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Round|Natural|GIA

2.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5231668055

Certificate GIA 5231668055

Diamond specifications and retailer prices

From $41,394 AUD
$29,077 USD
As of October 30, 2026
Save $31,162 AUD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $72,556 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct 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 5231668055. Listed at 15 retailers as of October 29, 2026, with prices from $41,394 to $72,556, a $31,162 spread on the same certified stone. MOH London lists it at $72,556. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231668055
Dimensions8.54 × 8.65 × 5.39 mm
L/W Ratio1.01
Top View
8.54 mm8.65 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231668055
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.8%

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: $72,556 AUD|Low: $41,394 AUD|High: $73,038 AUD|Avg: $51,589 AUD|-0.7%
MOH London
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
October 30, 2026
Retailer 4$41,394 AUD
Retailer 5$42,072 AUD
Retailer 3$44,886 AUD
Retailer 13$46,141 AUD
Retailer 7$46,179 AUD
Retailer 9$46,649 AUD
Retailer 6$49,409 AUD
Retailer 14$50,061 AUD
Retailer 10$53,858 AUD
Retailer 2$54,802 AUD
Retailer 12$55,062 AUD
Retailer 11$57,847 AUD
Retailer 8$63,559 AUD
MOH London$72,556 AUD

31 data points across 14 retailers

15 retailers$41,394 AUD to $72,556 AUD

B+
Cheapest Retailer
-
$41,394 AUD
$29,077 USD
B+
Retailer 2
-
$42,072 AUD
$29,553 USD
View
B+
Retailer 3
-
$44,886 AUD
$31,530 USD
View
Retailer 4
-
$46,141 AUD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$46,179 AUD
£25,542 GBP
View
B+
Retailer 6
-
$46,210 AUD
$32,460 USD
View
B+
Retailer 7
-
$46,649 AUD
CA$45,511 CAD
View
B+
Retailer 8
-
$49,409 AUD
$34,707 USD
View
B
Retailer 9
-
$50,061 AUD
$35,165 USD
View
B+
Retailer 10
-
$53,858 AUD
$37,832 USD
View
B+
Retailer 11
-
$54,802 AUD
€36,662 EUR
View
B+
Retailer 12
-
$55,062 AUD
$38,678 USD
View
B
Retailer 13
-
$57,847 AUD
$40,634 USD
View
B
Retailer 14
-
$63,559 AUD
ZAR 721,270 ZAR
View
Most Expensive
B
MOH London
03B2ED617 · Oct 29
$72,556 AUD
£40,131 GBP
View
14 more retailers have this diamond
Prices start from $41,394 AUDSave up to $31,162 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
$41,394 AUD