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Cushion|Natural|GIA

1.51ct L SI1 Cushion Natural Diamond

EX • L/SI1 • GIA 1545440058

Certificate GIA 1545440058

Diamond specifications and retailer prices

From $3,246 AUD
As of November 6, 2026
Save $1,761 AUD (35%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,006 AUD at Yorxs · As of November 3, 2026
View at Yorxs

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545440058. Listed at 4 retailers as of November 3, 2026, with prices from $3,246 to $5,006, a $1,761 spread on the same certified stone. Yorxs lists it at $5,006. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545440058
Dimensions8.11 × 5.70 × 3.84 mm
L/W Ratio1.42
Key to symbols
Feather, Crystal, Needle, Natural
Top View
8.11 mm5.70 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545440058
Side View
Table 65.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $3,246 AUD|Low: $3,246 AUD|High: $5,196 AUD|Avg: $4,277 AUD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 6, 2026
Retailer 1$3,246 AUD
Retailer 3$3,924 AUD
Retailer 2$4,545 AUD
Yorxs$5,006 AUD

44 data points across 4 retailers

4 retailers$3,246 AUD to $5,006 AUD

A
Cheapest Retailer
-
$3,246 AUD
B+
Retailer 2
-
$3,924 AUD
View
B
Retailer 3
-
$4,545 AUD
View
Most Expensive
B
Yorxs
F0083F818 · Nov 3
$5,006 AUD
€3,276 EUR
View
3 more retailers have this diamond
Prices start from $3,246 AUDSave up to $1,761 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 Cushion
$3,246 AUD