Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 2556740785

Certificate GIA 2556740785

Diamond specifications and retailer prices

From $3,121 USD
As of November 1, 2026
Save $3,368 USD (52%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $6,761 USD 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
Color
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: $6,761 USD|Low: $2,974 USD|High: $6,761 USD|Avg: $4,109 USD
NZ Jewellers
Retailer 2
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Retailer 25
Retailer 26
November 3, 2026
Retailer 14$3,121 USD
Retailer 22$3,175 USD
Retailer 11$3,245 USD
Retailer 12$3,265 USD
Retailer 10$3,302 USD
Retailer 24$3,385 USD
Retailer 3$3,516 USD
Retailer 26$3,516 USD
Retailer 16$3,522 USD
Retailer 7$3,620 USD
Retailer 5$3,651 USD
Retailer 19$3,760 USD
Retailer 20$3,785 USD
Retailer 6$3,830 USD
Retailer 9$3,830 USD
Retailer 8$3,950 USD
Retailer 2$3,969 USD
Retailer 4$4,057 USD
Retailer 15$4,157 USD
Retailer 17$4,171 USD
Retailer 21$4,392 USD
Retailer 18$4,393 USD
Retailer 23$4,770 USD
Retailer 13$6,489 USD
Retailer 25$6,648 USD
NZ Jewellers$6,761 USD

23 data points across 26 retailers

27 retailers$3,121 USD to $6,489 USD

B+
Cheapest Retailer
-
$3,121 USD
B+
Retailer 2
-
$3,175 USD
View
B+
Retailer 3
-
$3,265 USD
View
B+
Retailer 4
-
$3,302 USD
View
B+
Retailer 5
-
$3,385 USD
View
Retailer 6
-
$3,516 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$3,516 USD
View
Retailer 8
-
$3,516 USD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$3,522 USD
View
B+
Retailer 10
-
$3,620 USD
View
B+
Retailer 11
-
$3,651 USD
View
B+
Retailer 12
-
$3,785 USD
View
B
Retailer 13
-
$3,830 USD
View
B
Retailer 14
-
$3,830 USD
View
B
Retailer 15
-
$3,950 USD
View
B
Retailer 16
-
$3,969 USD
View
B
Retailer 17
-
$4,057 USD
View
Retailer 18
-
$4,057 USD
View
Price last confirmed 17 days ago
Retailer 19
-
$4,157 USD
View
Price last confirmed 30 days ago
B
Retailer 20
-
$4,171 USD
View
B
Retailer 21
-
$4,392 USD
View
Retailer 22
-
$4,393 USD
View
Price last confirmed 25 days ago
B
Retailer 23
-
$4,770 USD
View
B
Retailer 24
-
$6,489 USD
View
Retailer 25
-
$6,648 USD
View
Price last confirmed 10 days ago
Retailer 26
-
$6,761 USD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
08ea702e-d102-4fa3-8078-23c675ad2a1a · Oct 21
$6,761 USD
View
Price last confirmed 16 days ago
26 more retailers have this diamond
Prices start from $3,121 USDSave up to $3,368 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.

B+
1.20ct Radiant
$3,121 USD