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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 6542448794

Certificate GIA 6542448794

Diamond specifications and retailer prices

From $4,511 AUD
HK$24,700 HKD
As of November 1, 2026
Save $5,450 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,961 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542448794. Listed at 21 retailers as of November 1, 2026, with prices from $4,511 to $9,961, a $5,450 spread on the same certified stone. MOH London lists it at $9,961. 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 6542448794
Dimensions6.61 × 6.44 × 4.39 mm
L/W Ratio1.03
Top View
6.61 mm6.44 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542448794
Side View
Table 58.0%Crown 37.4°Girdle: MED-STKPavilion 36.5°Culet: NDepth 68.2%

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: Nov 1
Current: $9,961 AUD|Low: $4,475 AUD|High: $10,186 AUD|Avg: $6,185 AUD|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 16$4,511 AUD
Retailer 19$4,553 AUD
Retailer 14$4,732 AUD
Retailer 9$4,790 AUD
Retailer 8$4,879 AUD
Retailer 7$4,981 AUD
Retailer 5$5,165 AUD
Retailer 6$5,397 AUD
Retailer 2$5,579 AUD
Retailer 4$5,636 AUD
Retailer 17$5,636 AUD
Retailer 18$5,822 AUD
Retailer 13$6,093 AUD
Retailer 12$6,739 AUD
Retailer 10$6,741 AUD
Retailer 11$6,776 AUD
Retailer 3$7,080 AUD
Retailer 15$7,322 AUD
MOH London$9,961 AUD

30 data points across 19 retailers

21 retailers$4,511 AUD to $9,961 AUD

A
Cheapest Retailer
-
$4,511 AUD
HK$24,700 HKD
A
Retailer 2
-
$4,553 AUD
$3,191 USD
View
A
Retailer 3
-
$4,732 AUD
$3,316 USD
View
A
Retailer 4
-
$4,790 AUD
$3,357 USD
View
A
Retailer 5
-
$4,879 AUD
$3,419 USD
View
A
Retailer 6
-
$4,947 AUD
View
A
Retailer 7
-
$4,981 AUD
$3,491 USD
View
Final sale: no returns
A
Retailer 8
-
$5,165 AUD
$3,620 USD
View
A
Retailer 9
-
$5,397 AUD
$3,782 USD
View
Retailer 10
-
$5,556 AUD
$3,894 USD
View
Price last confirmed 23 days ago
A
Retailer 11
-
$5,579 AUD
$3,910 USD
View
A
Retailer 12
-
$5,636 AUD
$3,950 USD
View
A
Retailer 13
-
$5,636 AUD
$3,950 USD
View
A
Retailer 14
-
$5,822 AUD
$4,080 USD
View
A
Retailer 15
-
$6,093 AUD
£3,362 GBP
View
A
Retailer 16
-
$6,739 AUD
€4,498 EUR
View
Retailer 17
-
$6,741 AUD
$4,724 USD
View
Price last confirmed 21 days ago
Retailer 18
-
$6,776 AUD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
$7,080 AUD
$4,962 USD
View
B+
Retailer 20
-
$7,322 AUD
ZAR 82,894 ZAR
View
Most Expensive
B
MOH London
DA3EB89F6 · Nov 2
$9,961 AUD
£5,497 GBP
View
20 more retailers have this diamond
Prices start from $4,511 AUDSave up to $5,450 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
$4,511 AUD