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Cushion|Natural|GIA

1.54ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2556151788

Certificate GIA 2556151788

Diamond specifications and retailer prices

From $5,065 USD
A$7,792 AUD
As of November 2, 2026
Save $1,351 USD (21%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $6,416 USD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.54ct natural cushion diamond

This 1.54ct natural cushion 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 stated by the retailer rather than the lab and certified by GIA 2556151788. Listed at 2 retailers as of November 1, 2026, with prices from $5,065 to $6,416, a $1,351 spread on the same certified stone. 77 Diamonds lists it at $6,416. 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

1.54
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556151788
Dimensions6.95 × 6.33 × 4.28 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Needle, Pinpoint
Top View
6.95 mm6.33 mm1.54 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556151788
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,416 USD|Low: $5,064 USD|High: $6,457 USD|Avg: $5,734 USD|+1.8%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2$5,064 USD
77 Diamonds$6,416 USD

34 data points across 2 retailers

2 retailers$5,065 USD to $6,416 USD

B+
Cheapest Retailer
-
$5,065 USD
A$7,792 AUD
Most Expensive
B
77 Diamonds
CUSZ6HXCNVRY · Nov 1
$6,416 USD
£5,052 GBP
View
1 more retailer has this diamond
Prices start from $5,065 USDSave up to $1,351 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+
1.54ct Cushion
$5,065 USD