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Round|Natural|GIA

2.05ct D SI1 Round Natural Diamond

ID • D/SI1 • GIA 39

Certificate GIA 39

Diamond specifications and retailer prices

From $39,782 AUD
As of November 6, 2026
Save $6,761 AUD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $51,852 AUD at Aurelinne · As of September 6, 2026
View at Aurelinne

About this 2.05ct natural round diamond

This 2.05ct natural round sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 5 retailers as of November 5, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

2.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 39
Dimensions8.07 × 8.11 × 5.04 mm
L/W Ratio1.00
Top View
8.07 mm8.11 mm2.05 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 39
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $51,852 AUD|Low: $39,389 AUD|High: $51,852 AUD|Avg: $45,326 AUD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 2$39,782 AUD
Retailer 6$42,809 AUD
Retailer 4$46,089 AUD
Retailer 5$46,543 AUD
Retailer 3$49,930 AUD
Aurelinne$51,852 AUD

5 data points across 6 retailers

5 retailers$39,782 AUD to $46,543 AUD

B
Cheapest Retailer
-
$39,782 AUD
B
Retailer 2
-
$42,809 AUD
View
B
Retailer 3
-
$46,543 AUD
View
Retailer 4
-
$49,930 AUD
View
Price last confirmed 60 days ago
Most Expensive
Aurelinne
40a2f7f4-ead5-4c61-a4c6-368c2e228d6c · Sep 6
$51,852 AUD
$36,298 USD
View
Price last confirmed 61 days ago
4 more retailers have this diamond
Prices start from $39,782 AUDSave up to $6,761 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
2.05ct Round
$39,782 AUD