Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 5172058360

Certificate GIA 5172058360

Diamond specifications and retailer prices

From $3,909 USD
As of October 31, 2026
Save $4,322 USD (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $8,231 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 I 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 5172058360. Listed at 23 retailers as of October 29, 2026, with prices from $3,909 to $8,231, a $4,322 spread on the same certified stone. MOH London lists it at $8,231. 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
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5172058360
Dimensions6.59 × 6.23 × 4.30 mm
L/W Ratio1.06
Top View
6.59 mm6.23 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 5172058360
Side View
Table 66.0%CrownGirdle: STK-EXTPavilionCulet: NoneDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,231 USD|Low: $4,094 USD|High: $8,287 USD|Avg: $5,422 USD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8$4,094 USD
Retailer 6$4,145 USD
Retailer 9$4,657 USD
Retailer 4$4,878 USD
Retailer 3$5,132 USD
Retailer 7$5,182 USD
Retailer 2$5,815 USD
Retailer 5$6,319 USD
MOH London$8,231 USD

36 data points across 9 retailers

23 retailers$3,909 USD to $8,231 USD

A
Cheapest Retailer
-
$3,909 USD
B+
Retailer 2
-
$4,016 USD
View
B+
Retailer 3
-
$4,061 USD
View
B+
Retailer 4
-
$4,094 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,110 USD
View
Retailer 6
-
$4,145 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
$4,398 USD
CA$6,108 CAD
View
B+
Retailer 8
-
$4,400 USD
View
B+
Retailer 9
-
$4,657 USD
View
B+
Retailer 10
-
$4,878 USD
£3,841 GBP
View
B+
Retailer 11
-
$4,896 USD
View
B+
Retailer 12
-
$4,904 USD
View
B+
Retailer 13
-
$4,916 USD
View
B+
Retailer 14
-
$5,132 USD
£4,041 GBP
View
Retailer 15
-
$5,182 USD
A$7,973 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$5,230 USD
View
B+
Retailer 17
-
$5,230 USD
View
B
Retailer 18
-
$5,400 USD
View
Retailer 19
-
$5,674 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$5,815 USD
€5,538 EUR
View
B
Retailer 21
-
$6,319 USD
ZAR 102,081 ZAR
View
B
Retailer 22
-
$7,441 USD
View
Most Expensive
B
MOH London
24751E2B7 · Oct 29
$8,231 USD
£6,481 GBP
View
22 more retailers have this diamond
Prices start from $3,909 USDSave up to $4,322 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.

A
1.51ct Cushion
$3,909 USD