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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2225586805

Certificate GIA 2225586805

Diamond specifications and retailer prices

From $14,175 AUD
$9,957 USD
As of November 1, 2026
Save $9,707 AUD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $23,882 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2225586805. Listed at 14 retailers as of November 1, 2026, with prices from $14,175 to $23,882, a $9,707 spread on the same certified stone. MOH London lists it at $23,882. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2225586805
Dimensions7.18 × 6.08 × 4.16 mm
L/W Ratio1.18
Culet sizeNone
Top View
7.18 mm6.08 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2225586805
Side View
Table 58.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $23,882 AUD|Low: $13,581 AUD|High: $24,169 AUD|Avg: $18,235 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$13,581 AUD
Retailer 7$15,292 AUD
Retailer 2$16,528 AUD
Retailer 5$16,617 AUD
Retailer 4$18,347 AUD
Retailer 3$22,465 AUD
MOH London$23,882 AUD

44 data points across 7 retailers

14 retailers$14,175 AUD to $23,882 AUD

Retailer 1
-
$13,581 AUD
$9,540 USD
Price last confirmed 11 days ago
B
Retailer 2
-
$14,175 AUD
$9,957 USD
View
B
Retailer 3
-
$14,188 AUD
$9,966 USD
View
B
Retailer 4
-
$14,620 AUD
CA$14,263 CAD
View
B
Retailer 5
-
$15,097 AUD
$10,605 USD
View
B
Retailer 6
-
$15,292 AUD
$10,742 USD
View
B
Retailer 7
-
$15,419 AUD
$10,831 USD
View
B
Retailer 8
-
$16,528 AUD
£9,142 GBP
View
Retailer 9
-
$16,617 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$17,673 AUD
$12,414 USD
View
B
Retailer 11
-
$18,347 AUD
€12,274 EUR
View
Retailer 12
-
$20,118 AUD
$14,132 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$22,465 AUD
ZAR 254,937 ZAR
View
Most Expensive
B
MOH London
7E276AAAE · Nov 1
$23,882 AUD
£13,209 GBP
View
13 more retailers have this diamond
Prices start from $14,175 AUDSave up to $9,707 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
$14,175 AUD