers

3 retailers$14,556 AUD to $18,317 AUD

B
Cheapest Retailer
-
$14,556 AUD
$10,225 USD
B
Retailer 2
-
$15,839 AUD
$11,126 USD
View
Most Expensive
B
Blue Nile
17218545 · Oct 31
$18,317 AUD
$12,867 USD
View
2 more retailers have this diamond
Prices start from $14,556 AUDSave up to $3,761 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
1.53ct Heart
$14,556 AUD