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Oval|Natural|GIA

2.50ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1509971295

Certificate GIA 1509971295

Diamond specifications and retailer prices

From £18,397 GBP
HK$191,400 HKD
As of October 29, 2026
Save £15,532 GBP (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £33,929 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural oval diamond

This 2.5ct natural oval sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1509971295. Listed at 18 retailers as of October 29, 2026, with prices from £18,397 to £33,929, a £15,532 spread on the same certified stone. MOH London lists it at £33,929. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1509971295
Dimensions10.93 × 7.53 × 4.80 mm
L/W Ratio1.45
Girdle conditionFaceted
Cert comments
Additional pinpoints are not shown.
Key to symbols
Feather, Crystal, Pinpoint
Top View
10.93 mm7.53 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1509971295
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.7%

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 29
Current: £33,929 GBP|Low: £21,536 GBP|High: £34,205 GBP|Avg: £24,962 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 9£21,717 GBP
Retailer 7£21,762 GBP
Retailer 10£21,864 GBP
Retailer 4£21,981 GBP
Retailer 8£23,174 GBP
Retailer 11£23,610 GBP
Retailer 2£23,906 GBP
Retailer 5£26,178 GBP
Retailer 3£26,549 GBP
Retailer 6£29,722 GBP
MOH London£33,929 GBP

35 data points across 11 retailers

18 retailers£18,397 GBP to £33,929 GBP

A
Cheapest Retailer
-
£18,397 GBP
HK$191,400 HKD
Retailer 2
-
£20,287 GBP
SGD 36,508 SGD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
£21,717 GBP
$28,920 USD
View
Retailer 4
-
£21,762 GBP
A$44,585 AUD
View
Price last confirmed 26 days ago
B+
Retailer 5
-
£21,864 GBP
$29,116 USD
View
Final sale: no returns
B+
Retailer 6
-
£21,981 GBP
View
B+
Retailer 7
-
£22,510 GBP
$29,976 USD
View
B+
Retailer 8
-
£23,174 GBP
$30,860 USD
View
B+
Retailer 9
-
£23,610 GBP
$31,441 USD
View
B+
Retailer 10
-
£23,853 GBP
$31,764 USD
View
B+
Retailer 11
-
£23,906 GBP
View
B
Retailer 12
-
£25,045 GBP
$33,352 USD
View
B
Retailer 13
-
£25,840 GBP
$34,411 USD
View
B+
Retailer 14
-
£26,178 GBP
€33,201 EUR
View
B+
Retailer 15
-
£26,549 GBP
$35,355 USD
View
B
Retailer 16
-
£26,834 GBP
$35,734 USD
View
B
Retailer 17
-
£29,722 GBP
ZAR 639,420 ZAR
View
Most Expensive
B
MOH London
2F3821C54 · Oct 29
£33,929 GBP
View
17 more retailers have this diamond
Prices start from £18,397 GBPSave up to £15,532 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 Oval
£18,397 GBP