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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2235970813

Certificate GIA 2235970813

Diamond specifications and retailer prices

From $3,996 NZD
As of November 7, 2026
Save $3,166 NZD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,161 NZD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 2235970813. Listed at 7 retailers as of November 5, 2026, with prices from $3,996 to $7,161, a $3,166 spread on the same certified stone. Blue Nile lists it at $7,161. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle38.01°
OriginNatural
Grading LabGIA
CertificateGIA 2235970813
Dimensions7.08 × 5.53 × 3.85 mm
L/W Ratio1.28
Key to symbols
Crystal, Feather, Needle
Top View
7.08 mm5.53 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235970813
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 38.01°Culet: NoneDepth 69.7%

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 7
Current: $7,161 NZD|Low: $2,724 NZD|High: $7,161 NZD|Avg: $4,428 NZD|+64.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 6$2,724 NZD
Retailer 4$3,687 NZD
Retailer 7$3,813 NZD
Retailer 8$3,996 NZD
Retailer 2$5,040 NZD
Retailer 3$5,101 NZD
Retailer 5$6,619 NZD
Blue Nile$7,161 NZD

23 data points across 8 retailers

7 retailers$3,996 NZD to $7,161 NZD

Retailer 1
-
$2,724 NZD
Price last confirmed 30 days ago
Retailer 2
-
$3,813 NZD
View
Price last confirmed 32 days ago
B+
Retailer 3
-
$3,996 NZD
View
Retailer 4
-
$4,948 NZD
View
Price last confirmed 14 days ago
Retailer 5
-
$5,040 NZD
View
Price last confirmed 12 days ago
Retailer 6
-
$6,619 NZD
View
Price last confirmed 33 days ago
Most Expensive
B
Blue Nile
30516716 · Nov 5
$7,161 NZD
$3,970 USD
View
6 more retailers have this diamond
Prices start from $3,996 NZDSave up to $3,166 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+
1.21ct Cushion
$3,996 NZD