CaratHunter
Plans
Radiant|Lab Grown|IGI

1.20ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1

Diamond specifications and retailer prices

From $570 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $570 USD at Blue Nile
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 Blue Nile

About this 1.2ct lab-grown radiant diamond

This 1.2ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at a single retailer as of October 29, 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

1.20
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.64 × 5.19 × 3.44 mm
L/W Ratio1.47
Top View
7.64 mm5.19 mm1.20 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.3%

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: Oct 29
Current: $570 USD|Low: $147 USD|High: $646 USD|Avg: $362 USD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
September 30, 2026
Retailer 3$147 USD
Retailer 4$170 USD
Retailer 5$258 USD
Blue Nile$570 USD
Retailer 2$646 USD

3 data points across 5 retailers

1 retailer

B
Blue Nile
20244346 · Oct 29
$570 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
1.20ct Radiant
$570 USD