Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6551145505

Certificate GIA 6551145505

Diamond specifications and retailer prices

From $2,080 USD
As of November 5, 2026
Save $388 USD (16%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,967 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 J 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 6551145505. Listed at 18 retailers as of November 5, 2026, with a relatively tight 19% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551145505
Dimensions7.09 × 5.43 × 3.73 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551145505
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $2,080 USD|Low: $1,766 USD|High: $4,212 USD|Avg: $2,596 USD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2$1,766 USD
Retailer 5$1,879 USD
Retailer 1$2,080 USD
Retailer 9$2,192 USD
Retailer 3$2,321 USD
Retailer 4$2,489 USD
Retailer 8$2,883 USD
Retailer 10$2,924 USD
Retailer 6$2,945 USD
Retailer 7$4,184 USD

27 data points across 10 retailers

18 retailers$2,080 USD to $2,468 USD

Retailer 1
-
$1,766 USD
Price last confirmed 18 days ago
Retailer 2
-
$1,879 USD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$2,080 USD
View
B+
Retailer 4
-
$2,228 USD
View
Retailer 5
-
$2,230 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$2,376 USD
View
Price last confirmed 22 days ago
Retailer 7
-
$2,376 USD
View
Price last confirmed 20 days ago
B
Retailer 8
-
$2,468 USD
View
Retailer 9
-
$2,481 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$2,485 USD
View
Price last confirmed 22 days ago
Retailer 11
-
$2,489 USD
View
Price last confirmed 17 days ago
Retailer 12
-
$2,515 USD
View
Price last confirmed 20 days ago
Retailer 13
-
$2,580 USD
View
Price last confirmed 17 days ago
Retailer 14
-
$2,741 USD
View
Price last confirmed 19 days ago
Retailer 15
-
$2,883 USD
View
Price last confirmed 21 days ago
Retailer 16
-
$2,924 USD
View
Price last confirmed 31 days ago
Retailer 17
-
$4,184 USD
View
Price last confirmed 19 days ago
Most Expensive
NZ Jewellers
466366b3-12a7-4089-a98e-e167588e8ce3 · Oct 17
$4,967 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $2,080 USDSave up to $388 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
$2,080 USD