CaratHunter
Plans
Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2231756389

Certificate GIA 2231756389

Diamond specifications and retailer prices

From $4,191 SGD
$3,270 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $4,191 SGD at Shane Co
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Shane Co

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded J 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 2231756389. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.6°
Pavilion angle31.66°
OriginNatural
Grading LabGIA
CertificateGIA 2231756389
Dimensions6.95 × 5.31 × 3.59 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.95 mm5.31 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231756389
Side View
Table 64.0%Crown 43.6°Girdle: ThickPavilion 31.66°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,231 SGD|Low: $2,982 SGD|High: $4,651 SGD|Avg: $3,534 SGD|-4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Shane Co
October 5, 2026
Retailer 4$3,063 SGD
Retailer 3$3,093 SGD
Retailer 1$3,231 SGD
Retailer 2$3,408 SGD
Retailer 5$3,435 SGD
Shane Co$4,191 SGD
Retailer 6$4,588 SGD

82 data points across 7 retailers

1 retailer

B
Shane Co
26H0T43 · Nov 6
$4,191 SGD
$3,270 USD
View

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 Radiant
$4,191 SGD