Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1555638026

Certificate GIA 1555638026

Diamond specifications and retailer prices

From $3,194 USD
As of November 4, 2026
Save $2,882 USD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,076 USD at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded D 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 1555638026. Listed at 13 retailers as of November 4, 2026, with prices from $3,194 to $6,076, a $2,882 spread on the same certified stone. Helzberg Diamonds lists it at $6,076. 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
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555638026
Dimensions6.94 × 5.34 × 3.65 mm
L/W Ratio1.30
Culet sizeNone
Top View
6.94 mm5.34 mm1.20 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555638026
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,076 USD|Low: $3,194 USD|High: $6,076 USD|Avg: $4,111 USD|+4.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9$3,194 USD
Retailer 11$3,248 USD
Retailer 6$3,272 USD
Retailer 10$3,414 USD
Retailer 2$3,689 USD
Retailer 4$3,848 USD
Retailer 13$4,076 USD
Retailer 3$4,136 USD
Retailer 8$4,259 USD
Retailer 7$4,432 USD
Retailer 12$5,388 USD
Retailer 5$5,781 USD
Helzberg Diamonds$6,076 USD

38 data points across 13 retailers

13 retailers$3,194 USD to $6,076 USD

A
Cheapest Retailer
-
$3,194 USD
A
Retailer 2
-
$3,248 USD
View
A
Retailer 3
-
$3,272 USD
View
B+
Retailer 4
-
$3,414 USD
View
B+
Retailer 5
-
$3,689 USD
View
B+
Retailer 6
-
$3,848 USD
View
B+
Retailer 7
-
$4,076 USD
View
B+
Retailer 8
-
$4,136 USD
View
B+
Retailer 9
-
$4,259 USD
View
B+
Retailer 10
-
$4,432 USD
View
B
Retailer 11
-
$5,388 USD
View
B
Retailer 12
-
$5,781 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMJOGIM · Nov 4
$6,076 USD
View
12 more retailers have this diamond
Prices start from $3,194 USDSave up to $2,882 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.

A
1.20ct Radiant
$3,194 USD