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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1309792916

Certificate GIA 1309792916

Diamond specifications and retailer prices

From $3,417 NZD
As of November 6, 2026
Save $4,583 NZD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,000 NZD at MOH London · As of November 7, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1309792916. Listed at 14 retailers as of November 6, 2026, with prices from $3,417 to $8,000, a $4,583 spread on the same certified stone. MOH London lists it at $8,000. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1309792916
Dimensions6.26 × 5.49 × 3.94 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp, Indented Natural, Natural
Top View
6.26 mm5.49 mm1.21 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1309792916
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.8%

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 6
Current: $8,000 NZD|Low: $3,393 NZD|High: $8,131 NZD|Avg: $4,953 NZD|-1.5%
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 7, 2026
Retailer 9$3,417 NZD
Retailer 10$4,149 NZD
Retailer 11$4,236 NZD
Retailer 3$4,304 NZD
Retailer 6$4,454 NZD
Retailer 12$4,591 NZD
Retailer 2$4,858 NZD
Retailer 4$4,963 NZD
Retailer 5$4,997 NZD
Retailer 13$5,143 NZD
Retailer 8$5,603 NZD
Retailer 7$5,702 NZD
MOH London$8,000 NZD

32 data points across 13 retailers

14 retailers$3,417 NZD to $8,000 NZD

A
Cheapest Retailer
-
$3,417 NZD
B+
Retailer 2
-
$4,147 NZD
View
B+
Retailer 3
-
$4,149 NZD
View
B+
Retailer 4
-
$4,236 NZD
View
Final sale: no returns
B+
Retailer 5
-
$4,304 NZD
View
B+
Retailer 6
-
$4,454 NZD
View
Retailer 7
-
$4,591 NZD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$4,750 NZD
View
B+
Retailer 9
-
$4,858 NZD
View
B+
Retailer 10
-
$4,997 NZD
View
Retailer 11
-
$5,143 NZD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$5,603 NZD
View
B
Retailer 13
-
$5,702 NZD
View
Most Expensive
B
MOH London
BFA899C27 · Nov 7
$8,000 NZD
£3,492 GBP
View
13 more retailers have this diamond
Prices start from $3,417 NZDSave up to $4,583 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
$3,417 NZD