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Radiant|Natural|GIA

1.26ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 2151322920

Certificate GIA 2151322920

Diamond specifications and retailer prices

From $6,688 AUD
As of November 1, 2026
Save $5,591 AUD (46%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $12,279 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.26ct natural radiant diamond

This 1.26ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2151322920. Listed at 6 retailers as of November 1, 2026, with prices from $6,688 to $12,279, a $5,591 spread on the same certified stone. MOH London lists it at $12,279. 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

1.26
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2151322920
Dimensions6.06 × 6.03 × 4.17 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
Additional clouds are not shown.
Top View
6.06 mm6.03 mm1.26 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2151322920
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.2%

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 1
Current: $12,279 AUD|Low: $6,688 AUD|High: $12,460 AUD|Avg: $8,871 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 5$6,688 AUD
Retailer 3$7,702 AUD
Retailer 2$8,072 AUD
Retailer 4$9,080 AUD
Retailer 6$9,220 AUD
MOH London$12,279 AUD

43 data points across 6 retailers

6 retailers$6,688 AUD to $12,279 AUD

B+
Cheapest Retailer
-
$6,688 AUD
B+
Retailer 2
-
$7,702 AUD
View
B+
Retailer 3
-
$8,072 AUD
View
B
Retailer 4
-
$9,080 AUD
View
Retailer 5
-
$9,220 AUD
View
Price last confirmed 15 days ago
Most Expensive
B
MOH London
1081D087A · Nov 4
$12,279 AUD
£6,643 GBP
View
5 more retailers have this diamond
Prices start from $6,688 AUDSave up to $5,591 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+
1.26ct Radiant
$6,688 AUD