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Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1555638026

Certificate GIA 1555638026

Diamond specifications and retailer prices

From $5,762 NZD
As of November 4, 2026
Save $5,199 NZD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,960 NZD 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 $5,762 to $10,960, a $5,199 spread on the same certified stone. Helzberg Diamonds lists it at $10,960. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $10,960 NZD|Low: $5,762 NZD|High: $10,960 NZD|Avg: $7,417 NZD|+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$5,762 NZD
Retailer 11$5,859 NZD
Retailer 6$5,902 NZD
Retailer 10$6,159 NZD
Retailer 2$6,655 NZD
Retailer 4$6,941 NZD
Retailer 13$7,353 NZD
Retailer 3$7,461 NZD
Retailer 8$7,683 NZD
Retailer 7$7,995 NZD
Retailer 12$9,719 NZD
Retailer 5$10,428 NZD
Helzberg Diamonds$10,960 NZD

38 data points across 13 retailers

13 retailers$5,762 NZD to $10,960 NZD

A
Cheapest Retailer
-
$5,762 NZD
A
Retailer 2
-
$5,859 NZD
View
A
Retailer 3
-
$5,902 NZD
View
B+
Retailer 4
-
$6,159 NZD
View
B+
Retailer 5
-
$6,655 NZD
View
B+
Retailer 6
-
$6,941 NZD
View
B+
Retailer 7
-
$7,353 NZD
View
B+
Retailer 8
-
$7,461 NZD
View
B+
Retailer 9
-
$7,683 NZD
View
B+
Retailer 10
-
$7,995 NZD
View
B
Retailer 11
-
$9,719 NZD
View
B
Retailer 12
-
$10,428 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMJOGIM · Nov 4
$10,960 NZD
$6,076 USD
View
12 more retailers have this diamond
Prices start from $5,762 NZDSave up to $5,199 NZD

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
$5,762 NZD