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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 5242003538

Certificate GIA 5242003538

Diamond specifications and retailer prices

From $3,224 AUD
As of November 7, 2026
Save $2,554 AUD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,785 AUD at Reve Diamonds · As of October 16, 2026
View at Reve Diamonds

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 5242003538. Listed at 12 retailers as of November 5, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Pavilion angle36.29°
OriginNatural
Grading LabGIA
CertificateGIA 5242003538
Dimensions7.05 × 5.51 × 3.84 mm
L/W Ratio1.28
Key to symbols
Crystal, Feather, Needle
Top View
7.05 mm5.51 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242003538
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 36.29°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: $5,778 AUD|Low: $2,123 AUD|High: $9,317 AUD|Avg: $4,473 AUD|+68.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
October 29, 2026
Retailer 2$2,123 AUD
Retailer 4$2,580 AUD
Retailer 6$2,832 AUD
Retailer 5$2,986 AUD
Retailer 7$4,304 AUD
Retailer 3$4,462 AUD
Retailer 14$5,180 AUD
Retailer 1$5,778 AUD
Retailer 13$7,308 AUD
Retailer 9$7,463 AUD
Retailer 10$7,503 AUD
Retailer 8$7,983 AUD
Retailer 12$8,427 AUD
Reve Diamonds$8,785 AUD
Retailer 11$9,317 AUD

33 data points across 15 retailers

12 retailers$3,224 AUD to $5,778 AUD

Retailer 1
-
$2,123 AUD
Price last confirmed 24 days ago
Retailer 2
-
$2,580 AUD
View
Price last confirmed 24 days ago
Retailer 3
-
$2,986 AUD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
$3,224 AUD
View
Retailer 5
-
$4,250 AUD
View
Price last confirmed 14 days ago
Retailer 6
-
$4,304 AUD
View
Price last confirmed 12 days ago
Retailer 7
-
$4,462 AUD
View
Price last confirmed 24 days ago
Retailer 8
-
$5,180 AUD
View
Price last confirmed 23 days ago
B
Retailer 9
-
$5,778 AUD
View
Retailer 10
-
$7,308 AUD
View
Price last confirmed 22 days ago
Retailer 11
-
$7,463 AUD
View
Price last confirmed 22 days ago
Most Expensive
Reve Diamonds
E0B44E40B · Oct 16
$8,785 AUD
$6,036 USD
View
Price last confirmed 21 days ago
11 more retailers have this diamond
Prices start from $3,224 AUDSave up to $2,554 AUD

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
$3,224 AUD