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Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 6522970143

Certificate GIA 6522970143

Diamond specifications and retailer prices

From $6,426 AUD
As of November 5, 2026
Save $7,332 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,758 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural princess diamond

This 1.51ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6522970143. Listed at 20 retailers as of November 5, 2026, with prices from $6,426 to $13,758, a $7,332 spread on the same certified stone. NZ Jewellers lists it at $13,758. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle23.6°
Pavilion angle39.98°
OriginNatural
Grading LabGIA
CertificateGIA 6522970143
Dimensions6.29 × 6.28 × 4.51 mm
L/W Ratio1.00
Top View
6.29 mm6.28 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522970143
Side View
Table 74.0%Crown 23.6°Girdle: STK-THKPavilion 39.98°Culet: NoneDepth 71.8%

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 5
Current: $6,811 AUD|Low: $5,958 AUD|High: $13,257 AUD|Avg: $8,704 AUD|+8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$6,498 AUD
Retailer 1$6,811 AUD
Retailer 10$6,999 AUD
Retailer 3$7,452 AUD
Retailer 5$7,945 AUD
Retailer 11$8,270 AUD
Retailer 7$8,516 AUD
Retailer 9$9,076 AUD
Retailer 4$9,166 AUD
Retailer 6$10,035 AUD
Retailer 8$13,065 AUD

46 data points across 11 retailers

20 retailers$6,426 AUD to $13,758 AUD

A
Cheapest Retailer
-
$6,426 AUD
A
Retailer 2
-
$6,498 AUD
View
B+
Retailer 3
-
$6,779 AUD
View
B+
Retailer 4
-
$6,811 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,999 AUD
View
B+
Retailer 6
-
$7,000 AUD
View
B+
Retailer 7
-
$7,377 AUD
View
Retailer 8
-
$7,452 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$7,452 AUD
View
B+
Retailer 10
-
$7,452 AUD
View
B+
Retailer 11
-
$7,651 AUD
View
B+
Retailer 12
-
$7,945 AUD
View
B+
Retailer 13
-
$8,168 AUD
View
Retailer 14
-
$8,270 AUD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$8,516 AUD
View
B
Retailer 16
-
$9,111 AUD
View
B+
Retailer 17
-
$9,166 AUD
View
B+
Retailer 18
-
$10,035 AUD
View
B
Retailer 19
-
$13,065 AUD
View
Most Expensive
B
NZ Jewellers
5274aeab-c718-48bf-9f4e-8a8ecabfa146 · Nov 5
$13,758 AUD
$9,453 USD
View
19 more retailers have this diamond
Prices start from $6,426 AUDSave up to $7,332 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
1.51ct Princess
$6,426 AUD