Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2225586805

Certificate GIA 2225586805

Diamond specifications and retailer prices

From $9,957 USD
As of October 30, 2026
Save $6,909 USD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,866 USD at MOH London · As of October 29, 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 October 29, 2026, with prices from $9,957 to $16,866, a $6,909 spread on the same certified stone. MOH London lists it at $16,866. 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
Color
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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Price History

Last verified: Oct 30
Current: $16,866 USD|Low: $9,540 USD|High: $16,977 USD|Avg: $12,527 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 6$9,540 USD
Retailer 7$10,742 USD
Retailer 8$10,831 USD
Retailer 3$11,610 USD
Retailer 5$11,673 USD
Retailer 2$12,888 USD
Retailer 4$15,697 USD
MOH London$16,866 USD

44 data points across 8 retailers

14 retailers$9,957 USD to $16,866 USD

Retailer 1
-
$9,540 USD
Price last confirmed 10 days ago
B
Retailer 2
-
$9,957 USD
View
B
Retailer 3
-
$9,966 USD
View
B
Retailer 4
-
$10,270 USD
CA$14,263 CAD
View
B
Retailer 5
-
$10,605 USD
View
B
Retailer 6
-
$10,742 USD
View
B
Retailer 7
-
$10,831 USD
View
B
Retailer 8
-
$11,610 USD
£9,141 GBP
View
Retailer 9
-
$11,673 USD
A$17,958 AUD
View
Price last confirmed 7 days ago
B
Retailer 10
-
$12,414 USD
View
B
Retailer 11
-
$12,888 USD
€12,274 EUR
View
Retailer 12
-
$14,132 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$15,697 USD
ZAR 253,582 ZAR
View
Most Expensive
B
MOH London
7E276AAAE · Oct 29
$16,866 USD
£13,280 GBP
View
13 more retailers have this diamond
Prices start from $9,957 USDSave up to $6,909 USD

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
$9,957 USD