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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 2377724079

Certificate GIA 2377724079

Diamond specifications and retailer prices

From $9,664 AUD
As of November 6, 2026
Save $8,485 AUD (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $18,149 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2377724079. Listed at 23 retailers as of November 2, 2026, with prices from $9,664 to $18,149, a $8,485 spread on the same certified stone. MOH London lists it at $18,149. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2377724079
Dimensions6.99 × 6.35 × 4.34 mm
L/W Ratio1.10
Top View
6.99 mm6.35 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2377724079
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

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 6
Current: $18,149 AUD|Low: $9,076 AUD|High: $18,367 AUD|Avg: $12,567 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 10$9,664 AUD
Retailer 7$9,722 AUD
Retailer 8$10,891 AUD
Retailer 9$10,891 AUD
Retailer 3$11,199 AUD
Retailer 2$12,023 AUD
Retailer 6$12,348 AUD
Retailer 4$13,457 AUD
Retailer 5$15,887 AUD
MOH London$18,149 AUD

46 data points across 10 retailers

23 retailers$9,664 AUD to $18,149 AUD

B
Cheapest Retailer
-
$9,664 AUD
Retailer 2
-
$9,722 AUD
View
Price last confirmed 19 days ago
B
Retailer 3
-
$10,115 AUD
View
B
Retailer 4
-
$10,151 AUD
View
B
Retailer 5
-
$10,197 AUD
View
B
Retailer 6
-
$10,466 AUD
View
B
Retailer 7
-
$10,767 AUD
View
B
Retailer 8
-
$10,865 AUD
View
B
Retailer 9
-
$10,891 AUD
View
Final sale: no returns
Retailer 10
-
$10,891 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$10,981 AUD
View
B
Retailer 12
-
$11,199 AUD
View
B
Retailer 13
-
$12,023 AUD
View
B
Retailer 14
-
$12,174 AUD
View
Retailer 15
-
$12,348 AUD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$12,492 AUD
View
B
Retailer 17
-
$12,968 AUD
View
B
Retailer 18
-
$12,968 AUD
View
B
Retailer 19
-
$13,404 AUD
View
B
Retailer 20
-
$13,457 AUD
View
Retailer 21
-
$14,340 AUD
View
Price last confirmed 15 days ago
C
Retailer 22
-
$15,887 AUD
View
Most Expensive
C
MOH London
62DF4E4C5 · Nov 2
$18,149 AUD
£9,819 GBP
View
22 more retailers have this diamond
Prices start from $9,664 AUDSave up to $8,485 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
$9,664 AUD