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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 7556478631

Certificate GIA 7556478631

Diamond specifications and retailer prices

From $5,778 NZD
As of November 4, 2026
Save $5,211 NZD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,989 NZD at Helzberg Diamonds · As of November 6, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7556478631. Listed at 13 retailers as of November 4, 2026, with prices from $5,778 to $10,989, a $5,211 spread on the same certified stone. Helzberg Diamonds lists it at $10,989. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556478631
Dimensions7.16 × 5.34 × 3.52 mm
L/W Ratio1.34
Culet sizeNone
Top View
7.16 mm5.34 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556478631
Side View
Table 67.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.9%

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: $10,989 NZD|Low: $5,778 NZD|High: $10,989 NZD|Avg: $7,529 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$5,778 NZD
Retailer 11$5,875 NZD
Retailer 8$5,919 NZD
Retailer 10$6,175 NZD
Retailer 2$6,673 NZD
Retailer 4$6,961 NZD
Retailer 13$7,371 NZD
Retailer 3$7,477 NZD
Retailer 7$7,699 NZD
Retailer 6$8,017 NZD
Retailer 12$9,745 NZD
Retailer 5$10,430 NZD
Helzberg Diamonds$10,989 NZD

36 data points across 13 retailers

13 retailers$5,778 NZD to $10,989 NZD

A
Cheapest Retailer
-
$5,778 NZD
A
Retailer 2
-
$5,875 NZD
View
A
Retailer 3
-
$5,919 NZD
View
A
Retailer 4
-
$6,175 NZD
View
B+
Retailer 5
-
$6,673 NZD
View
B+
Retailer 6
-
$6,961 NZD
View
B+
Retailer 7
-
$7,371 NZD
View
B+
Retailer 8
-
$7,477 NZD
View
B+
Retailer 9
-
$7,699 NZD
View
B+
Retailer 10
-
$8,017 NZD
View
B
Retailer 11
-
$9,745 NZD
View
B
Retailer 12
-
$10,430 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRNLLMKNOMJH · Nov 6
$10,989 NZD
$6,092 USD
View
12 more retailers have this diamond
Prices start from $5,778 NZDSave up to $5,211 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
$5,778 NZD