CaratHunter
Plans
Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541605256

Certificate GIA 6541605256

Diamond specifications and retailer prices

From $2,957 USD
HK$23,100 HKD
As of November 1, 2026
Save $3,419 USD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,375 USD at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541605256. Listed at 22 retailers as of November 1, 2026, with prices from $2,957 to $6,375, a $3,419 spread on the same certified stone. MOH London lists it at $6,375. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39°
OriginNatural
Grading LabGIA
CertificateGIA 6541605256
Dimensions6.78 × 6.57 × 4.38 mm
L/W Ratio1.03
Top View
6.78 mm6.57 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541605256
Side View
Table 66.0%CrownGirdle: THK-VTKPavilion 39°Culet: NoneDepth 66.7%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $6,375 USD|Low: $2,957 USD|High: $6,560 USD|Avg: $3,909 USD|-2.8%
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 18$2,957 USD
Retailer 17$3,015 USD
Retailer 15$3,174 USD
Retailer 6$3,219 USD
Retailer 13$3,240 USD
Retailer 10$3,355 USD
Retailer 3$3,409 USD
Retailer 9$3,421 USD
Retailer 19$3,617 USD
Retailer 12$3,620 USD
Retailer 16$3,630 USD
Retailer 11$3,801 USD
Retailer 7$3,884 USD
Retailer 5$3,949 USD
Retailer 14$3,964 USD
Retailer 2$4,536 USD
Retailer 4$4,725 USD
Retailer 8$6,237 USD
MOH London$6,375 USD

20 data points across 19 retailers

22 retailers$2,957 USD to $6,375 USD

A
Cheapest Retailer
-
$2,957 USD
HK$23,100 HKD
A
Retailer 2
-
$3,015 USD
View
A
Retailer 3
-
$3,174 USD
View
A
Retailer 4
-
$3,219 USD
View
A
Retailer 5
-
$3,240 USD
View
Final sale: no returns
A
Retailer 6
-
$3,355 USD
View
A
Retailer 7
-
$3,409 USD
€3,246 EUR
View
A
Retailer 8
-
$3,421 USD
View
A
Retailer 9
-
$3,617 USD
£2,848 GBP
View
A
Retailer 10
-
$3,620 USD
View
A
Retailer 11
-
$3,630 USD
View
A
Retailer 12
-
$3,801 USD
SGD 5,136 SGD
View
Retailer 13
-
$3,884 USD
View
Price last confirmed 13 days ago
A
Retailer 14
-
$3,949 USD
View
Retailer 15
-
$3,949 USD
View
Price last confirmed 11 days ago
A
Retailer 16
-
$3,964 USD
£3,121 GBP
View
A
Retailer 17
-
$4,165 USD
A$6,408 AUD
View
Retailer 18
-
$4,221 USD
A$6,493 AUD
View
Price last confirmed 24 days ago
A
Retailer 19
-
$4,536 USD
€4,320 EUR
View
B+
Retailer 20
-
$4,725 USD
ZAR 76,327 ZAR
View
Retailer 21
-
$6,237 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
8B8AE58D9 · Nov 1
$6,375 USD
£5,020 GBP
View
21 more retailers have this diamond
Prices start from $2,957 USDSave up to $3,419 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
$2,957 USD