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Radiant|Natural|GIA

1.54ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 1

Certificate GIA 1

Diamond specifications and retailer prices

From $13,728 AUD
$9,621 USD
As of November 2, 2026
Save $3,586 AUD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $17,314 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.54ct natural radiant diamond

This 1.54ct natural radiant 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 $13,728 to $17,314, a $3,586 spread on the same certified stone. Blue Nile lists it at $17,314. 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

1.54
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1
Dimensions7.43 × 5.66 × 3.92 mm
L/W Ratio1.31
Top View
7.43 mm5.66 mm1.54 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1
Side View
Table 67.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 69.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $17,314 AUD|Low: $13,564 AUD|High: $26,044 AUD|Avg: $18,125 AUD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 2$13,728 AUD
Retailer 6$14,914 AUD
Retailer 3$16,929 AUD
Blue Nile$17,314 AUD
Retailer 5$19,533 AUD
Retailer 4$26,044 AUD

3 data points across 6 retailers

3 retailers$13,728 AUD to $17,314 AUD

B+
Cheapest Retailer
-
$13,728 AUD
$9,621 USD
B+
Retailer 2
-
$14,914 AUD
$10,452 USD
View
Most Expensive
B
Blue Nile
285437 · Oct 31
$17,314 AUD
$12,134 USD
View
2 more retailers have this diamond
Prices start from $13,728 AUDSave up to $3,586 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+
1.54ct Radiant
$13,728 AUD