Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 5553693574

Certificate GIA 5553693574

Diamond specifications and retailer prices

From $2,575 USD
As of November 6, 2026
Save $2,935 USD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,510 USD at NZ Jewellers · As of November 5, 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 5553693574. Listed at 20 retailers as of November 5, 2026, with prices from $2,575 to $5,510, a $2,935 spread on the same certified stone. NZ Jewellers lists it at $5,510. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553693574
Dimensions7.44 × 5.28 × 3.59 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.44 mm5.28 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5553693574
Side View
Table 68.0%CrownGirdle: STK-STKPavilionCulet: NoneDepth 68.0%

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 6
Current: $5,510 USD|Low: $2,313 USD|High: $5,520 USD|Avg: $3,144 USD|-0.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 11$2,383 USD
Retailer 9$2,575 USD
Retailer 19$2,595 USD
Retailer 6$2,711 USD
Retailer 10$2,723 USD
Retailer 2$2,805 USD
Retailer 3$2,865 USD
Retailer 5$2,865 USD
Retailer 4$2,976 USD
Retailer 13$3,068 USD
Retailer 18$3,113 USD
Retailer 14$3,230 USD
Retailer 12$3,272 USD
Retailer 7$3,306 USD
Retailer 8$3,535 USD
Retailer 15$3,682 USD
Retailer 16$3,860 USD
Retailer 17$5,275 USD
NZ Jewellers$5,510 USD

24 data points across 19 retailers

20 retailers$2,575 USD to $5,510 USD

B+
Cheapest Retailer
-
$2,575 USD
Retailer 2
-
$2,582 USD
View
Price last confirmed 22 days ago
Retailer 3
-
$2,582 USD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
$2,595 USD
View
B+
Retailer 5
-
$2,711 USD
View
Retailer 6
-
$2,723 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
$2,805 USD
View
B+
Retailer 8
-
$2,865 USD
View
B+
Retailer 9
-
$2,976 USD
View
Retailer 10
-
$3,023 USD
View
Price last confirmed 31 days ago
B
Retailer 11
-
$3,068 USD
View
B
Retailer 12
-
$3,113 USD
View
B+
Retailer 13
-
$3,230 USD
View
B
Retailer 14
-
$3,272 USD
View
B
Retailer 15
-
$3,306 USD
View
B
Retailer 16
-
$3,535 USD
View
B
Retailer 17
-
$3,682 USD
View
B
Retailer 18
-
$3,860 USD
View
B
Retailer 19
-
$5,275 USD
View
Most Expensive
B
NZ Jewellers
ffc4360b-9be8-481a-9984-68ecb1bbfab8 · Nov 5
$5,510 USD
View
19 more retailers have this diamond
Prices start from $2,575 USDSave up to $2,935 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
$2,575 USD