CaratHunter
Plans
Radiant|Natural|GIA

1.21ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 5553821034

Certificate GIA 5553821034

Diamond specifications and retailer prices

From $3,769 AUD
As of November 4, 2026
Save $3,922 AUD (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,692 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553821034. Listed at 13 retailers as of November 4, 2026, with prices from $3,769 to $7,692, a $3,922 spread on the same certified stone. NZ Jewellers lists it at $7,692. 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

1.21
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553821034
Dimensions6.98 × 5.30 × 3.63 mm
L/W Ratio1.32
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
6.98 mm5.30 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553821034
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

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 4
Current: $7,692 AUD|Low: $3,769 AUD|High: $7,751 AUD|Avg: $4,950 AUD
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
November 7, 2026
Retailer 4$3,769 AUD
Retailer 13$3,953 AUD
Retailer 5$4,075 AUD
Retailer 8$4,341 AUD
Retailer 10$4,414 AUD
Retailer 12$4,414 AUD
Retailer 6$4,585 AUD
Retailer 7$4,673 AUD
Retailer 3$4,833 AUD
Retailer 9$4,842 AUD
Retailer 11$5,094 AUD
Retailer 2$7,342 AUD
NZ Jewellers$7,692 AUD

29 data points across 13 retailers

13 retailers$3,769 AUD to $7,692 AUD

A
Cheapest Retailer
-
$3,769 AUD
B+
Retailer 2
-
$3,953 AUD
View
B+
Retailer 3
-
$4,075 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,341 AUD
View
Retailer 5
-
$4,414 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$4,414 AUD
View
B+
Retailer 7
-
$4,585 AUD
View
B+
Retailer 8
-
$4,673 AUD
View
B
Retailer 9
-
$4,833 AUD
View
B+
Retailer 10
-
$4,842 AUD
View
B+
Retailer 11
-
$5,094 AUD
View
Retailer 12
-
$7,342 AUD
View
Most Expensive
B
NZ Jewellers
b4174110-3705-4efe-92d9-c6361fdc8e45 · Nov 5
$7,692 AUD
$5,285 USD
View
12 more retailers have this diamond
Prices start from $3,769 AUDSave up to $3,922 AUD

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
1.21ct Radiant
$3,769 AUD