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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6535460829

Certificate GIA 6535460829

Diamond specifications and retailer prices

From $3,400 AUD
As of November 4, 2026
Save $10,696 AUD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,096 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535460829. Listed at 16 retailers as of November 4, 2026, with prices from $3,400 to $14,096, a $10,696 spread on the same certified stone. Wholesale Diamonds Direct lists it at $14,096. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6535460829
Dimensions7.38 × 7.33 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.38 mm7.33 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535460829
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

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 4
Current: $9,974 AUD|Low: $3,400 AUD|High: $14,096 AUD|Avg: $7,097 AUD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Wholesale Diamonds Direct
November 6, 2026
Retailer 15$3,400 AUD
Retailer 7$3,813 AUD
Retailer 13$3,953 AUD
Retailer 14$4,106 AUD
Retailer 6$4,110 AUD
Retailer 8$4,470 AUD
Retailer 16$4,561 AUD
Retailer 9$7,211 AUD
Retailer 17$8,201 AUD
Retailer 10$8,228 AUD
Retailer 12$8,265 AUD
Retailer 18$9,175 AUD
Retailer 2$9,291 AUD
Retailer 3$9,814 AUD
Retailer 4$9,814 AUD
Retailer 11$9,947 AUD
Retailer 1$9,974 AUD
Retailer 5$10,142 AUD
Wholesale Diamonds Direct$14,096 AUD

28 data points across 19 retailers

16 retailers$3,400 AUD to $14,096 AUD

A
Cheapest Retailer
-
$3,400 AUD
A
Retailer 2
-
$3,813 AUD
View
A
Retailer 3
-
$3,953 AUD
View
A
Retailer 4
-
$4,106 AUD
View
Retailer 5
-
$4,110 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$4,561 AUD
View
B+
Retailer 7
-
$8,201 AUD
View
B+
Retailer 8
-
$8,265 AUD
View
B+
Retailer 9
-
$9,175 AUD
View
B+
Retailer 10
-
$9,291 AUD
View
B
Retailer 11
-
$9,814 AUD
View
B
Retailer 12
-
$9,814 AUD
View
B+
Retailer 13
-
$9,947 AUD
View
B+
Retailer 14
-
$9,974 AUD
View
B
Retailer 15
-
$10,142 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
623164163 · Nov 6
$14,096 AUD
$9,868 USD
View
15 more retailers have this diamond
Prices start from $3,400 AUDSave up to $10,696 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 Round
$3,400 AUD