CaratHunter
Plans
Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 2436738919

Certificate GIA 2436738919

Diamond specifications and retailer prices

From $2,380 AUD
$1,668 USD
As of November 1, 2026
Save $2,779 AUD (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,159 AUD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2436738919. Listed at 7 retailers as of November 1, 2026, with prices from $2,380 to $5,159, a $2,779 spread on the same certified stone. Frank Darling lists it at $5,159. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.2°
Pavilion angle64.9°
OriginNatural
Grading LabGIA
CertificateGIA 2436738919
Dimensions5.90 × 5.63 × 3.99 mm
L/W Ratio1.05
Top View
5.90 mm5.63 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2436738919
Side View
Table 69.0%Crown 39.2°Girdle: THK-VTKPavilion 64.9°Culet: NoneDepth 70.9%

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 1
Current: $5,159 AUD|Low: $2,380 AUD|High: $5,159 AUD|Avg: $3,151 AUD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6$2,380 AUD
Retailer 4$2,396 AUD
Retailer 5$2,414 AUD
Retailer 3$2,483 AUD
Retailer 2$3,632 AUD
Frank Darling$5,159 AUD

35 data points across 6 retailers

7 retailers$2,380 AUD to $5,159 AUD

B+
Cheapest Retailer
-
$2,380 AUD
$1,668 USD
B+
Retailer 2
-
$2,396 AUD
$1,679 USD
View
B+
Retailer 3
-
$2,414 AUD
$1,692 USD
View
B+
Retailer 4
-
$2,483 AUD
$1,740 USD
View
B+
Retailer 5
-
$2,494 AUD
View
B
Retailer 6
-
$3,632 AUD
£2,004 GBP
View
Most Expensive
C
Frank Darling
CU2552MR · Nov 2
$5,159 AUD
$3,616 USD
View
6 more retailers have this diamond
Prices start from $2,380 AUDSave up to $2,779 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
$2,380 AUD