Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 5546336555

Certificate GIA 5546336555

Diamond specifications and retailer prices

From $1,869 USD
HK$14,600 HKD
As of November 1, 2026
Save $2,428 USD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,156 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 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 5546336555. Listed at 20 retailers as of November 1, 2026, with a 130% 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
I
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546336555
Dimensions6.87 × 5.41 × 3.89 mm
L/W Ratio1.27
Top View
6.87 mm5.41 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546336555
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.9%

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: $4,296 USD|Low: $1,856 USD|High: $4,374 USD|Avg: $2,670 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11$1,869 USD
Retailer 6$1,963 USD
Retailer 2$2,184 USD
Retailer 9$2,263 USD
Retailer 7$2,593 USD
Retailer 3$2,604 USD
Retailer 10$2,621 USD
Retailer 5$2,670 USD
Retailer 12$3,032 USD
Retailer 4$3,054 USD
Retailer 8$3,063 USD
Retailer 1$4,296 USD

31 data points across 12 retailers

20 retailers$1,869 USD to $4,296 USD

A
Cheapest Retailer
-
$1,869 USD
HK$14,600 HKD
A
Retailer 2
-
$1,963 USD
₹186,919 INR
View
A
Retailer 3
-
$2,184 USD
SGD 2,952 SGD
View
A
Retailer 4
-
$2,263 USD
View
Final sale: no returns
A
Retailer 5
-
$2,332 USD
View
A
Retailer 6
-
$2,335 USD
View
Retailer 7
-
$2,466 USD
View
Price last confirmed 15 days ago
Retailer 8
-
$2,466 USD
View
Price last confirmed 17 days ago
B+
Retailer 9
-
$2,579 USD
A$3,968 AUD
View
Retailer 10
-
$2,580 USD
View
Price last confirmed 17 days ago
B+
Retailer 11
-
$2,593 USD
View
B+
Retailer 12
-
$2,604 USD
SGD 3,519 SGD
View
B+
Retailer 13
-
$2,621 USD
£2,064 GBP
View
B+
Retailer 14
-
$2,670 USD
View
Retailer 15
-
$2,846 USD
View
Price last confirmed 14 days ago
B+
Retailer 16
-
$3,032 USD
ZAR 48,977 ZAR
View
Retailer 17
-
$3,054 USD
A$4,698 AUD
View
Price last confirmed 26 days ago
B+
Retailer 18
-
$3,063 USD
€2,917 EUR
View
B
Retailer 19
-
$4,296 USD
£3,383 GBP
View
Most Expensive
NZ Jewellers
c0e566b7-b3ad-47b4-b208-21f20e29ae78 · Oct 17
$5,156 USD
View
Price last confirmed 15 days ago
19 more retailers have this diamond
Prices start from $1,869 USDSave up to $2,428 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
$1,869 USD