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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 $1,390 USD
As of November 4, 2026
Save $83 USD (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,473 USD 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
Color
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: $1,473 USD|Low: $1,359 USD|High: $2,375 USD|Avg: $1,784 USD
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
November 4, 2026
Retailer 2$1,390 USD
B2C Jewels$1,473 USD
Retailer 4$1,906 USD
Retailer 3$2,375 USD

3 data points across 4 retailers

2 retailers$1,390 USD to $1,473 USD

B+
Cheapest Retailer
-
$1,390 USD
Most Expensive
B+
B2C Jewels
26183700 · Nov 6
$1,473 USD
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1 more retailer has this diamond
Prices start from $1,390 USDSave up to $83 USD

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
$1,390 USD