CaratHunter
Plans
Round|Natural|GIA

2.50ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2146621603

Certificate GIA 2146621603

Diamond specifications and retailer prices

From $55,297 AUD
$38,843 USD
As of October 30, 2026
Save $20,276 AUD (27%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $100,266 AUD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2146621603. Listed at 12 retailers as of October 29, 2026, with a 37% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2146621603
Dimensions8.65 × 8.59 × 5.40 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.65 mm8.59 mm2.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2146621603
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $59,517 AUD|Low: $54,823 AUD|High: $75,573 AUD|Avg: $62,199 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 3$54,823 AUD
Retailer 4$55,297 AUD
Retailer 1$59,517 AUD
Retailer 2$75,573 AUD

45 data points across 4 retailers

12 retailers$55,297 AUD to $75,573 AUD

Retailer 1
-
$54,823 AUD
$38,510 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$55,297 AUD
$38,843 USD
View
B+
Retailer 3
-
$58,534 AUD
$41,117 USD
View
B+
Retailer 4
-
$58,706 AUD
$41,238 USD
View
B+
Retailer 5
-
$59,517 AUD
₹3,981,640 INR
View
B
Retailer 6
-
$60,011 AUD
CA$58,548 CAD
View
B
Retailer 7
-
$66,653 AUD
$46,820 USD
View
B
Retailer 8
-
$66,653 AUD
$46,820 USD
View
B
Retailer 9
-
$68,874 AUD
$48,380 USD
View
B
Retailer 10
-
$75,065 AUD
$52,729 USD
View
B
Retailer 11
-
$75,573 AUD
€50,558 EUR
View
Most Expensive
Diamond Quarter
2.5SI1E2103A4A3N · Oct 31
$100,266 AUD
£55,458 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $55,297 AUDSave up to $20,276 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+
2.50ct Round
$55,297 AUD