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Marquise|Natural|IGI

2.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 799675095

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 799675095

Diamond specifications and retailer prices

From £5,469 GBP
SGD 9,903 SGD
As of October 31, 2026
Save £3,302 GBP (38%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £8,772 GBP at The Diamond Guys · As of November 2, 2026
View at The Diamond Guys

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 799675095. Listed at 7 retailers as of October 31, 2026, with prices from £5,469 to £8,772, a £3,302 spread on the same certified stone. The Diamond Guys lists it at £8,772. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle38.5°
OriginNatural
Grading LabIGI
CertificateIGI 799675095
Dimensions12.93 × 6.99 × 4.45 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
12.93 mm6.99 mm2.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 799675095
Side View
Table 57.0%Crown 40.2°Girdle: STK-THKPavilion 38.5°Culet: 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 31
Current: £7,740 GBP|Low: £5,469 GBP|High: £10,270 GBP|Avg: £7,651 GBP|-12.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
The Diamond Guys
November 2, 2026
Retailer 3£5,469 GBP
Retailer 7£5,550 GBP
Retailer 2£6,404 GBP
Retailer 4£6,518 GBP
Retailer 5£7,500 GBP
Retailer 1£7,740 GBP
Retailer 6£7,912 GBP
The Diamond Guys£8,772 GBP
Retailer 8£10,270 GBP

29 data points across 9 retailers

7 retailers£5,469 GBP to £8,772 GBP

A
Cheapest Retailer
-
£5,469 GBP
SGD 9,903 SGD
A
Retailer 2
-
£6,404 GBP
$8,580 USD
View
A
Retailer 3
-
£6,518 GBP
$8,733 USD
View
A
Retailer 4
-
£7,500 GBP
$10,050 USD
View
A
Retailer 5
-
£7,740 GBP
€9,877 EUR
View
A
Retailer 6
-
£7,912 GBP
$10,602 USD
View
Most Expensive
B+
The Diamond Guys
1959627130 · Nov 2
£8,772 GBP
$11,753 USD
View
6 more retailers have this diamond
Prices start from £5,469 GBPSave up to £3,302 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 Marquise
£5,469 GBP