CaratHunter
Plans
Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 5513610130

Certificate GIA 5513610130

Diamond specifications and retailer prices

From $3,019 NZD
$1,698 USD
As of November 3, 2026
Save $3,247 NZD (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,266 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-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 5513610130. Listed at 12 retailers as of November 1, 2026, with prices from $3,019 to $6,266, a $3,247 spread on the same certified stone. MOH London lists it at $6,266. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle36.99°
OriginNatural
Grading LabGIA
CertificateGIA 5513610130
Dimensions6.31 × 5.80 × 3.99 mm
L/W Ratio1.09
Top View
6.31 mm5.80 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513610130
Side View
Table 62.0%Crown 40°Girdle: STK-VTKPavilion 36.99°Culet: NoneDepth 68.8%

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 3
Current: $6,266 NZD|Low: $2,815 NZD|High: $6,512 NZD|Avg: $4,107 NZD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5$3,019 NZD
Retailer 9$3,023 NZD
Retailer 6$3,257 NZD
Retailer 2$3,484 NZD
Retailer 3$3,684 NZD
Retailer 8$3,810 NZD
Retailer 7$4,036 NZD
Retailer 10$4,036 NZD
Retailer 11$4,161 NZD
Retailer 4$4,874 NZD
MOH London$6,266 NZD

35 data points across 11 retailers

12 retailers$3,019 NZD to $6,266 NZD

A
Cheapest Retailer
-
$3,019 NZD
$1,698 USD
A
Retailer 2
-
$3,023 NZD
$1,700 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,257 NZD
$1,832 USD
View
B+
Retailer 4
-
$3,260 NZD
A$2,821 AUD
View
B+
Retailer 5
-
$3,484 NZD
£1,543 GBP
View
B+
Retailer 6
-
$3,684 NZD
A$3,188 AUD
View
B+
Retailer 7
-
$3,810 NZD
$2,143 USD
View
B
Retailer 8
-
$4,036 NZD
$2,270 USD
View
B
Retailer 9
-
$4,036 NZD
$2,270 USD
View
B
Retailer 10
-
$4,161 NZD
$2,340 USD
View
B
Retailer 11
-
$4,874 NZD
€2,611 EUR
View
Most Expensive
B
MOH London
E8E9572A0 · Nov 1
$6,266 NZD
£2,775 GBP
View
11 more retailers have this diamond
Prices start from $3,019 NZDSave up to $3,247 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.

A
1.21ct Cushion
$3,019 NZD