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Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 1236910234

Certificate GIA 1236910234

Diamond specifications and retailer prices

From $4,068 AUD
As of November 5, 2026
Save $3,756 AUD (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,824 AUD at NZ Jewellers · As of November 5, 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 D 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 1236910234. Listed at 13 retailers as of November 5, 2026, with prices from $4,068 to $7,824, a $3,756 spread on the same certified stone. NZ Jewellers lists it at $7,824. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236910234
Dimensions6.98 × 5.20 × 3.54 mm
L/W Ratio1.34
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Pinpoint
Top View
6.98 mm5.20 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236910234
Side View
Table 67.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.0%

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 5
Current: $7,824 AUD|Low: $3,644 AUD|High: $7,824 AUD|Avg: $5,156 AUD|+1.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 6$3,644 AUD
Retailer 15$4,068 AUD
Retailer 17$4,068 AUD
Retailer 16$4,225 AUD
Retailer 7$4,293 AUD
Retailer 2$4,356 AUD
Retailer 18$4,403 AUD
Retailer 3$4,643 AUD
Retailer 4$4,643 AUD
Retailer 14$4,694 AUD
Retailer 5$4,788 AUD
Retailer 8$5,025 AUD
Retailer 11$5,226 AUD
Retailer 9$5,269 AUD
Retailer 12$5,481 AUD
Retailer 10$6,324 AUD
Retailer 13$7,489 AUD
NZ Jewellers$7,824 AUD

28 data points across 18 retailers

13 retailers$4,068 AUD to $7,824 AUD

A
Cheapest Retailer
-
$4,068 AUD
A
Retailer 2
-
$4,225 AUD
View
A
Retailer 3
-
$4,293 AUD
View
A
Retailer 4
-
$4,356 AUD
View
A
Retailer 5
-
$4,403 AUD
View
A
Retailer 6
-
$4,643 AUD
View
A
Retailer 7
-
$4,643 AUD
View
A
Retailer 8
-
$4,694 AUD
View
B+
Retailer 9
-
$4,788 AUD
View
B+
Retailer 10
-
$5,226 AUD
View
B+
Retailer 11
-
$5,481 AUD
View
B
Retailer 12
-
$7,489 AUD
View
Most Expensive
B
NZ Jewellers
d9f58977-f502-40ff-a920-afa2aec6d910 · Nov 5
$7,824 AUD
$5,376 USD
View
12 more retailers have this diamond
Prices start from $4,068 AUDSave up to $3,756 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
1.20ct Radiant
$4,068 AUD