Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 2556740785

Certificate GIA 2556740785

Diamond specifications and retailer prices

From $5,630 NZD
As of November 1, 2026
Save $6,076 NZD (52%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $12,196 NZD at NZ Jewellers · As of October 21, 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 H 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 2556740785. Listed at 27 retailers as of November 1, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle51.66°
Pavilion angle35.15°
OriginNatural
Grading LabGIA
CertificateGIA 2556740785
Dimensions7.33 × 5.18 × 3.51 mm
L/W Ratio1.42
Girdle conditionThick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.33 mm5.18 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556740785
Side View
Table 72.0%Crown 51.66°Girdle: STK-THKPavilion 35.15°Culet: NoneDepth 67.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $12,196 NZD|Low: $5,365 NZD|High: $12,196 NZD|Avg: $7,412 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
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Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 3, 2026
Retailer 14$5,630 NZD
Retailer 22$5,727 NZD
Retailer 11$5,854 NZD
Retailer 12$5,890 NZD
Retailer 10$5,956 NZD
Retailer 24$6,106 NZD
Retailer 3$6,343 NZD
Retailer 26$6,343 NZD
Retailer 16$6,353 NZD
Retailer 7$6,530 NZD
Retailer 5$6,586 NZD
Retailer 19$6,783 NZD
Retailer 20$6,828 NZD
Retailer 6$6,909 NZD
Retailer 9$6,909 NZD
Retailer 8$7,125 NZD
Retailer 2$7,160 NZD
Retailer 4$7,318 NZD
Retailer 15$7,499 NZD
Retailer 17$7,524 NZD
Retailer 21$7,923 NZD
Retailer 18$7,925 NZD
Retailer 23$8,605 NZD
Retailer 13$11,706 NZD
Retailer 25$11,992 NZD
NZ Jewellers$12,196 NZD

23 data points across 26 retailers

27 retailers$5,630 NZD to $11,706 NZD

B+
Cheapest Retailer
-
$5,630 NZD
B+
Retailer 2
-
$5,727 NZD
View
B+
Retailer 3
-
$5,890 NZD
View
B+
Retailer 4
-
$5,956 NZD
View
B+
Retailer 5
-
$6,106 NZD
View
Retailer 6
-
$6,343 NZD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$6,343 NZD
View
Retailer 8
-
$6,343 NZD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$6,353 NZD
View
B+
Retailer 10
-
$6,530 NZD
View
B+
Retailer 11
-
$6,586 NZD
View
B+
Retailer 12
-
$6,828 NZD
View
B
Retailer 13
-
$6,909 NZD
View
B
Retailer 14
-
$6,909 NZD
View
B
Retailer 15
-
$7,125 NZD
View
B
Retailer 16
-
$7,160 NZD
View
B
Retailer 17
-
$7,318 NZD
View
Retailer 18
-
$7,318 NZD
View
Price last confirmed 17 days ago
Retailer 19
-
$7,499 NZD
View
Price last confirmed 30 days ago
B
Retailer 20
-
$7,524 NZD
View
B
Retailer 21
-
$7,923 NZD
View
Retailer 22
-
$7,925 NZD
View
Price last confirmed 25 days ago
B
Retailer 23
-
$8,605 NZD
View
B
Retailer 24
-
$11,706 NZD
View
Retailer 25
-
$11,992 NZD
View
Price last confirmed 10 days ago
Retailer 26
-
$12,196 NZD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
08ea702e-d102-4fa3-8078-23c675ad2a1a · Oct 21
$12,196 NZD
$6,761 USD
View
Price last confirmed 16 days ago
26 more retailers have this diamond
Prices start from $5,630 NZDSave up to $6,076 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.

B+
1.20ct Radiant
$5,630 NZD