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Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2527034998

Certificate GIA 2527034998

Diamond specifications and retailer prices

From $6,523 AUD
As of November 4, 2026
Save $5,989 AUD (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,512 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2527034998. Listed at 13 retailers as of November 4, 2026, with prices from $6,523 to $12,512, a $5,989 spread on the same certified stone. NZ Jewellers lists it at $12,512. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.56°
Pavilion angle30.52°
OriginNatural
Grading LabGIA
CertificateGIA 2527034998
Dimensions7.03 × 5.18 × 3.54 mm
L/W Ratio1.36
Girdle conditionThick
Key to symbols
Crystal, Feather
Top View
7.03 mm5.18 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527034998
Side View
Table 63.0%Crown 43.56°GirdlePavilion 30.52°CuletDepth 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 4
Current: $12,512 AUD|Low: $6,330 AUD|High: $12,512 AUD|Avg: $8,446 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
Retailer 14
November 6, 2026
Retailer 11$6,523 AUD
Retailer 5$6,727 AUD
Retailer 10$6,904 AUD
Retailer 2$7,257 AUD
Retailer 3$7,481 AUD
Retailer 13$7,481 AUD
Retailer 14$7,481 AUD
Retailer 12$7,540 AUD
Retailer 7$8,418 AUD
Retailer 6$8,565 AUD
Retailer 4$8,632 AUD
Retailer 8$9,127 AUD
Retailer 9$11,882 AUD
NZ Jewellers$12,512 AUD

36 data points across 14 retailers

13 retailers$6,523 AUD to $12,512 AUD

B+
Cheapest Retailer
-
$6,523 AUD
B+
Retailer 2
-
$6,727 AUD
View
B
Retailer 3
-
$6,904 AUD
View
Final sale: no returns
B
Retailer 4
-
$7,030 AUD
View
B+
Retailer 5
-
$7,257 AUD
View
B
Retailer 6
-
$7,481 AUD
View
B
Retailer 7
-
$7,481 AUD
View
Retailer 8
-
$7,540 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
$8,418 AUD
View
B
Retailer 10
-
$8,632 AUD
View
B
Retailer 11
-
$9,127 AUD
View
B
Retailer 12
-
$11,882 AUD
View
Most Expensive
B
NZ Jewellers
a9aa4bc4-7d42-4326-8662-e0689a919691 · Nov 5
$12,512 AUD
$8,597 USD
View
12 more retailers have this diamond
Prices start from $6,523 AUDSave up to $5,989 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.

B+
1.21ct Radiant
$6,523 AUD