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Princess|Natural|GIA

1.50ct I SI1 Princess Natural Diamond

GD • I/SI1 • GIA 6451312954

Certificate GIA 6451312954

Diamond specifications and retailer prices

From $7,905 AUD
$5,540 USD
As of November 1, 2026
Save $6,833 AUD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,732 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.5ct natural princess diamond

This 1.5ct natural princess sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6451312954. Listed at 19 retailers as of November 1, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.6°
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 6451312954
Dimensions6.25 × 6.19 × 4.50 mm
L/W Ratio1.01
Top View
6.25 mm6.19 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451312954
Side View
Table 71.0%Crown 48.6°Girdle: 3.2Pavilion 38.3°Culet: NoneDepth 72.6%

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 1
Current: $9,492 AUD|Low: $6,972 AUD|High: $14,818 AUD|Avg: $9,832 AUD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$6,972 AUD
Retailer 9$7,891 AUD
Retailer 10$8,068 AUD
Retailer 2$8,426 AUD
Retailer 3$9,062 AUD
Retailer 1$9,492 AUD
Retailer 5$9,594 AUD
Retailer 8$9,710 AUD
Retailer 4$10,291 AUD
Retailer 7$12,291 AUD
Retailer 6$14,738 AUD

31 data points across 11 retailers

19 retailers$7,905 AUD to $14,738 AUD

Retailer 1
-
$7,891 AUD
$5,530 USD
Price last confirmed 15 days ago
B+
Retailer 2
-
$7,905 AUD
$5,540 USD
View
B
Retailer 3
-
$8,068 AUD
$5,654 USD
View
B
Retailer 4
-
$8,426 AUD
$5,905 USD
View
B
Retailer 5
-
$8,511 AUD
$5,965 USD
View
Retailer 6
-
$9,062 AUD
$6,351 USD
View
Price last confirmed 34 days ago
Retailer 7
-
$9,062 AUD
$6,351 USD
View
Price last confirmed 33 days ago
B
Retailer 8
-
$9,492 AUD
£5,238 GBP
View
B
Retailer 9
-
$9,594 AUD
£5,294 GBP
View
Retailer 10
-
$9,710 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$10,088 AUD
$7,070 USD
View
B
Retailer 12
-
$10,088 AUD
$7,070 USD
View
B
Retailer 13
-
$10,236 AUD
$7,173 USD
View
B
Retailer 14
-
$10,291 AUD
€6,869 EUR
View
Retailer 15
-
$10,458 AUD
$7,329 USD
View
Price last confirmed 34 days ago
B
Retailer 16
-
$11,258 AUD
$7,890 USD
View
B
Retailer 17
-
$12,291 AUD
ZAR 139,157 ZAR
View
B
Retailer 18
-
$14,738 AUD
£8,133 GBP
View
Most Expensive
NZ Jewellers
8193489b-a8e8-4827-9c6d-e3f1a35de06d · Sep 30
$16,732 AUD
$11,726 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $7,905 AUDSave up to $6,833 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+
1.50ct Princess
$7,905 AUD