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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

ID • I/SI2 • GIA 1558540135

Certificate GIA 1558540135

Diamond specifications and retailer prices

From $2,594 NZD
As of November 1, 2026
Save $3,491 NZD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,085 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 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 1558540135. Listed at 11 retailers as of November 1, 2026, with prices from $2,594 to $6,085, a $3,491 spread on the same certified stone. MOH London lists it at $6,085. 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
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1558540135
Dimensions7.33 × 5.46 × 3.68 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.33 mm5.46 mm1.21 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1558540135
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.4%

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 1
Current: $6,085 NZD|Low: $2,571 NZD|High: $6,198 NZD|Avg: $3,783 NZD|-1.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 7$2,594 NZD
Retailer 4$2,740 NZD
Retailer 5$2,809 NZD
Retailer 8$3,474 NZD
Retailer 6$3,609 NZD
Retailer 9$3,618 NZD
Retailer 2$3,746 NZD
Retailer 3$4,692 NZD
MOH London$6,085 NZD

36 data points across 9 retailers

11 retailers$2,594 NZD to $6,085 NZD

A
Cheapest Retailer
-
$2,594 NZD
A
Retailer 2
-
$2,740 NZD
View
A
Retailer 3
-
$2,809 NZD
View
A
Retailer 4
-
$3,272 NZD
View
Retailer 5
-
$3,474 NZD
View
Price last confirmed 19 days ago
A
Retailer 6
-
$3,592 NZD
View
A
Retailer 7
-
$3,609 NZD
View
Retailer 8
-
$3,618 NZD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$3,746 NZD
View
B+
Retailer 10
-
$4,692 NZD
View
Most Expensive
B
MOH London
7EE6C21E5 · Nov 1
$6,085 NZD
£2,695 GBP
View
10 more retailers have this diamond
Prices start from $2,594 NZDSave up to $3,491 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
$2,594 NZD