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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1515243600

Certificate GIA 1515243600

Diamond specifications and retailer prices

From $2,305 USD
As of November 1, 2026
Save $3,583 USD (61%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,888 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 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 1515243600. Listed at 21 retailers as of October 30, 2026, with prices from $2,305 to $5,888, a $3,583 spread on the same certified stone. NZ Jewellers lists it at $5,888. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1515243600
Dimensions7.14 × 5.33 × 3.65 mm
L/W Ratio1.34
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Needle, Natural
Top View
7.14 mm5.33 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515243600
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

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: $2,747 USD|Low: $2,232 USD|High: $4,987 USD|Avg: $2,970 USD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$2,305 USD
Retailer 5$2,335 USD
Retailer 9$2,354 USD
Retailer 2$2,669 USD
Retailer 1$2,747 USD
Retailer 4$3,011 USD
Retailer 10$3,156 USD
Retailer 3$3,301 USD
Retailer 7$3,462 USD
Retailer 6$4,934 USD

34 data points across 10 retailers

21 retailers$2,305 USD to $5,888 USD

B+
Cheapest Retailer
-
$2,305 USD
B+
Retailer 2
-
$2,305 USD
View
B+
Retailer 3
-
$2,335 USD
View
B+
Retailer 4
-
$2,354 USD
View
B+
Retailer 5
-
$2,354 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,461 USD
View
B
Retailer 7
-
$2,552 USD
View
B
Retailer 8
-
$2,552 USD
View
B+
Retailer 9
-
$2,669 USD
View
B+
Retailer 10
-
$2,722 USD
A$4,188 AUD
View
B+
Retailer 11
-
$2,747 USD
£2,163 GBP
View
B
Retailer 12
-
$2,851 USD
View
B
Retailer 13
-
$2,944 USD
View
B
Retailer 14
-
$3,000 USD
View
B
Retailer 15
-
$3,011 USD
£2,371 GBP
View
Retailer 16
-
$3,156 USD
A$4,855 AUD
View
Price last confirmed 26 days ago
B
Retailer 17
-
$3,210 USD
View
B
Retailer 18
-
$3,301 USD
€3,144 EUR
View
B
Retailer 19
-
$3,462 USD
ZAR 55,927 ZAR
View
B
Retailer 20
-
$4,934 USD
£3,885 GBP
View
Most Expensive
B
NZ Jewellers
76458eb6-69a0-4a20-85c4-dab2693a0be1 · Oct 30
$5,888 USD
View
20 more retailers have this diamond
Prices start from $2,305 USDSave up to $3,583 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
$2,305 USD