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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2307390593

Certificate GIA 2307390593

Diamond specifications and retailer prices

From $6,974 NZD
As of November 5, 2026
Save $4,016 NZD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,990 NZD at Steven Stone · As of November 7, 2026
View at Steven Stone

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2307390593. Listed at 8 retailers as of November 5, 2026, with prices from $6,974 to $10,990, a $4,016 spread on the same certified stone. Steven Stone lists it at $10,990. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2307390593
Dimensions6.26 × 5.78 × 3.92 mm
L/W Ratio1.08
Top View
6.26 mm5.78 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2307390593
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.9%

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 5
Current: $9,718 NZD|Low: $6,460 NZD|High: $10,990 NZD|Avg: $8,568 NZD|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Steven Stone
November 7, 2026
Retailer 6$6,974 NZD
Retailer 2$7,106 NZD
Retailer 4$9,092 NZD
Retailer 5$9,092 NZD
Retailer 3$9,398 NZD
Retailer 1$9,718 NZD
Steven Stone$10,990 NZD

36 data points across 7 retailers

8 retailers$6,974 NZD to $10,990 NZD

B+
Cheapest Retailer
-
$6,974 NZD
B+
Retailer 2
-
$7,106 NZD
View
Final sale: no returns
B
Retailer 3
-
$7,380 NZD
View
B
Retailer 4
-
$9,092 NZD
View
B
Retailer 5
-
$9,092 NZD
View
B
Retailer 6
-
$9,398 NZD
View
B
Retailer 7
-
$9,718 NZD
View
Most Expensive
Steven Stone
6936280 · Nov 7
$10,990 NZD
£4,797 GBP
View
7 more retailers have this diamond
Prices start from $6,974 NZDSave up to $4,016 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
$6,974 NZD