Cushion|Natural|GIA

1.55ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6452554551

Certificate GIA 6452554551

Diamond specifications and retailer prices

From $6,113 CAD
$4,376 USD
As of October 30, 2026
Save $6,226 CAD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,339 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 1.55ct natural cushion diamond

This 1.55ct natural cushion sits in the one-and-a-half to two carat band, graded J 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 6452554551. Listed at 17 retailers as of October 26, 2026, with prices from $6,113 to $12,339, a $6,226 spread on the same certified stone. MOH London lists it at $12,339. 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

1.55
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 6452554551
Dimensions6.70 × 6.49 × 4.49 mm
L/W Ratio1.03
Top View
6.70 mm6.49 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452554551
Side View
Table 59.0%Crown 36.3°Girdle: 3.4Pavilion 38.3°Culet: NoneDepth 69.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,339 CAD|Low: $6,113 CAD|High: $12,470 CAD|Avg: $8,045 CAD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6$6,113 CAD
Retailer 7$6,209 CAD
Retailer 9$6,469 CAD
Retailer 8$7,008 CAD
Retailer 5$7,466 CAD
Retailer 4$7,548 CAD
Retailer 10$7,749 CAD
Retailer 3$8,233 CAD
Retailer 2$9,510 CAD
MOH London$12,339 CAD

35 data points across 10 retailers

17 retailers$6,113 CAD to $12,339 CAD

B+
Cheapest Retailer
-
$6,113 CAD
$4,376 USD
B+
Retailer 2
-
$6,209 CAD
$4,445 USD
View
B
Retailer 3
-
$6,469 CAD
$4,631 USD
View
Final sale: no returns
B
Retailer 4
-
$6,584 CAD
$4,713 USD
View
B
Retailer 5
-
$6,593 CAD
$4,720 USD
View
B+
Retailer 6
-
$7,008 CAD
$5,017 USD
View
B
Retailer 7
-
$7,371 CAD
$5,277 USD
View
B
Retailer 8
-
$7,466 CAD
£4,209 GBP
View
B
Retailer 9
-
$7,548 CAD
£4,255 GBP
View
Retailer 10
-
$7,749 CAD
A$8,534 AUD
View
Price last confirmed 21 days ago
B
Retailer 11
-
$7,851 CAD
$5,620 USD
View
B
Retailer 12
-
$7,851 CAD
$5,620 USD
View
B
Retailer 13
-
$8,116 CAD
$5,810 USD
View
B
Retailer 14
-
$8,233 CAD
€5,613 EUR
View
Retailer 15
-
$8,536 CAD
$6,111 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$9,510 CAD
ZAR 109,980 ZAR
View
Most Expensive
B
MOH London
865F3525F · Oct 26
$12,339 CAD
£6,955 GBP
View
16 more retailers have this diamond
Prices start from $6,113 CADSave up to $6,226 CAD

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+
1.55ct Cushion
$6,113 CAD