Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 5456634140

Certificate GIA 5456634140

Diamond specifications and retailer prices

From $4,539 USD
As of November 6, 2026
Save $4,204 USD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,743 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5456634140. Listed at 10 retailers as of November 4, 2026, with prices from $4,539 to $8,743, a $4,204 spread on the same certified stone. MOH London lists it at $8,743. 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

1.20
Carat
E
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle51.19°
Pavilion angle31.73°
OriginNatural
Grading LabGIA
CertificateGIA 5456634140
Dimensions6.39 × 5.20 × 3.73 mm
L/W Ratio1.23
Top View
6.39 mm5.20 mm1.20 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5456634140
Side View
Table 68.0%Crown 51.19°Girdle: Very ThickPavilion 31.73°Culet: NoneDepth 71.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $8,743 USD|Low: $4,539 USD|High: $8,872 USD|Avg: $5,959 USD|+2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3$4,539 USD
Retailer 10$4,800 USD
Retailer 6$4,815 USD
Retailer 8$4,940 USD
Retailer 9$5,504 USD
Retailer 7$5,512 USD
Retailer 2$5,856 USD
Retailer 4$6,193 USD
Retailer 5$6,715 USD
MOH London$8,743 USD

45 data points across 10 retailers

10 retailers$4,539 USD to $8,743 USD

B+
Cheapest Retailer
-
$4,539 USD
B
Retailer 2
-
$4,800 USD
View
B
Retailer 3
-
$4,815 USD
View
B
Retailer 4
-
$4,940 USD
View
Retailer 5
-
$5,504 USD
View
Price last confirmed 9 days ago
Retailer 6
-
$5,512 USD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$5,856 USD
View
B
Retailer 8
-
$6,193 USD
View
B
Retailer 9
-
$6,715 USD
View
Most Expensive
B
MOH London
E1279AAA1 · Nov 4
$8,743 USD
£6,884 GBP
View
9 more retailers have this diamond
Prices start from $4,539 USDSave up to $4,204 USD

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
$4,539 USD