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Marquise|Natural|IGI

2.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 779663216

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 779663216

Diamond specifications and retailer prices

From £7,501 GBP
$10,050 USD
As of November 1, 2026
Save £3,154 GBP (30%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £10,655 GBP at The Diamond Guys · As of November 2, 2026
View at The Diamond Guys

About this 2.51ct natural marquise diamond

This 2.51ct 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 779663216. Listed at 6 retailers as of November 1, 2026, with prices from £7,501 to £10,655, a £3,154 spread on the same certified stone. The Diamond Guys lists it at £10,655. 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

2.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.1°
Pavilion angle40°
OriginNatural
Grading LabIGI
CertificateIGI 779663216
Dimensions14.13 × 6.95 × 4.18 mm
L/W Ratio2.03
Girdle conditionFaceted
Culet sizePointed
Top View
14.13 mm6.95 mm2.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 779663216
Side View
Table 63.0%Crown 40.1°Girdle: MED-THKPavilion 40°Culet: NoneDepth 60.1%

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: Nov 1
Current: £8,797 GBP|Low: £6,741 GBP|High: £12,435 GBP|Avg: £9,350 GBP|-18.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
November 2, 2026
Retailer 6£6,741 GBP
Retailer 3£7,501 GBP
Retailer 2£7,613 GBP
Retailer 5£8,780 GBP
Retailer 1£8,797 GBP
Retailer 4£9,250 GBP
The Diamond Guys£10,655 GBP
Retailer 7£12,435 GBP

32 data points across 8 retailers

6 retailers£7,501 GBP to £10,655 GBP

A
Cheapest Retailer
-
£7,501 GBP
$10,050 USD
A
Retailer 2
-
£7,613 GBP
$10,200 USD
View
A
Retailer 3
-
£8,780 GBP
$11,764 USD
View
A
Retailer 4
-
£8,797 GBP
€11,226 EUR
View
A
Retailer 5
-
£9,250 GBP
$12,394 USD
View
Most Expensive
B+
The Diamond Guys
1955283683 · Nov 2
£10,655 GBP
$14,276 USD
View
5 more retailers have this diamond
Prices start from £7,501 GBPSave up to £3,154 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
2.51ct Marquise
£7,501 GBP