Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2528970528

Certificate GIA 2528970528

Diamond specifications and retailer prices

From $2,275 USD
As of November 5, 2026
Save $2,644 USD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,919 USD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2528970528. Listed at 12 retailers as of November 4, 2026, with prices from $2,275 to $4,919, a $2,644 spread on the same certified stone. MOH London lists it at $4,919. 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
K
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528970528
Dimensions6.59 × 6.55 × 4.45 mm
L/W Ratio1.01
Top View
6.59 mm6.55 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2528970528
Side View
Table 61.0%Crown 37°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 67.9%

Caratlytics Score

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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: Nov 5
Current: $4,919 USD|Low: $2,275 USD|High: $4,985 USD|Avg: $3,092 USD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$2,275 USD
Retailer 7$2,357 USD
Retailer 12$2,521 USD
Retailer 2$2,730 USD
Retailer 9$2,760 USD
Retailer 8$2,815 USD
Retailer 3$2,956 USD
Retailer 5$2,961 USD
Retailer 10$3,053 USD
Retailer 11$3,080 USD
Retailer 6$3,435 USD
MOH London$4,919 USD

42 data points across 12 retailers

12 retailers$2,275 USD to $4,919 USD

A
Cheapest Retailer
-
$2,275 USD
A
Retailer 2
-
$2,357 USD
View
A
Retailer 3
-
$2,521 USD
View
A
Retailer 4
-
$2,730 USD
View
B+
Retailer 5
-
$2,760 USD
View
Retailer 6
-
$2,815 USD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$2,956 USD
View
A
Retailer 8
-
$2,961 USD
View
B+
Retailer 9
-
$3,053 USD
View
B+
Retailer 10
-
$3,080 USD
View
B+
Retailer 11
-
$3,435 USD
View
Most Expensive
B
MOH London
34FD10842 · Nov 4
$4,919 USD
£3,873 GBP
View
11 more retailers have this diamond
Prices start from $2,275 USDSave up to $2,644 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
$2,275 USD