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Cushion|Natural|GIA

1.51ct L SI2 Cushion Natural Diamond

GD • L/SI2 • GIA 2554510619

Certificate GIA 2554510619

Diamond specifications and retailer prices

From $3,368 AUD
As of November 6, 2026
Save $1,263 AUD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,630 AUD at Yorxs · As of November 6, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554510619. Listed at 8 retailers as of November 6, 2026, with prices from $3,368 to $4,630, a $1,263 spread on the same certified stone. Yorxs lists it at $4,630. 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
L
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554510619
Dimensions7.83 × 5.81 × 4.02 mm
L/W Ratio1.35
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
7.83 mm5.81 mm1.51 ctL / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554510619
Side View
Table 67.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $3,765 AUD|Low: $3,099 AUD|High: $4,658 AUD|Avg: $3,771 AUD|+6.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 6, 2026
Retailer 6$3,368 AUD
Retailer 4$3,510 AUD
Retailer 3$3,729 AUD
Retailer 1$3,765 AUD
Retailer 7$3,873 AUD
Retailer 5$3,932 AUD
Retailer 2$3,946 AUD
Yorxs$4,630 AUD

43 data points across 8 retailers

8 retailers$3,368 AUD to $4,630 AUD

B+
Cheapest Retailer
-
$3,368 AUD
B+
Retailer 2
-
$3,510 AUD
View
Retailer 3
-
$3,729 AUD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$3,765 AUD
View
B
Retailer 5
-
$3,873 AUD
View
B
Retailer 6
-
$3,932 AUD
View
B
Retailer 7
-
$3,946 AUD
View
Most Expensive
C
Yorxs
3EB0BD655 · Nov 6
$4,630 AUD
€3,030 EUR
View
7 more retailers have this diamond
Prices start from $3,368 AUDSave up to $1,263 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
$3,368 AUD