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Round|Natural|GIA

2.05ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 15

Certificate GIA 15

Diamond specifications and retailer prices

From $22,683 AUD
As of November 6, 2026
Save $5,110 AUD (18%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $29,294 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 I colour (near-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 23% 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 15
Dimensions8.12 × 8.18 × 5.03 mm
L/W Ratio1.01
Top View
8.12 mm8.18 mm2.05 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 15
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.7%

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 6
Current: $29,294 AUD|Low: $22,436 AUD|High: $29,294 AUD|Avg: $26,078 AUD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 2$22,683 AUD
Retailer 6$24,456 AUD
Retailer 3$26,040 AUD
Retailer 5$27,793 AUD
Retailer 4$28,210 AUD
Aurelinne$29,294 AUD

6 data points across 6 retailers

5 retailers$22,683 AUD to $27,793 AUD

B+
Cheapest Retailer
-
$22,683 AUD
B+
Retailer 2
-
$24,456 AUD
View
B
Retailer 3
-
$27,793 AUD
View
Retailer 4
-
$28,210 AUD
View
Price last confirmed 60 days ago
Most Expensive
Aurelinne
cd3146f5-0866-4770-89c1-721418ea4049 · Sep 6
$29,294 AUD
$20,507 USD
View
Price last confirmed 61 days ago
4 more retailers have this diamond
Prices start from $22,683 AUDSave up to $5,110 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
$22,683 AUD