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Cushion|Natural|GIA

1.55ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6452554551

Certificate GIA 6452554551

Diamond specifications and retailer prices

From $7,777 NZD
$4,376 USD
As of November 1, 2026
Save $7,901 NZD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,678 NZD at MOH London · As of November 1, 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 November 1, 2026, with prices from $7,777 to $15,678, a $7,901 spread on the same certified stone. MOH London lists it at $15,678. 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
Colour
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: Nov 1
Current: $15,678 NZD|Low: $7,777 NZD|High: $15,866 NZD|Avg: $10,281 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$7,777 NZD
Retailer 7$7,900 NZD
Retailer 9$8,231 NZD
Retailer 8$8,917 NZD
Retailer 2$9,470 NZD
Retailer 4$9,604 NZD
Retailer 10$9,859 NZD
Retailer 3$10,508 NZD
Retailer 5$12,099 NZD
MOH London$15,678 NZD

35 data points across 10 retailers

17 retailers$7,777 NZD to $15,678 NZD

B+
Cheapest Retailer
-
$7,777 NZD
$4,376 USD
B+
Retailer 2
-
$7,900 NZD
$4,445 USD
View
B
Retailer 3
-
$8,231 NZD
$4,631 USD
View
Final sale: no returns
B
Retailer 4
-
$8,376 NZD
$4,713 USD
View
B
Retailer 5
-
$8,389 NZD
$4,720 USD
View
B+
Retailer 6
-
$8,917 NZD
$5,017 USD
View
B
Retailer 7
-
$9,379 NZD
$5,277 USD
View
B+
Retailer 8
-
$9,470 NZD
£4,196 GBP
View
B
Retailer 9
-
$9,604 NZD
£4,255 GBP
View
Retailer 10
-
$9,859 NZD
A$8,534 AUD
View
Price last confirmed 23 days ago
B
Retailer 11
-
$9,988 NZD
$5,620 USD
View
B
Retailer 12
-
$9,988 NZD
$5,620 USD
View
B
Retailer 13
-
$10,326 NZD
$5,810 USD
View
B
Retailer 14
-
$10,508 NZD
€5,631 EUR
View
Retailer 15
-
$10,861 NZD
$6,111 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$12,099 NZD
ZAR 109,980 ZAR
View
Most Expensive
B
MOH London
865F3525F · Nov 1
$15,678 NZD
£6,946 GBP
View
16 more retailers have this diamond
Prices start from $7,777 NZDSave up to $7,901 NZD

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
$7,777 NZD