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Round|Natural|GIA

2.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6375087784

Certificate GIA 6375087784

Diamond specifications and retailer prices

From $34,928 AUD
$24,535 USD
As of October 30, 2026
Save $26,202 AUD (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $61,130 AUD at Diamond Quarter · As of October 29, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6375087784. Listed at 14 retailers as of October 29, 2026, with prices from $34,928 to $61,130, a $26,202 spread on the same certified stone. Diamond Quarter lists it at $61,130. 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
SymmetryExcellent
FluorescenceStrong
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6375087784
Dimensions8.71 × 8.75 × 5.36 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
8.71 mm8.75 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6375087784
Side View
Table 60.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.4%

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: Oct 30
Current: $41,831 AUD|Low: $34,928 AUD|High: $60,638 AUD|Avg: $43,354 AUD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 8$34,928 AUD
Retailer 9$36,030 AUD
Retailer 7$37,327 AUD
Retailer 6$38,614 AUD
Retailer 2$38,713 AUD
Retailer 1$41,831 AUD
Retailer 3$46,501 AUD
Retailer 5$52,766 AUD
Retailer 4$60,236 AUD

40 data points across 9 retailers

14 retailers$34,928 AUD to $61,130 AUD

A
Cheapest Retailer
-
$34,928 AUD
$24,535 USD
A
Retailer 2
-
$36,030 AUD
$25,309 USD
View
A
Retailer 3
-
$37,327 AUD
$26,220 USD
View
Retailer 4
-
$38,614 AUD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$38,713 AUD
£21,413 GBP
View
Retailer 6
-
$39,962 AUD
$28,071 USD
View
Price last confirmed 33 days ago
Retailer 7
-
$40,282 AUD
$28,296 USD
View
Price last confirmed 31 days ago
Retailer 8
-
$41,561 AUD
$29,194 USD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$41,831 AUD
£23,137 GBP
View
Retailer 10
-
$43,159 AUD
$30,317 USD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
$46,501 AUD
€31,109 EUR
View
B+
Retailer 12
-
$52,766 AUD
ZAR 598,796 ZAR
View
B
Retailer 13
-
$60,236 AUD
£33,317 GBP
View
Most Expensive
B
Diamond Quarter
2.5SI1D638413FDN · Oct 29
$61,130 AUD
£33,812 GBP
View
13 more retailers have this diamond
Prices start from $34,928 AUDSave up to $26,202 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
2.50ct Round
$34,928 AUD