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Radiant|Natural|GIA

1.50ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 6555386165

Certificate GIA 6555386165

Diamond specifications and retailer prices

From $8,228 AUD
$5,766 USD
As of November 2, 2026
Save $7,247 AUD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $15,475 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded F 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 6555386165. Listed at 9 retailers as of October 30, 2026, with prices from $8,228 to $15,475, a $7,247 spread on the same certified stone. NZ Jewellers lists it at $15,475. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle52.82°
Pavilion angle37.2°
OriginNatural
Grading LabGIA
CertificateGIA 6555386165
Dimensions7.41 × 5.78 × 4.00 mm
L/W Ratio1.28
Girdle conditionVery Thick
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.41 mm5.78 mm1.50 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555386165
Side View
Table 73.0%Crown 52.82°Girdle: THK-VTKPavilion 37.2°CuletDepth 69.1%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $15,475 AUD|Low: $7,320 AUD|High: $16,435 AUD|Avg: $9,741 AUD|-5.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 13$7,320 AUD
Retailer 3$8,049 AUD
Retailer 10$8,228 AUD
Retailer 9$8,597 AUD
Retailer 6$8,656 AUD
Retailer 11$8,833 AUD
Retailer 5$8,922 AUD
Retailer 12$9,058 AUD
Retailer 2$9,252 AUD
Retailer 7$9,252 AUD
Retailer 4$9,747 AUD
Retailer 8$13,631 AUD
NZ Jewellers$15,475 AUD

20 data points across 13 retailers

9 retailers$8,228 AUD to $15,475 AUD

Retailer 1
-
$7,320 AUD
$5,130 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$8,228 AUD
$5,766 USD
View
A
Retailer 3
-
$8,597 AUD
$6,025 USD
View
A
Retailer 4
-
$8,656 AUD
£4,777 GBP
View
A
Retailer 5
-
$8,833 AUD
$6,190 USD
View
B+
Retailer 6
-
$9,252 AUD
$6,484 USD
View
B+
Retailer 7
-
$9,252 AUD
$6,484 USD
View
B
Retailer 8
-
$13,631 AUD
£7,522 GBP
View
Most Expensive
B
NZ Jewellers
c2bcb785-9426-42a7-81cc-f3d64e6561b1 · Oct 30
$15,475 AUD
$10,845 USD
View
8 more retailers have this diamond
Prices start from $8,228 AUDSave up to $7,247 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
1.50ct Radiant
$8,228 AUD