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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 3515698616

Certificate GIA 3515698616

Diamond specifications and retailer prices

From $6,078 AUD
As of November 5, 2026
Save $6,789 AUD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,867 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 F 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 3515698616. Listed at 19 retailers as of November 5, 2026, with prices from $6,078 to $12,867, a $6,789 spread on the same certified stone. NZ Jewellers lists it at $12,867. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle32.8°
OriginNatural
Grading LabGIA
CertificateGIA 3515698616
Dimensions7.18 × 5.31 × 3.52 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.18 mm5.31 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515698616
Side View
Table 67.0%CrownGirdle: STK-THKPavilion 32.8°Culet: NDepth 66.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $12,867 AUD|Low: $6,487 AUD|High: $12,867 AUD|Avg: $8,443 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 3$6,487 AUD
Retailer 5$6,571 AUD
Retailer 4$6,970 AUD
Retailer 12$6,970 AUD
Retailer 13$6,970 AUD
Retailer 8$7,603 AUD
Retailer 11$7,756 AUD
Retailer 6$8,185 AUD
Retailer 9$8,658 AUD
Retailer 10$9,386 AUD
Retailer 2$9,623 AUD
Retailer 7$12,188 AUD
NZ Jewellers$12,867 AUD

45 data points across 13 retailers

19 retailers$6,078 AUD to $12,867 AUD

B+
Cheapest Retailer
-
$6,078 AUD
B
Retailer 2
-
$6,487 AUD
View
B
Retailer 3
-
$6,571 AUD
View
B
Retailer 4
-
$6,583 AUD
View
B
Retailer 5
-
$6,970 AUD
View
B
Retailer 6
-
$6,970 AUD
View
Retailer 7
-
$6,970 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$7,594 AUD
View
B
Retailer 9
-
$7,603 AUD
View
Retailer 10
-
$7,756 AUD
View
Price last confirmed 29 days ago
B
Retailer 11
-
$8,043 AUD
View
Retailer 12
-
$8,185 AUD
View
Retailer 13
-
$8,491 AUD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$8,658 AUD
View
B
Retailer 15
-
$8,683 AUD
View
B
Retailer 16
-
$9,386 AUD
View
Retailer 17
-
$9,623 AUD
View
B
Retailer 18
-
$12,188 AUD
View
Most Expensive
B
NZ Jewellers
e84a75b7-a070-4130-8530-22d294cb9c05 · Nov 5
$12,867 AUD
$8,841 USD
View
18 more retailers have this diamond
Prices start from $6,078 AUDSave up to $6,789 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
$6,078 AUD