Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5546558713

Certificate GIA 5546558713

Diamond specifications and retailer prices

From $1,760 USD
As of November 6, 2026
Save $1,747 USD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,707 USD at MOH London · As of October 21, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5546558713. Listed at 17 retailers as of November 6, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle38.2°
OriginNatural
Grading LabGIA
CertificateGIA 5546558713
Dimensions7.63 × 6.09 × 4.19 mm
L/W Ratio1.25
Top View
7.63 mm6.09 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5546558713
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 38.2°Culet: NoneDepth 68.9%

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 6
Current: $3,707 USD|Low: $1,638 USD|High: $4,209 USD|Avg: $2,472 USD|-11.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 5$1,638 USD
Retailer 2$1,760 USD
Retailer 3$1,857 USD
Retailer 14$1,860 USD
Retailer 16$1,985 USD
Retailer 4$2,004 USD
Retailer 6$2,040 USD
Retailer 7$2,108 USD
Retailer 10$2,307 USD
Retailer 13$2,309 USD
Retailer 8$2,416 USD
Retailer 15$2,540 USD
Retailer 11$2,859 USD
Retailer 12$2,908 USD
Retailer 9$3,507 USD
MOH London$3,707 USD

31 data points across 16 retailers

17 retailers$1,760 USD to $3,507 USD

Retailer 1
-
$1,638 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$1,760 USD
View
Final sale: no returns
Retailer 3
-
$1,857 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$1,860 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$1,985 USD
View
Retailer 6
-
$2,004 USD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$2,040 USD
View
A
Retailer 8
-
$2,108 USD
View
A
Retailer 9
-
$2,307 USD
View
Retailer 10
-
$2,307 USD
View
Price last confirmed 16 days ago
Retailer 11
-
$2,309 USD
View
Price last confirmed 7 days ago
A
Retailer 12
-
$2,416 USD
View
Retailer 13
-
$2,540 USD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$2,859 USD
View
A
Retailer 15
-
$2,908 USD
View
B+
Retailer 16
-
$3,507 USD
View
Most Expensive
MOH London
74B40F158 · Oct 21
$3,707 USD
£2,919 GBP
View
Price last confirmed 16 days ago
16 more retailers have this diamond
Prices start from $1,760 USDSave up to $1,747 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
1.50ct Cushion
$1,760 USD