CaratHunter
Plans
Radiant|Natural|GIA

1.21ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 6412892075

Certificate GIA 6412892075

Diamond specifications and retailer prices

From $4,394 AUD
£2,377 GBP
As of November 7, 2026
1 retailer carries this diamond
Only listing: $4,394 AUD at 77 Diamonds
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 77 Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6412892075. Listed at a single retailer as of November 7, 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6412892075
Dimensions7.23 × 5.60 × 3.75 mm
L/W Ratio1.29
Top View
7.23 mm5.60 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6412892075
Side View
Table 70.0%CrownGirdle: NUL-NULPavilionCuletDepth 67.0%

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 7
Current: $4,394 AUD|Low: $4,335 AUD|High: $4,443 AUD|Avg: $4,413 AUD|+1.4%
November 7, 2026
77 Diamonds$4,394 AUD

36 data points across 1 retailer

1 retailer

B
77 Diamonds
RADMBUSFJS27Z · Nov 7
$4,394 AUD
£2,377 GBP
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
$4,394 AUD