Radiant|Natural|GIA

1.20ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 6521400249

Certificate GIA 6521400249

Diamond specifications and retailer prices

From $1,395 USD
As of November 6, 2026
Save $1,797 USD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,483 USD at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6521400249. Listed at 18 retailers as of November 4, 2026, with a 129% 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6521400249
Dimensions7.24 × 5.37 × 3.59 mm
L/W Ratio1.35
Top View
7.24 mm5.37 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521400249
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,760 USD|Low: $1,395 USD|High: $3,255 USD|Avg: $2,064 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 2$1,395 USD
Retailer 5$1,465 USD
Retailer 9$1,744 USD
Retailer 1$1,760 USD
Retailer 6$1,773 USD
Retailer 7$1,943 USD
Retailer 3$1,964 USD
Retailer 4$2,028 USD
Retailer 10$2,230 USD
Retailer 8$2,483 USD
Retailer 11$3,192 USD

28 data points across 11 retailers

18 retailers$1,395 USD to $3,192 USD

A
Cheapest Retailer
-
$1,395 USD
A
Retailer 2
-
$1,465 USD
View
A
Retailer 3
-
$1,744 USD
View
A
Retailer 4
-
$1,760 USD
View
A
Retailer 5
-
$1,764 USD
View
A
Retailer 6
-
$1,773 USD
View
Retailer 7
-
$1,838 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$1,838 USD
View
Price last confirmed 20 days ago
Retailer 9
-
$1,923 USD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$1,942 USD
View
B+
Retailer 11
-
$1,943 USD
View
B+
Retailer 12
-
$1,964 USD
View
B+
Retailer 13
-
$2,028 USD
View
Retailer 14
-
$2,121 USD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$2,230 USD
View
B+
Retailer 16
-
$2,483 USD
View
B
Retailer 17
-
$3,192 USD
View
Most Expensive
NZ Jewellers
5544a268-c8f8-424f-a9e6-e1c5fe161a91 · Oct 17
$4,483 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $1,395 USDSave up to $1,797 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
$1,395 USD