CaratHunter
Plans
Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

ID • I/SI2 • GIA 2557315146

Certificate GIA 2557315146

Diamond specifications and retailer prices

From $2,591 NZD
As of November 3, 2026
Save $3,798 NZD (59%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,388 NZD at MOH London · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557315146. Listed at 15 retailers as of November 2, 2026, with prices from $2,591 to $6,388, a $3,798 spread on the same certified stone. MOH London lists it at $6,388. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557315146
Dimensions7.38 × 5.50 × 3.60 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cavity, Crystal, Indented Natural, Needle, Natural
Top View
7.38 mm5.50 mm1.21 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557315146
Side View
Table 65.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 65.4%

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: $6,388 NZD|Low: $2,591 NZD|High: $6,657 NZD|Avg: $3,775 NZD|-4.0%
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
November 4, 2026
Retailer 8$2,591 NZD
Retailer 9$2,797 NZD
Retailer 10$2,955 NZD
Retailer 12$3,318 NZD
Retailer 4$3,364 NZD
Retailer 5$3,378 NZD
Retailer 6$3,599 NZD
Retailer 3$3,647 NZD
Retailer 11$3,709 NZD
Retailer 13$3,892 NZD
Retailer 2$3,960 NZD
Retailer 7$4,223 NZD
MOH London$6,388 NZD

22 data points across 13 retailers

15 retailers$2,591 NZD to $6,388 NZD

A
Cheapest Retailer
-
$2,591 NZD
A
Retailer 2
-
$2,797 NZD
View
A
Retailer 3
-
$2,955 NZD
View
A
Retailer 4
-
$3,318 NZD
View
B+
Retailer 5
-
$3,364 NZD
View
Final sale: no returns
A
Retailer 6
-
$3,378 NZD
View
A
Retailer 7
-
$3,499 NZD
View
Retailer 8
-
$3,592 NZD
View
Price last confirmed 27 days ago
A
Retailer 9
-
$3,599 NZD
View
A
Retailer 10
-
$3,647 NZD
View
A
Retailer 11
-
$3,709 NZD
View
B+
Retailer 12
-
$3,892 NZD
View
A
Retailer 13
-
$3,960 NZD
View
B+
Retailer 14
-
$4,223 NZD
View
Most Expensive
B
MOH London
89D5D95D6 · Nov 2
$6,388 NZD
£2,829 GBP
View
14 more retailers have this diamond
Prices start from $2,591 NZDSave up to $3,798 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
$2,591 NZD