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Cushion|Natural|GIA

1.51ct M SI2 Cushion Natural Diamond

VG • M/SI2 • GIA 5456590021

Certificate GIA 5456590021

Diamond specifications and retailer prices

From $2,023 AUD
As of November 4, 2026
Save $121 AUD (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,144 AUD at B2C Jewels · As of November 6, 2026
View at B2C Jewels

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5456590021. Listed at 2 retailers as of November 4, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
M
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5456590021
Dimensions6.22 × 6.19 × 4.41 mm
L/W Ratio1.00
Top View
6.22 mm6.19 mm1.51 ctM / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5456590021
Side View
Table 63.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: $2,144 AUD|Low: $1,978 AUD|High: $3,457 AUD|Avg: $2,597 AUD
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
November 4, 2026
Retailer 2$2,023 AUD
B2C Jewels$2,144 AUD
Retailer 4$2,774 AUD
Retailer 3$3,457 AUD

3 data points across 4 retailers

2 retailers$2,023 AUD to $2,144 AUD

B+
Cheapest Retailer
-
$2,023 AUD
Most Expensive
B+
B2C Jewels
26183700 · Nov 6
$2,144 AUD
$1,473 USD
View
1 more retailer has this diamond
Prices start from $2,023 AUDSave up to $121 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.

B+
1.51ct Cushion
$2,023 AUD