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Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 6223478055

Certificate GIA 6223478055

Diamond specifications and retailer prices

From $12,283 AUD
$8,608 USD
As of November 2, 2026
Save $9,534 AUD (44%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,817 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 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 6223478055. Listed at 21 retailers as of November 2, 2026, with prices from $12,283 to $21,817, a $9,534 spread on the same certified stone. MOH London lists it at $21,817. 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
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6223478055
Dimensions7.39 × 6.12 × 4.26 mm
L/W Ratio1.21
Top View
7.39 mm6.12 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6223478055
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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: $21,817 AUD|Low: $11,641 AUD|High: $22,079 AUD|Avg: $15,849 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$12,283 AUD
Retailer 6$12,435 AUD
Retailer 7$13,969 AUD
Retailer 8$13,969 AUD
Retailer 3$15,297 AUD
Retailer 5$15,376 AUD
Retailer 2$16,786 AUD
Retailer 4$20,522 AUD
MOH London$21,817 AUD

43 data points across 9 retailers

21 retailers$12,283 AUD to $21,817 AUD

B
Cheapest Retailer
-
$12,283 AUD
$8,608 USD
B
Retailer 2
-
$12,435 AUD
$8,715 USD
View
B
Retailer 3
-
$12,931 AUD
$9,062 USD
View
B
Retailer 4
-
$12,962 AUD
$9,084 USD
View
B
Retailer 5
-
$13,305 AUD
$9,325 USD
View
B
Retailer 6
-
$13,445 AUD
CA$13,087 CAD
View
B
Retailer 7
-
$13,827 AUD
$9,690 USD
View
B
Retailer 8
-
$13,969 AUD
$9,790 USD
View
Final sale: no returns
B
Retailer 9
-
$13,969 AUD
$9,790 USD
View
B
Retailer 10
-
$14,213 AUD
$9,961 USD
View
B
Retailer 11
-
$15,297 AUD
£8,442 GBP
View
Retailer 12
-
$15,376 AUD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$15,522 AUD
$10,878 USD
View
B
Retailer 14
-
$16,118 AUD
$11,296 USD
View
B
Retailer 15
-
$16,395 AUD
$11,490 USD
View
B
Retailer 16
-
$16,395 AUD
$11,490 USD
View
B
Retailer 17
-
$16,543 AUD
$11,594 USD
View
B
Retailer 18
-
$16,786 AUD
€11,204 EUR
View
B
Retailer 19
-
$16,937 AUD
$11,870 USD
View
B
Retailer 20
-
$20,522 AUD
ZAR 232,351 ZAR
View
Most Expensive
B
MOH London
43546BE74 · Nov 2
$21,817 AUD
£12,039 GBP
View
20 more retailers have this diamond
Prices start from $12,283 AUDSave up to $9,534 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
$12,283 AUD