CaratHunter
Plans
Radiant|Natural|GIA

1.20ct K SI2 Radiant Natural Diamond

ID • K/SI2 • GIA 1151

Certificate GIA 1151

Diamond specifications and retailer prices

From $3,596 AUD
As of November 4, 2026
Save $80 AUD (2%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,676 AUD at B2C Jewels · As of November 6, 2026
View at B2C Jewels

About this 1.2ct natural radiant diamond

This 1.2ct 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. Listed at 2 retailers as of November 4, 2026, with a relatively tight 2% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.20
Carat
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1151
Dimensions6.57 × 5.27 mm
L/W Ratio1.25
Top View
6.57 mm5.27 mm1.20 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1151
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.8%

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 4
Current: $3,676 AUD|Low: $3,596 AUD|High: $3,676 AUD|Avg: $3,619 AUD|+1.3%
B2C Jewels
Retailer 2
September 23, 2026
Retailer 2$3,596 AUD
B2C Jewels$3,676 AUD

3 data points across 2 retailers

2 retailers$3,596 AUD to $3,676 AUD

B
Cheapest Retailer
-
$3,596 AUD
Most Expensive
B
B2C Jewels
21450396 · Nov 6
$3,676 AUD
$2,526 USD
View
1 more retailer has this diamond
Prices start from $3,596 AUDSave up to $80 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
1.20ct Radiant
$3,596 AUD