Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 5242037212

Certificate GIA 5242037212

Diamond specifications and retailer prices

From $1,728 USD
HK$13,500 HKD
As of November 1, 2026
Save $3,237 USD (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,965 USD at NZ Jewellers · As of October 30, 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 5242037212. Listed at 8 retailers as of October 30, 2026, with prices from $1,728 to $4,965, a $3,237 spread on the same certified stone. NZ Jewellers lists it at $4,965. 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
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle59.91°
OriginNatural
Grading LabGIA
CertificateGIA 5242037212
Dimensions7.10 × 5.33 × 3.65 mm
L/W Ratio1.33
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.10 mm5.33 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242037212
Side View
Table 64.0%CrownGirdle: MED-STKPavilion 59.91°Culet: NoneDepth 68.5%

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 1
Current: $4,965 USD|Low: $1,728 USD|High: $5,333 USD|Avg: $3,130 USD|-6.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$1,728 USD
Retailer 3$2,346 USD
Retailer 7$2,430 USD
Retailer 2$2,454 USD
Retailer 8$2,599 USD
Retailer 5$3,612 USD
Retailer 4$4,183 USD
NZ Jewellers$4,965 USD

28 data points across 8 retailers

8 retailers$1,728 USD to $4,965 USD

A
Cheapest Retailer
-
$1,728 USD
HK$13,500 HKD
A
Retailer 2
-
$2,346 USD
View
A
Retailer 3
-
$2,430 USD
SGD 3,284 SGD
View
A
Retailer 4
-
$2,454 USD
View
B+
Retailer 5
-
$2,599 USD
A$3,998 AUD
View
B+
Retailer 6
-
$3,612 USD
€3,440 EUR
View
B
Retailer 7
-
$4,183 USD
£3,294 GBP
View
Most Expensive
B
NZ Jewellers
c09eb73a-2936-4dab-a5a3-4fba6714d1d3 · Oct 30
$4,965 USD
View
7 more retailers have this diamond
Prices start from $1,728 USDSave up to $3,237 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.

A
1.20ct Radiant
$1,728 USD