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Cushion|Natural|GIA

1.51ct E SI2 Cushion Natural Diamond

GD • E/SI2 • GIA 6421495236

Certificate GIA 6421495236

Diamond specifications and retailer prices

From $4,753 AUD
$3,339 USD
As of October 28, 2026
Save $2,338 AUD (33%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,091 AUD at 77 Diamonds · As of October 30, 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 E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6421495236. Listed at 12 retailers as of October 28, 2026, with prices from $4,753 to $7,091, a $2,338 spread on the same certified stone. 77 Diamonds lists it at $7,091. 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
E
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6421495236
Dimensions6.91 × 6.25 × 4.08 mm
L/W Ratio1.11
Top View
6.91 mm6.25 mm1.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6421495236
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $7,091 AUD|Low: $4,699 AUD|High: $7,107 AUD|Avg: $5,821 AUD|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 5$4,763 AUD
Retailer 3$4,840 AUD
Retailer 4$5,960 AUD
Retailer 2$6,587 AUD
77 Diamonds$7,091 AUD

41 data points across 5 retailers

12 retailers$4,753 AUD to $7,091 AUD

A
Cheapest Retailer
-
$4,753 AUD
$3,339 USD
A
Retailer 2
-
$4,763 AUD
$3,346 USD
View
A
Retailer 3
-
$4,840 AUD
$3,400 USD
View
A
Retailer 4
-
$4,869 AUD
$3,421 USD
View
B+
Retailer 5
-
$5,079 AUD
$3,568 USD
View
B+
Retailer 6
-
$5,127 AUD
View
B+
Retailer 7
-
$5,960 AUD
$4,187 USD
View
B+
Retailer 8
-
$6,320 AUD
$4,440 USD
View
B+
Retailer 9
-
$6,320 AUD
$4,440 USD
View
B+
Retailer 10
-
$6,533 AUD
$4,590 USD
View
B+
Retailer 11
-
$6,587 AUD
€4,407 EUR
View
Most Expensive
B+
77 Diamonds
CUSMBYQJVF43F · Oct 30
$7,091 AUD
£3,923 GBP
View
11 more retailers have this diamond
Prices start from $4,753 AUDSave up to $2,338 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.

A
1.51ct Cushion
$4,753 AUD