Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 1257122355

Certificate GIA 1257122355

Diamond specifications and retailer prices

From $7,325 USD
As of October 31, 2026
Save $6,448 USD (47%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,773 USD 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 H 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 1257122355. Listed at 20 retailers as of October 31, 2026, with prices from $7,325 to $13,773, a $6,448 spread on the same certified stone. MOH London lists it at $13,773. 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
H
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1257122355
Dimensions6.67 × 6.35 × 4.29 mm
L/W Ratio1.05
Top View
6.67 mm6.35 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1257122355
Side View
Table 65.0%CrownGirdle: MED-EXTPavilionCulet: NoneDepth 67.5%

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: Oct 31
Current: $13,773 USD|Low: $7,325 USD|High: $13,940 USD|Avg: $9,425 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$7,325 USD
Retailer 7$7,370 USD
Retailer 8$7,739 USD
Retailer 11$8,265 USD
Retailer 9$8,410 USD
Retailer 6$9,134 USD
Retailer 10$9,220 USD
Retailer 4$9,232 USD
Retailer 2$10,262 USD
Retailer 5$12,142 USD
MOH London$13,773 USD

44 data points across 11 retailers

20 retailers$7,325 USD to $13,773 USD

B
Cheapest Retailer
-
$7,325 USD
B
Retailer 2
-
$7,370 USD
View
B
Retailer 3
-
$7,692 USD
View
B
Retailer 4
-
$7,739 USD
View
B
Retailer 5
-
$7,962 USD
View
B
Retailer 6
-
$8,059 USD
CA$11,193 CAD
View
B
Retailer 7
-
$8,220 USD
View
B
Retailer 8
-
$8,265 USD
View
B
Retailer 9
-
$8,410 USD
View
Retailer 10
-
$9,134 USD
A$14,052 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$9,220 USD
View
B
Retailer 12
-
$9,232 USD
£7,269 GBP
View
B
Retailer 13
-
$9,502 USD
View
B
Retailer 14
-
$9,790 USD
View
B
Retailer 15
-
$9,790 USD
View
B
Retailer 16
-
$10,110 USD
View
B
Retailer 17
-
$10,262 USD
€9,773 EUR
View
Retailer 18
-
$10,880 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$12,142 USD
ZAR 196,151 ZAR
View
Most Expensive
B
MOH London
353BC0986 · Nov 1
$13,773 USD
£10,845 GBP
View
19 more retailers have this diamond
Prices start from $7,325 USDSave up to $6,448 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
$7,325 USD