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Cushion|Natural|GIA

1.51ct M SI1 Cushion Natural Diamond

EX • M/SI1 • GIA 6565590044

Certificate GIA 6565590044

Diamond specifications and retailer prices

From $2,030 AUD
As of November 6, 2026
Save $1,824 AUD (47%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,854 AUD at Diamonds Direct · As of November 6, 2026
View at Diamonds Direct

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded M 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 6565590044. Listed at 3 retailers as of November 6, 2026, with prices from $2,030 to $3,854, a $1,824 spread on the same certified stone. Diamonds Direct lists it at $3,854. 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
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565590044
Dimensions6.56 × 6.47 × 4.43 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather
Top View
6.56 mm6.47 mm1.51 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565590044
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCuletDepth 68.6%

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: $3,854 AUD|Low: $2,011 AUD|High: $3,854 AUD|Avg: $2,819 AUD
Diamonds Direct
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$2,030 AUD
Retailer 2$2,751 AUD
Diamonds Direct$3,854 AUD

11 data points across 3 retailers

3 retailers$2,030 AUD to $3,854 AUD

A
Cheapest Retailer
-
$2,030 AUD
B+
Retailer 2
-
$2,751 AUD
View
Most Expensive
B+
Diamonds Direct
1150004 · Nov 6
$3,854 AUD
$2,648 USD
View
2 more retailers have this diamond
Prices start from $2,030 AUDSave up to $1,824 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
$2,030 AUD