Round|Natural|GIA

2.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1518212262

Certificate GIA 1518212262

Diamond specifications and retailer prices

From $30,221 USD
As of October 29, 2026
Save $25,264 USD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $55,485 USD at Diamond Quarter · As of October 28, 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 1518212262. Listed at 20 retailers as of October 28, 2026, with prices from $30,221 to $55,485, a $25,264 spread on the same certified stone. Diamond Quarter lists it at $55,485. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1518212262
Dimensions8.76 × 8.82 × 5.31 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Cloud, Natural
Top View
8.76 mm8.82 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518212262
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 60.5%

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 29
Current: $36,904 USD|Low: $30,221 USD|High: $53,346 USD|Avg: $37,318 USD|-0.8%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 11$30,221 USD
Retailer 8$30,728 USD
Retailer 10$32,775 USD
Retailer 9$33,459 USD
Retailer 14$33,530 USD
Retailer 4$33,751 USD
Retailer 16$34,078 USD
Retailer 3$35,157 USD
Retailer 17$35,439 USD
Retailer 2$36,089 USD
Retailer 6$36,564 USD
Retailer 1$36,904 USD
Retailer 7$37,970 USD
Retailer 18$39,345 USD
Retailer 13$39,970 USD
Retailer 5$40,225 USD
Retailer 19$42,260 USD
Retailer 15$46,422 USD
Retailer 12$52,993 USD

27 data points across 19 retailers

20 retailers$30,221 USD to $55,485 USD

B+
Cheapest Retailer
-
$30,221 USD
B+
Retailer 2
-
$30,728 USD
View
B+
Retailer 3
-
$32,775 USD
View
B+
Retailer 4
-
$33,459 USD
A$51,476 AUD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
$33,530 USD
£26,401 GBP
View
B+
Retailer 6
-
$33,751 USD
View
B+
Retailer 7
-
$34,078 USD
CA$47,331 CAD
View
B+
Retailer 8
-
$35,157 USD
View
B+
Retailer 9
-
$35,439 USD
View
B
Retailer 10
-
$36,089 USD
View
B
Retailer 11
-
$36,564 USD
View
B+
Retailer 12
-
$36,904 USD
£29,058 GBP
View
B+
Retailer 13
-
$37,970 USD
View
B+
Retailer 14
-
$39,345 USD
View
B+
Retailer 15
-
$39,970 USD
€38,067 EUR
View
B+
Retailer 16
-
$40,225 USD
View
B
Retailer 17
-
$42,260 USD
View
B
Retailer 18
-
$46,422 USD
ZAR 749,958 ZAR
View
B
Retailer 19
-
$52,993 USD
£41,727 GBP
View
Most Expensive
B
Diamond Quarter
2.5SI1D1562EF73N · Oct 28
$55,485 USD
£43,689 GBP
View
19 more retailers have this diamond
Prices start from $30,221 USDSave up to $25,264 USD

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
$30,221 USD