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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7553994445

Certificate GIA 7553994445

Diamond specifications and retailer prices

From $6,638 AUD
As of November 6, 2026
Save $2,793 AUD (30%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,431 AUD at Jared · As of November 6, 2026
View at Jared

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553994445. Listed at 9 retailers as of November 6, 2026, with prices from $6,638 to $9,431, a $2,793 spread on the same certified stone. Jared lists it at $9,431. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7553994445
Dimensions7.26 × 7.30 × 4.60 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Needle
Top View
7.26 mm7.30 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7553994445
Side View
Table 57.0%Crown 35°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 63.2%

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 6
Current: $9,431 AUD|Low: $6,638 AUD|High: $9,431 AUD|Avg: $8,151 AUD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$6,638 AUD
Retailer 5$7,634 AUD
Retailer 7$7,984 AUD
Retailer 3$8,224 AUD
Retailer 9$8,427 AUD
Retailer 8$8,548 AUD
Retailer 4$9,125 AUD
Retailer 6$9,125 AUD
Jared$9,431 AUD

45 data points across 9 retailers

9 retailers$6,638 AUD to $9,431 AUD

A
Cheapest Retailer
-
$6,638 AUD
A
Retailer 2
-
$7,634 AUD
View
B+
Retailer 3
-
$7,984 AUD
View
B+
Retailer 4
-
$8,224 AUD
View
B+
Retailer 5
-
$8,427 AUD
View
B+
Retailer 6
-
$8,548 AUD
View
B+
Retailer 7
-
$9,125 AUD
View
B+
Retailer 8
-
$9,125 AUD
View
Most Expensive
B+
Jared
160181293 · Nov 6
$9,431 AUD
$6,480 USD
View
8 more retailers have this diamond
Prices start from $6,638 AUDSave up to $2,793 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
$6,638 AUD