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Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 1318328824

Certificate GIA 1318328824

Diamond specifications and retailer prices

From $11,973 AUD
$8,391 USD
As of November 2, 2026
Save $9,287 AUD (44%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,260 AUD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1318328824. Listed at 21 retailers as of November 1, 2026, with prices from $11,973 to $21,260, a $9,287 spread on the same certified stone. MOH London lists it at $21,260. 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
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1318328824
Dimensions7.07 × 6.26 × 4.33 mm
L/W Ratio1.13
Top View
7.07 mm6.26 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1318328824
Side View
Table 66.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 69.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $21,260 AUD|Low: $11,344 AUD|High: $21,518 AUD|Avg: $15,412 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10$11,973 AUD
Retailer 6$12,122 AUD
Retailer 7$13,613 AUD
Retailer 8$13,613 AUD
Retailer 3$14,903 AUD
Retailer 5$14,978 AUD
Retailer 9$15,137 AUD
Retailer 2$16,347 AUD
Retailer 4$19,999 AUD
MOH London$21,260 AUD

44 data points across 10 retailers

21 retailers$11,973 AUD to $21,260 AUD

B
Cheapest Retailer
-
$11,973 AUD
$8,391 USD
B
Retailer 2
-
$12,122 AUD
$8,495 USD
View
B
Retailer 3
-
$12,595 AUD
$8,827 USD
View
B
Retailer 4
-
$12,631 AUD
$8,852 USD
View
B
Retailer 5
-
$12,960 AUD
$9,083 USD
View
B
Retailer 6
-
$13,096 AUD
CA$12,747 CAD
View
B
Retailer 7
-
$13,484 AUD
$9,450 USD
View
B
Retailer 8
-
$13,613 AUD
$9,540 USD
View
Final sale: no returns
B
Retailer 9
-
$13,613 AUD
$9,540 USD
View
B
Retailer 10
-
$13,851 AUD
$9,707 USD
View
B
Retailer 11
-
$14,903 AUD
£8,224 GBP
View
Retailer 12
-
$14,978 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$15,137 AUD
$10,608 USD
View
B
Retailer 14
-
$15,699 AUD
$11,002 USD
View
B
Retailer 15
-
$15,996 AUD
$11,210 USD
View
B
Retailer 16
-
$15,996 AUD
$11,210 USD
View
B
Retailer 17
-
$16,347 AUD
€10,911 EUR
View
B
Retailer 18
-
$16,524 AUD
$11,580 USD
View
Retailer 19
-
$17,913 AUD
$12,554 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$19,999 AUD
ZAR 226,428 ZAR
View
Most Expensive
B
MOH London
D51304D46 · Nov 1
$21,260 AUD
£11,732 GBP
View
20 more retailers have this diamond
Prices start from $11,973 AUDSave up to $9,287 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
$11,973 AUD