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Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 5231970791

Certificate GIA 5231970791

Diamond specifications and retailer prices

From $3,739 NZD
As of November 5, 2026
Save $6,875 NZD (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,614 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231970791. Listed at 8 retailers as of November 5, 2026, with prices from $3,739 to $10,614, a $6,875 spread on the same certified stone. NZ Jewellers lists it at $10,614. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle60.33°
OriginNatural
Grading LabGIA
CertificateGIA 5231970791
Dimensions7.10 × 5.34 × 3.67 mm
L/W Ratio1.33
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
7.10 mm5.34 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231970791
Side View
Table 67.0%CrownGirdle: ThickPavilion 60.33°Culet: NoneDepth 68.7%

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 5
Current: $10,614 NZD|Low: $3,739 NZD|High: $11,390 NZD|Avg: $6,289 NZD|+10.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 5$3,739 NZD
Retailer 7$4,833 NZD
Retailer 6$5,078 NZD
Retailer 4$5,202 NZD
Retailer 3$5,273 NZD
Retailer 8$5,496 NZD
Retailer 2$8,846 NZD
NZ Jewellers$10,614 NZD

33 data points across 8 retailers

8 retailers$3,739 NZD to $10,614 NZD

A
Cheapest Retailer
-
$3,739 NZD
B+
Retailer 2
-
$4,833 NZD
View
Final sale: no returns
B+
Retailer 3
-
$5,078 NZD
View
B+
Retailer 4
-
$5,202 NZD
View
B+
Retailer 5
-
$5,273 NZD
View
B
Retailer 6
-
$5,496 NZD
View
B
Retailer 7
-
$8,846 NZD
View
Most Expensive
B
NZ Jewellers
823fe09c-94bc-410d-a984-a81c7c49cc42 · Nov 5
$10,614 NZD
$5,884 USD
View
7 more retailers have this diamond
Prices start from $3,739 NZDSave up to $6,875 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
$3,739 NZD