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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 £18,424 GBP
$24,535 USD
As of October 30, 2026
Save £13,821 GBP (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £32,245 GBP 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 £18,424 to £32,245, a £13,821 spread on the same certified stone. Diamond Quarter lists it at £32,245. 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: £22,065 GBP|Low: £18,424 GBP|High: £31,986 GBP|Avg: £22,869 GBP|-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£18,424 GBP
Retailer 9£19,005 GBP
Retailer 7£19,689 GBP
Retailer 6£20,368 GBP
Retailer 2£20,421 GBP
Retailer 1£22,065 GBP
Retailer 3£24,529 GBP
Retailer 5£27,834 GBP
Retailer 4£31,774 GBP

41 data points across 9 retailers

14 retailers£18,424 GBP to £32,245 GBP

A
Cheapest Retailer
-
£18,424 GBP
$24,535 USD
A
Retailer 2
-
£19,005 GBP
$25,309 USD
View
A
Retailer 3
-
£19,689 GBP
$26,220 USD
View
Retailer 4
-
£20,368 GBP
A$41,730 AUD
View
Price last confirmed 28 days ago
A
Retailer 5
-
£20,421 GBP
View
Retailer 6
-
£21,079 GBP
$28,071 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£21,248 GBP
$28,296 USD
View
Price last confirmed 30 days ago
Retailer 8
-
£21,923 GBP
$29,194 USD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
£22,065 GBP
View
Retailer 10
-
£22,766 GBP
$30,317 USD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
£24,529 GBP
€31,109 EUR
View
B+
Retailer 12
-
£27,834 GBP
ZAR 598,796 ZAR
View
B
Retailer 13
-
£31,774 GBP
View
Most Expensive
B
Diamond Quarter
2.5SI1D638413FDN · Oct 29
£32,245 GBP
View
13 more retailers have this diamond
Prices start from £18,424 GBPSave up to £13,821 GBP

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
£18,424 GBP