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Cushion|Natural|GIA

1.51ct L SI1 Cushion Natural Diamond

VG • L/SI1 • GIA 6461420538

Certificate GIA 6461420538

Diamond specifications and retailer prices

From $2,646 AUD
As of November 6, 2026
Save $1,339 AUD (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,985 AUD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6461420538. Listed at 3 retailers as of November 5, 2026, with prices from $2,646 to $3,985, a $1,339 spread on the same certified stone. 77 Diamonds lists it at $3,985. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6461420538
Dimensions6.52 × 5.93 × 4.19 mm
L/W Ratio1.10
Top View
6.52 mm5.93 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6461420538
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 70.6%

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 6
Current: $3,985 AUD|Low: $2,583 AUD|High: $4,423 AUD|Avg: $3,420 AUD|+0.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 2$2,583 AUD
Retailer 3$2,646 AUD
77 Diamonds$3,985 AUD
Retailer 4$4,423 AUD

38 data points across 4 retailers

3 retailers$2,646 AUD to $3,985 AUD

B+
Cheapest Retailer
-
$2,646 AUD
B+
Retailer 2
-
$2,752 AUD
View
Most Expensive
B
77 Diamonds
CUSMBMNVCNX3F · Nov 5
$3,985 AUD
£2,156 GBP
View
2 more retailers have this diamond
Prices start from $2,646 AUDSave up to $1,339 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
$2,646 AUD